opensvcdecoder-support — Open SVC Decoder support

[Opensvcdecoder-support] SVC

[Thejaswini P <the...@gm...>]

Dear all,


   I am trying to decode the SVC bitstream obtained by using the JSVM
encoder.
There seems to be a problem. I get an error saying "The layer is using a
different scan order".
Kindly advice.
Thank you.


-- 
regards,
thejaswini purushotham

[Opensvcdecoder-support] May I ask a question on how to calcuate the numbers in PC.c and arbitrary spatial ratio?

[Jun Xu <jon...@gm...>]

Dear Sir,

The opensvc is a great work. Thanks for your work, May I get some guidance
from you?

I only interested in the SVC decoder in libs folder so far. I note that in
PC.c file, there are lots of numbers in data structure definition.  I think
it is just for specific resolution.e.g.
short
decoder_svc_Nal_Compute_slice_layer_in_scalable_ext_20_Decode_IPB_svc_Decode_B_svc_Upsampling_tmp[2088960];

Could you please let me know how to calcualte these numbers for other
resolutions e.g.720p and D1 . How about define macros to make it more
general to different resolutions?


I note that the demo is for spatial ratio of 2. How about the performace of
arbitrary spatial ratio?
In void get_base_P_non_dyadic()  in line 93 of motion_vector_svc.c
There are comments:
//TODO with the scale factor

What is its meaning?  The base layer MV is not scaled for the enhancement
layer?


Sorry to bother you and look forward to your reply.

Thanks and best regards,
Jones

Re: [Opensvcdecoder-support] Open SVC Decoder

[M. R. <mr...@in...>]

Hi,

Well, we are missing a lot information in your email.
Which executable are you talking about? Mplayer? Tcpmp? the standalone library?
You may have to read the following page to have your answer: http://sourceforge.net/apps/mediawiki/opensvcdecoder/index.php?title=Installation.

Best regards,
Mickaël

Le 9 juil. 2010 à 00:44, Thejaswini P a écrit :

> I was able to build the project and get the exe for the OpenSVC decoder.
> I dont know how to proceed. Could someone kindly guide me on this..
> 
> Thank you.
> 
> 
> -- 
> regards,
> thejaswini purushotham
> ------------------------------------------------------------------------------
> This SF.net email is sponsored by Sprint
> What will you do first with EVO, the first 4G phone?
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[Opensvcdecoder-support] Open SVC Decoder

[Thejaswini P <the...@gm...>]

I was able to build the project and get the exe for the OpenSVC decoder.
I dont know how to proceed. Could someone kindly guide me on this..

Thank you.


-- 
regards,
thejaswini purushotham

Re: [Opensvcdecoder-support] Problem decoding IDR pictures

[mblestel <med...@in...>]

Dear Selim,

The decoder can detect if there is a different frame between different 
layer.
Using mplayer or TCPMP, the decoder returns a value named "got_picture" 
(for mplayer: h264.c on line 3369) which indicates the type of the 
output frame.
got_picture can have 3 different values
    - 0: no frame to display
    - 1: a frame of the wanted layer is ready to be displayed.
    - 2: a frame with a higher temporal scalability has been detected. 
The frame can belong to a higher enhancement layer, or to the wanted 
layer (when smaller temporal resolution is asked).

In both player, the case with got_picture equals to 2 is treated as no 
frame available to be displayed. That's why the stream is decoded faster.
Modifications have to be done in case of got_picture is equals to 2 in 
order to keep the right frame rate.

I hope this information could help.

Best regards

Médéric





sel...@or... a écrit :
>
> Hello,
>
>  
>
> Thank you for your answer. We are using Mplayer. We will investigate 
> the SEI messages in the coming days.
>
> Concerning the keyboard, it works fine but we need an automatic 
> process. So we will try to find a way how to make the opensvcdecoder 
> aware of a framerate change either with settemporalID or with an SEI 
> message.
>
>  
>
> Best regards,
>
> Selim
>
>  
>
> *De :* Mickaël Raulet [mailto:mr...@gm...] *De la part de* 
> Mickaël Raulet
> *Envoyé :* mercredi 30 juin 2010 18:00
> *À :* ELLOUZE Selim RD-CORE-LAN
> *Cc :* mr...@in...; med...@in...; 
> ope...@li...
> *Objet :* Re: [Opensvcdecoder-support] Problem decoding IDR pictures
>
>  
>
> Hi,
>
>     We noticed that when we change the framerate, the player continues
>     to decode with the initial one and the stream is accelerated or
>     slowed down. We thought that the most efficient way is to inform
>     the decoder about any modification applied to the stream by using
>     an SEI message.
>
>  
>
> which player are you talking about? Mplayer?
>
>  
>
> You might consider to inform the player with SEI messages -- not the 
> decoder -- to use such information. I don't see the case where it is 
> useful in the decoder.
>
>  
>
>     Do you have any knowledge if there is a trick to make the decoder
>     adapt to the new framerate ?
>
> With Mplayer there is a trick using the keyboard. You can find all 
> information here:
>
> http://sourceforge.net/apps/mediawiki/opensvcdecoder/index.php?title=Mplayer#SVC_Features_in_MPlayer.
>
>  
>
> In the decoder API you can use settemporalID to change the decoding 
> framerate.
>
>  
>
> Let us know if it works?
>
>  
>
> Best regards,
>
> Mickaël
>
>  
>
>      
>
>     Regards,
>
>     Selim
>
>      
>
>     *De :* Mickaël Raulet [mailto:mr...@gm...] *De la part
>     de* Mickaël Raulet
>     *Envoyé :* mercredi 30 juin 2010 17:13
>     *À :* ELLOUZE Selim RD-CORE-LAN
>     *Cc :* med...@in...
>     <mailto:med...@in...>; ope...@li...
>     <mailto:ope...@li...>
>     *Objet :* Re: [Opensvcdecoder-support] Problem decoding IDR pictures
>
>      
>
>     Hi selim,
>
>      
>
>     we bypass SEI messages at this stage. It is not normative, just
>     informative in the spec.
>
>      
>
>     Could you tell us why you need them?
>
>      
>
>     Best regards, 
>
>     Mickaël
>
>      
>
>     Le 30 juin 2010 à 17:08, <sel...@or...
>     <mailto:sel...@or...>> a écrit :
>
>
>
>
>     Hello Mederic,
>
>      
>
>     I will try with the value 0 and let you know about the results.
>
>     Concerning the scalability SEI message, do you have an idea if
>     opensvcdecoder supports such messages ? and if we could use it to
>     inform the decoder about a framerate change or any modification of
>     the stream ?
>
>      
>
>     Best regards,
>
>     Selim    
>
>      
>
>     *De :* mblestel [mailto:med...@in...] 
>     *Envoyé :* mercredi 30 juin 2010 09:55
>     *À :* ELLOUZE Selim RD-CORE-LAN
>     *Cc :* ope...@li...
>     <mailto:ope...@li...>
>     *Objet :* Re: [Opensvcdecoder-support] Problem decoding IDR pictures
>
>      
>
>     Hello Selim,
>
>
>     Thank you for testing the decoder.
>
>     Having a look to your cfg files, I point out that you are using
>     MGS Vectors eqauls to 1
>     I think that the problem can come from this option.
>
>     You should try with MGS Vector equals to 0.
>
>     I will try to solve the bug with the MGS Vector option.
>
>     Kind regards
>
>     Médéric
>
>
>
>     sel...@or...
>     <mailto:sel...@or...> a écrit :
>
>     Hello again,
>
>      
>
>     Please find attached 3 streams containing MGS layers:
>
>     DQD : L0Q1 (working)
>
>     DQDQ : L0Q1 + L1Q1 (not working fine)
>
>     DDQ : L1Q1 (not working fine)
>
>      
>
>     If you have any configuration scheme where MGS layers are decoded
>     fine, could you please send it to me that will be of great help.
>
>      
>
>     Otherwise, is the opensvcdecoder capable of handling the SEI
>     messages? Especially the SSEI or the layers not present SEI
>     message. Our intention is to provide such messages when modifying
>     the stream in order to let the player know about the new stream
>     characteristics.
>
>      
>
>     Thankfully,
>
>     Selim
>
>      
>
>      
>
>      
>
>     *De :* mblestel [mailto:med...@in...] 
>     *Envoyé :* mercredi 16 juin 2010 09:16
>     *À :* ELLOUZE Selim RD-CORE-LAN
>     *Cc :* ope...@li...
>     <mailto:ope...@li...>
>     *Objet :* Re: [Opensvcdecoder-support] Problem decoding IDR pictures
>
>      
>
>     Hello Selim,
>
>     I know that I have problems with MGS case, but it depends of the
>     encoding parameters.
>     For example, the decoder is compatible with the following stream
>     (SVCBMT-13.264)  which is part from the conformance testing of the
>     SVC standard.
>     This stream has three layers, DqId equals to 0, 1 or 2.
>
>     I have also several others streams with different configurations
>     in which MGS layers have dependency_id different from 0. And the
>     decoder is able to decode correctly these streams.
>
>     If you can provide me streams and configuration files for the case
>     where OpenSVCDecoder is not compatible with.
>
>     Kind regards
>
>     Médéric
>
>
>
>     sel...@or...
>     <mailto:sel...@or...> a écrit :
>
>     Hello again,
>
>      
>
>     Reporting on MGS case: I have tested some scenarios and I noticed
>     that MGS is fine only with one layer on top of the base layer, i.e
>     L0Q0 -- L0Q1 works. I have also test L0Q0-L0Q1-L1Q0 and it works
>     fine. However these cases are not supported by the OpenSVC Decoder:
>
>     More than one MGS Layer on top of the base layer
>
>     Any MGS layer with L > 0
>
>     That means the only case it works Q=1 and L=0.
>
>     I hope this could help any future work on this issue.
>
>      
>
>     Best regards,
>
>     Selim   
>
>      
>
>     *De :* mblestel [mailto:med...@in...] 
>     *Envoyé :* vendredi 11 juin 2010 17:34
>     *À :* ELLOUZE Selim RD-CORE-LAN
>     *Cc :* ope...@li...
>     <mailto:ope...@li...>; mr...@in...
>     <mailto:mr...@in...>
>     *Objet :* Re: Problem decoding IDR pictures
>
>      
>
>
>     Hello Selim,
>
>     First, thank you for using Open SVC Decoder.
>
>     The problem was due to negative POC, which are authorized in the
>     SVC standard.
>     The modifications can be found under the revision 171 of the SVN
>     repository.
>
>     Concerning constraints in configuration files, Open SVC Decoder is
>     not compatible with MGSVector.
>     These following lines should be removed from configuration files:
>     MGSVectorMode 1
>     MGSVector0 4
>     MGSVector1 4
>     MGSVector2 8
>
>
>     Kind regards
>
>     Médéric
>
>     sel...@or...
>     <mailto:sel...@or...> a écrit :
>
>     Hello,
>
>      
>
>     I have got some troubles trying decoding a sequence with IDR
>     pictures. The SVC stream is decoded properly except that when
>     decoding an IDR picture, a sort of comeback occurs. It is like the
>     stream is paused, played back and then restarts being decoded
>     properly. However changing the spatial resolution is not affected.
>
>      
>
>     When I checked the JSVM encoder output, I found this stream
>     structure (which I think is the source of the problem):
>
>     AU     0: I    T0 L0 Q0   QP 34   Y 31.2299  U 41.3298  V
>     42.2093     13568 bit
>
>     AU     0: I    T0 L1 Q0   QP 34   Y 31.1768  U 41.8522  V
>     42.5728     55392 bit
>
>     AU    -8: P    T1 L0 Q0   QP 38   Y 30.3367  U 41.6256  V
>     42.7728      5664 bit
>
>     AU    -8: P    T1 L1 Q0   QP 38   Y 30.2618  U 42.3020  V
>     42.4606     34912 bit
>
>     AU   -12: P    T2 L0 Q0   QP 39   Y 30.0292  U 41.6095  V
>     42.7954      3280 bit
>
>     AU   -12: P    T2 L1 Q0   QP 39   Y 29.9022  U 42.2241  V 42.2924
>         27568 bit
>
>     AU   -14: P    T3 L0 Q0   QP 40   Y 29.7667  U 41.6960  V
>     42.9154      1440 bit
>
>     AU   -14: P    T3 L1 Q0   QP 40   Y 29.2568  U 42.2922  V
>     42.3649     13952 bit
>
>     AU   -15: P    T4 L0 Q0   QP 42   Y 29.6208  U 41.6600  V
>     42.9284       728 bit
>
>      
>
>     I suspect the « - » ordered pictures to trouble the decoder.
>
>     Please find attached the configuration files I used and the
>     encoder output.
>
>      
>
>     I tested you video_2 sequence and I noticed that we could change
>     spatial resolution without problems so it should include IDR
>     pictures. I was wondering if there are any constraints to include
>     in the JSVM configuration files in order to have the stream work
>     properly with Open SVC Decoder.
>
>      
>
>     Best regards,
>
>     Selim
>
>      
>
>      
>
>      
>
>     --
>
>     *Médéric Blestel*
>
>     *Ingénieur de Recherche / Research Engineer*
>
>
>
>
>
>
>     *IETR/Groupe Image* 
>
>
>
>
>
>
>     	
>
>     *INSA DE RENNES*
>
>     *20 AVENUE DES BUTTES DE COESMES*
>
>     *CS 70 839*
>
>     *35 708 RENNES CEDEX 7*
>
>     Tél : +33 (2) 23 23 85 67
>
>     <image001.gif>
>
>     	
>
>     <image002.jpg>
>
>      
>
>      
>
>      
>
>      
>
>      
>
>
>
>     ------------------------------------------------------------------------
>
>
>      
>
>      
>
>      
>
>      
>
>      
>
>      
>
>       
>
>      
>
>     ------------------------------------------------------------------------------
>
>     ThinkGeek and WIRED's GeekDad team up for the Ultimate 
>
>     GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the 
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>      
>
>      
>
>      
>
>      
>
>
>
>     ------------------------------------------------------------------------
>
>
>      
>
>      
>
>      
>
>      
>
>      
>
>      
>
>       
>
>      
>
>     _______________________________________________
>
>     Opensvcdecoder-support mailing list
>
>     Ope...@li... <mailto:Ope...@li...>
>
>     https://lists.sourceforge.net/lists/listinfo/opensvcdecoder-support
>
>       
>
>      
>
>     --
>
>     *Médéric Blestel*
>
>     *Ingénieur de Recherche / Research Engineer*
>
>
>
>
>
>     *IETR/Groupe Image* 
>
>
>
>
>
>     	
>
>     *INSA DE RENNES*
>
>     *20 AVENUE DES BUTTES DE COESMES*
>
>     *CS 70 839*
>
>     *35 708 RENNES CEDEX 7*
>
>     Tél : +33 (2) 23 23 85 67
>
>     <image001.gif>
>
>     	
>
>     <image002.jpg>
>
>      
>
>      
>
>     --
>
>     *Médéric Blestel*
>
>     *Ingénieur de Recherche / Research Engineer*
>
>
>
>
>     *IETR/Groupe Image* 
>
>
>
>
>     	
>
>     *INSA DE RENNES*
>
>     *20 AVENUE DES BUTTES DE COESMES*
>
>     *CS 70 839*
>
>     *35 708 RENNES CEDEX 7*
>
>     Tél : +33 (2) 23 23 85 67
>
>     <image001.gif>
>
>     	
>
>     <image004.jpg>
>
>      
>
>     ------------------------------------------------------------------------------
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>      
>
>  
>


-- 

*Médéric Blestel*

*Ingénieur de Recherche / Research Engineer*

*IETR/Groupe Image* 

**

	

*INSA DE RENNES*

*20 AVENUE DES BUTTES DE COESMES*

*CS 70 839*

*35 708 RENNES CEDEX 7*

Tél : +33 (2) 23 23 85 67

	

Re: [Opensvcdecoder-support] Problem decoding IDR pictures

[<sel...@or...>]

Hello,

 

Thank you for your answer. We are using Mplayer. We will investigate the SEI messages in the coming days. 

Concerning the keyboard, it works fine but we need an automatic process. So we will try to find a way how to make the opensvcdecoder aware of a framerate change either with settemporalID or with an SEI message.

 

Best regards,

Selim

 

De : Mickaël Raulet [mailto:mr...@gm...] De la part de Mickaël Raulet
Envoyé : mercredi 30 juin 2010 18:00
À : ELLOUZE Selim RD-CORE-LAN
Cc : mr...@in...; med...@in...; ope...@li...
Objet : Re: [Opensvcdecoder-support] Problem decoding IDR pictures

 

Hi,

	We noticed that when we change the framerate, the player continues to decode with the initial one and the stream is accelerated or slowed down. We thought that the most efficient way is to inform the decoder about any modification applied to the stream by using an SEI message.

 

which player are you talking about? Mplayer?

 

You might consider to inform the player with SEI messages -- not the decoder -- to use such information. I don't see the case where it is useful in the decoder.

 

	Do you have any knowledge if there is a trick to make the decoder adapt to the new framerate ?

With Mplayer there is a trick using the keyboard. You can find all information here:

http://sourceforge.net/apps/mediawiki/opensvcdecoder/index.php?title=Mplayer#SVC_Features_in_MPlayer.

 

In the decoder API you can use settemporalID to change the decoding framerate.

 

Let us know if it works?

 

Best regards,

Mickaël

 

	 

	Regards,

	Selim

	 

	De : Mickaël Raulet [mailto:mr...@gm...] De la part de Mickaël Raulet
	Envoyé : mercredi 30 juin 2010 17:13
	À : ELLOUZE Selim RD-CORE-LAN
	Cc : med...@in...; ope...@li...
	Objet : Re: [Opensvcdecoder-support] Problem decoding IDR pictures

	 

	Hi selim,

	 

	we bypass SEI messages at this stage. It is not normative, just informative in the spec.

	 

	Could you tell us why you need them?

	 

	Best regards, 

	Mickaël

	 

	Le 30 juin 2010 à 17:08, <sel...@or...> a écrit :

	
	
	
	

	Hello Mederic,

	 

	I will try with the value 0 and let you know about the results.

	Concerning the scalability SEI message, do you have an idea if opensvcdecoder supports such messages ? and if we could use it to inform the decoder about a framerate change or any modification of the stream ?

	 

	Best regards,

	Selim    

	 

	De : mblestel [mailto:med...@in...] 
	Envoyé : mercredi 30 juin 2010 09:55
	À : ELLOUZE Selim RD-CORE-LAN
	Cc : ope...@li...
	Objet : Re: [Opensvcdecoder-support] Problem decoding IDR pictures

	 

	Hello Selim,
	
	
	Thank you for testing the decoder.
	
	Having a look to your cfg files, I point out that you are using MGS Vectors eqauls to 1
	I think that the problem can come from this option.
	
	You should try with MGS Vector equals to 0.
	
	I will try to solve the bug with the MGS Vector option.
	
	Kind regards
	
	Médéric
	
	
	
	sel...@or... a écrit :

	Hello again,

	 

	Please find attached 3 streams containing MGS layers:

	DQD : L0Q1 (working)

	DQDQ : L0Q1 + L1Q1 (not working fine)

	DDQ : L1Q1 (not working fine)

	 

	If you have any configuration scheme where MGS layers are decoded fine, could you please send it to me that will be of great help.

	 

	Otherwise, is the opensvcdecoder capable of handling the SEI messages? Especially the SSEI or the layers not present SEI message. Our intention is to provide such messages when modifying the stream in order to let the player know about the new stream characteristics.

	 

	Thankfully,

	Selim

	 

	 

	 

	De : mblestel [mailto:med...@in...] 
	Envoyé : mercredi 16 juin 2010 09:16
	À : ELLOUZE Selim RD-CORE-LAN
	Cc : ope...@li...
	Objet : Re: [Opensvcdecoder-support] Problem decoding IDR pictures

	 

	Hello Selim,
	
	I know that I have problems with MGS case, but it depends of the encoding parameters.
	For example, the decoder is compatible with the following stream (SVCBMT-13.264)  which is part from the conformance testing of the SVC standard.
	This stream has three layers, DqId equals to 0, 1 or 2.
	
	I have also several others streams with different configurations in which MGS layers have dependency_id different from 0. And the decoder is able to decode correctly these streams.
	
	If you can provide me streams and configuration files for the case where OpenSVCDecoder is not compatible with.
	
	Kind regards
	
	Médéric
	
	
	
	sel...@or... a écrit :

	Hello again,

	 

	Reporting on MGS case: I have tested some scenarios and I noticed that MGS is fine only with one layer on top of the base layer, i.e L0Q0 - L0Q1 works. I have also test L0Q0-L0Q1-L1Q0 and it works fine. However these cases are not supported by the OpenSVC Decoder:

	More than one MGS Layer on top of the base layer

	Any MGS layer with L > 0

	That means the only case it works Q=1 and L=0.

	I hope this could help any future work on this issue.

	 

	Best regards,

	Selim   

	 

	De : mblestel [mailto:med...@in...] 
	Envoyé : vendredi 11 juin 2010 17:34
	À : ELLOUZE Selim RD-CORE-LAN
	Cc : ope...@li...; mr...@in...
	Objet : Re: Problem decoding IDR pictures

	 

	
	Hello Selim,
	
	First, thank you for using Open SVC Decoder.
	
	The problem was due to negative POC, which are authorized in the SVC standard.
	The modifications can be found under the revision 171 of the SVN repository.
	
	Concerning constraints in configuration files, Open SVC Decoder is not compatible with MGSVector.
	These following lines should be removed from configuration files:
	MGSVectorMode 1
	MGSVector0 4
	MGSVector1 4
	MGSVector2 8
	
	
	Kind regards
	
	Médéric
	
	sel...@or... a écrit :

	Hello,

	 

	I have got some troubles trying decoding a sequence with IDR pictures. The SVC stream is decoded properly except that when decoding an IDR picture, a sort of comeback occurs. It is like the stream is paused, played back and then restarts being decoded properly. However changing the spatial resolution is not affected.

	 

	When I checked the JSVM encoder output, I found this stream structure (which I think is the source of the problem):

	AU     0: I    T0 L0 Q0   QP 34   Y 31.2299  U 41.3298  V 42.2093     13568 bit

	AU     0: I    T0 L1 Q0   QP 34   Y 31.1768  U 41.8522  V 42.5728     55392 bit

	AU    -8: P    T1 L0 Q0   QP 38   Y 30.3367  U 41.6256  V 42.7728      5664 bit

	AU    -8: P    T1 L1 Q0   QP 38   Y 30.2618  U 42.3020  V 42.4606     34912 bit

	AU   -12: P    T2 L0 Q0   QP 39   Y 30.0292  U 41.6095  V 42.7954      3280 bit

	AU   -12: P    T2 L1 Q0   QP 39   Y 29.9022  U 42.2241  V 42.2924     27568 bit

	AU   -14: P    T3 L0 Q0   QP 40   Y 29.7667  U 41.6960  V 42.9154      1440 bit

	AU   -14: P    T3 L1 Q0   QP 40   Y 29.2568  U 42.2922  V 42.3649     13952 bit

	AU   -15: P    T4 L0 Q0   QP 42   Y 29.6208  U 41.6600  V 42.9284       728 bit

	 

	I suspect the « - » ordered pictures to trouble the decoder.

	Please find attached the configuration files I used and the encoder output.

	 

	I tested you video_2 sequence and I noticed that we could change spatial resolution without problems so it should include IDR pictures. I was wondering if there are any constraints to include in the JSVM configuration files in order to have the stream work properly with Open SVC Decoder.

	 

	Best regards,

	Selim

	 

	 

	 

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Re: [Opensvcdecoder-support] Problem decoding IDR pictures

[mblestel <med...@in...>]

Hello Selim,

I have corrected bugs in the decoder to decode correctly the 3 streams 
you send to me.
Modifications are available under the 186th version of the SVN repository.

Thank you for testing the decoder.

Best regards,

Médéric



sel...@or... a écrit :
>
> Hello again,
>
> Please find attached 3 streams containing MGS layers:
>
> - DQD : L0Q1 (working)
>
> - DQDQ : L0Q1 + L1Q1 (not working fine)
>
> - DDQ : L1Q1 (not working fine)
>
> If you have any configuration scheme where MGS layers are decoded 
> fine, could you please send it to me that will be of great help.
>
> Otherwise, is the opensvcdecoder capable of handling the SEI messages? 
> Especially the SSEI or the layers not present SEI message. Our 
> intention is to provide such messages when modifying the stream in 
> order to let the player know about the new stream characteristics.
>
> Thankfully,
>
> Selim
>
> *De :* mblestel [mailto:med...@in...]
> *Envoyé :* mercredi 16 juin 2010 09:16
> *À :* ELLOUZE Selim RD-CORE-LAN
> *Cc :* ope...@li...
> *Objet :* Re: [Opensvcdecoder-support] Problem decoding IDR pictures
>
> Hello Selim,
>
> I know that I have problems with MGS case, but it depends of the 
> encoding parameters.
> For example, the decoder is compatible with the following stream 
> (SVCBMT-13.264) which is part from the conformance testing of the SVC 
> standard.
> This stream has three layers, DqId equals to 0, 1 or 2.
>
> I have also several others streams with different configurations in 
> which MGS layers have dependency_id different from 0. And the decoder 
> is able to decode correctly these streams.
>
> If you can provide me streams and configuration files for the case 
> where OpenSVCDecoder is not compatible with.
>
> Kind regards
>
> Médéric
>
>
>
> sel...@or... 
> <mailto:sel...@or...> a écrit :
>
> Hello again,
>
> Reporting on MGS case: I have tested some scenarios and I noticed that 
> MGS is fine only with one layer on top of the base layer, i.e L0Q0 – 
> L0Q1 works. I have also test L0Q0-L0Q1-L1Q0 and it works fine. However 
> these cases are not supported by the OpenSVC Decoder:
>
> More than one MGS Layer on top of the base layer
>
> Any MGS layer with L > 0
>
> That means the only case it works Q=1 and L=0.
>
> I hope this could help any future work on this issue.
>
> Best regards,
>
> Selim
>
> *De :* mblestel [mailto:med...@in...]
> *Envoyé :* vendredi 11 juin 2010 17:34
> *À :* ELLOUZE Selim RD-CORE-LAN
> *Cc :* ope...@li... 
> <mailto:ope...@li...>; 
> mr...@in... <mailto:mr...@in...>
> *Objet :* Re: Problem decoding IDR pictures
>
>
> Hello Selim,
>
> First, thank you for using Open SVC Decoder.
>
> The problem was due to negative POC, which are authorized in the SVC 
> standard.
> The modifications can be found under the revision 171 of the SVN 
> repository.
>
> Concerning constraints in configuration files, Open SVC Decoder is not 
> compatible with MGSVector.
> These following lines should be removed from configuration files:
> MGSVectorMode 1
> MGSVector0 4
> MGSVector1 4
> MGSVector2 8
>
>
> Kind regards
>
> Médéric
>
> sel...@or... 
> <mailto:sel...@or...> a écrit :
>
> Hello,
>
> I have got some troubles trying decoding a sequence with IDR pictures. 
> The SVC stream is decoded properly except that when decoding an IDR 
> picture, a sort of comeback occurs. It is like the stream is paused, 
> played back and then restarts being decoded properly. However changing 
> the spatial resolution is not affected.
>
> When I checked the JSVM encoder output, I found this stream structure 
> (which I think is the source of the problem):
>
> AU 0: I T0 L0 Q0 QP 34 Y 31.2299 U 41.3298 V 42.2093 13568 bit
>
> AU 0: I T0 L1 Q0 QP 34 Y 31.1768 U 41.8522 V 42.5728 55392 bit
>
> AU -8: P T1 L0 Q0 QP 38 Y 30.3367 U 41.6256 V 42.7728 5664 bit
>
> AU -8: P T1 L1 Q0 QP 38 Y 30.2618 U 42.3020 V 42.4606 34912 bit
>
> AU -12: P T2 L0 Q0 QP 39 Y 30.0292 U 41.6095 V 42.7954 3280 bit
>
> AU -12: P T2 L1 Q0 QP 39 Y 29.9022 U 42.2241 V 42.2924 27568 bit
>
> AU -14: P T3 L0 Q0 QP 40 Y 29.7667 U 41.6960 V 42.9154 1440 bit
>
> AU -14: P T3 L1 Q0 QP 40 Y 29.2568 U 42.2922 V 42.3649 13952 bit
>
> AU -15: P T4 L0 Q0 QP 42 Y 29.6208 U 41.6600 V 42.9284 728 bit
>
> I suspect the « - » ordered pictures to trouble the decoder.
>
> Please find attached the configuration files I used and the encoder 
> output.
>
> I tested you video_2 sequence and I noticed that we could change 
> spatial resolution without problems so it should include IDR pictures. 
> I was wondering if there are any constraints to include in the JSVM 
> configuration files in order to have the stream work properly with 
> Open SVC Decoder.
>
> Best regards,
>
> Selim
>
> -- 
>
> *Médéric Blestel*
>
> *Ingénieur de Recherche / Research Engineer*
>
>
>
> *IETR/Groupe Image*
>
>
>
> 	
>
> *INSA DE RENNES*
>
> *20 AVENUE DES BUTTES DE COESMES*
>
> *CS 70 839*
>
> *35 708 RENNES CEDEX 7*
>
> Tél : +33 (2) 23 23 85 67
>
> 	
>
>  
> ------------------------------------------------------------------------
>
>
>   
>  
> ------------------------------------------------------------------------------
> ThinkGeek and WIRED's GeekDad team up for the Ultimate 
> GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the 
> lucky parental unit.  See the prize list and enter to win: 
> http://p.sf.net/sfu/thinkgeek-promo
>  
> ------------------------------------------------------------------------
>
>
>   
>  
> _______________________________________________
> Opensvcdecoder-support mailing list
> Ope...@li... <mailto:Ope...@li...>
> https://lists.sourceforge.net/lists/listinfo/opensvcdecoder-support
>   
>
> -- 
>
> *Médéric Blestel*
>
> *Ingénieur de Recherche / Research Engineer*
>
>
> *IETR/Groupe Image*
>
>
> 	
>
> *INSA DE RENNES*
>
> *20 AVENUE DES BUTTES DE COESMES*
>
> *CS 70 839*
>
> *35 708 RENNES CEDEX 7*
>
> Tél : +33 (2) 23 23 85 67
>
> 	
>


-- 

*Médéric Blestel*

*Ingénieur de Recherche / Research Engineer*

*IETR/Groupe Image*

**

	

*INSA DE RENNES*

*20 AVENUE DES BUTTES DE COESMES*

*CS 70 839*

*35 708 RENNES CEDEX 7*

Tél : +33 (2) 23 23 85 67

	

Re: [Opensvcdecoder-support] Problem decoding IDR pictures

[M. R. <mr...@in...>]

Hi,
> We noticed that when we change the framerate, the player continues to decode with the initial one and the stream is accelerated or slowed down. We thought that the most efficient way is to inform the decoder about any modification applied to the stream by using an SEI message.


which player are you talking about? Mplayer?

You might consider to inform the player with SEI messages -- not the decoder -- to use such information. I don't see the case where it is useful in the decoder.

> Do you have any knowledge if there is a trick to make the decoder adapt to the new framerate ?
With Mplayer there is a trick using the keyboard. You can find all information here:
http://sourceforge.net/apps/mediawiki/opensvcdecoder/index.php?title=Mplayer#SVC_Features_in_MPlayer.

In the decoder API you can use settemporalID to change the decoding framerate.

Let us know if it works?

Best regards,
Mickaël

>  
> Regards,
> Selim
>  
> De : Mickaël Raulet [mailto:mr...@gm...] De la part de Mickaël Raulet
> Envoyé : mercredi 30 juin 2010 17:13
> À : ELLOUZE Selim RD-CORE-LAN
> Cc : med...@in...; ope...@li...
> Objet : Re: [Opensvcdecoder-support] Problem decoding IDR pictures
>  
> Hi selim,
>  
> we bypass SEI messages at this stage. It is not normative, just informative in the spec.
>  
> Could you tell us why you need them?
>  
> Best regards, 
> Mickaël
>  
> Le 30 juin 2010 à 17:08, <sel...@or...> a écrit :
> 
> 
> Hello Mederic,
>  
> I will try with the value 0 and let you know about the results.
> Concerning the scalability SEI message, do you have an idea if opensvcdecoder supports such messages ? and if we could use it to inform the decoder about a framerate change or any modification of the stream ?
>  
> Best regards,
> Selim    
>  
> De : mblestel [mailto:med...@in...] 
> Envoyé : mercredi 30 juin 2010 09:55
> À : ELLOUZE Selim RD-CORE-LAN
> Cc : ope...@li...
> Objet : Re: [Opensvcdecoder-support] Problem decoding IDR pictures
>  
> Hello Selim,
> 
> 
> Thank you for testing the decoder.
> 
> Having a look to your cfg files, I point out that you are using MGS Vectors eqauls to 1
> I think that the problem can come from this option.
> 
> You should try with MGS Vector equals to 0.
> 
> I will try to solve the bug with the MGS Vector option.
> 
> Kind regards
> 
> Médéric
> 
> 
> 
> sel...@or... a écrit :
> Hello again,
>  
> Please find attached 3 streams containing MGS layers:
> DQD : L0Q1 (working)
> DQDQ : L0Q1 + L1Q1 (not working fine)
> DDQ : L1Q1 (not working fine)
>  
> If you have any configuration scheme where MGS layers are decoded fine, could you please send it to me that will be of great help.
>  
> Otherwise, is the opensvcdecoder capable of handling the SEI messages? Especially the SSEI or the layers not present SEI message. Our intention is to provide such messages when modifying the stream in order to let the player know about the new stream characteristics.
>  
> Thankfully,
> Selim
>  
>  
>  
> De : mblestel [mailto:med...@in...] 
> Envoyé : mercredi 16 juin 2010 09:16
> À : ELLOUZE Selim RD-CORE-LAN
> Cc : ope...@li...
> Objet : Re: [Opensvcdecoder-support] Problem decoding IDR pictures
>  
> Hello Selim,
> 
> I know that I have problems with MGS case, but it depends of the encoding parameters.
> For example, the decoder is compatible with the following stream (SVCBMT-13.264)  which is part from the conformance testing of the SVC standard.
> This stream has three layers, DqId equals to 0, 1 or 2.
> 
> I have also several others streams with different configurations in which MGS layers have dependency_id different from 0. And the decoder is able to decode correctly these streams.
> 
> If you can provide me streams and configuration files for the case where OpenSVCDecoder is not compatible with.
> 
> Kind regards
> 
> Médéric
> 
> 
> 
> sel...@or... a écrit :
> Hello again,
>  
> Reporting on MGS case: I have tested some scenarios and I noticed that MGS is fine only with one layer on top of the base layer, i.e L0Q0 – L0Q1 works. I have also test L0Q0-L0Q1-L1Q0 and it works fine. However these cases are not supported by the OpenSVC Decoder:
> More than one MGS Layer on top of the base layer
> Any MGS layer with L > 0
> That means the only case it works Q=1 and L=0.
> I hope this could help any future work on this issue.
>  
> Best regards,
> Selim   
>  
> De : mblestel [mailto:med...@in...] 
> Envoyé : vendredi 11 juin 2010 17:34
> À : ELLOUZE Selim RD-CORE-LAN
> Cc : ope...@li...; mr...@in...
> Objet : Re: Problem decoding IDR pictures
>  
> 
> Hello Selim,
> 
> First, thank you for using Open SVC Decoder.
> 
> The problem was due to negative POC, which are authorized in the SVC standard.
> The modifications can be found under the revision 171 of the SVN repository.
> 
> Concerning constraints in configuration files, Open SVC Decoder is not compatible with MGSVector.
> These following lines should be removed from configuration files:
> MGSVectorMode 1
> MGSVector0 4
> MGSVector1 4
> MGSVector2 8
> 
> 
> Kind regards
> 
> Médéric
> 
> sel...@or... a écrit :
> Hello,
>  
> I have got some troubles trying decoding a sequence with IDR pictures. The SVC stream is decoded properly except that when decoding an IDR picture, a sort of comeback occurs. It is like the stream is paused, played back and then restarts being decoded properly. However changing the spatial resolution is not affected.
>  
> When I checked the JSVM encoder output, I found this stream structure (which I think is the source of the problem):
> AU     0: I    T0 L0 Q0   QP 34   Y 31.2299  U 41.3298  V 42.2093     13568 bit
> AU     0: I    T0 L1 Q0   QP 34   Y 31.1768  U 41.8522  V 42.5728     55392 bit
> AU    -8: P    T1 L0 Q0   QP 38   Y 30.3367  U 41.6256  V 42.7728      5664 bit
> AU    -8: P    T1 L1 Q0   QP 38   Y 30.2618  U 42.3020  V 42.4606     34912 bit
> AU   -12: P    T2 L0 Q0   QP 39   Y 30.0292  U 41.6095  V 42.7954      3280 bit
> AU   -12: P    T2 L1 Q0   QP 39   Y 29.9022  U 42.2241  V 42.2924     27568 bit
> AU   -14: P    T3 L0 Q0   QP 40   Y 29.7667  U 41.6960  V 42.9154      1440 bit
> AU   -14: P    T3 L1 Q0   QP 40   Y 29.2568  U 42.2922  V 42.3649     13952 bit
> AU   -15: P    T4 L0 Q0   QP 42   Y 29.6208  U 41.6600  V 42.9284       728 bit
>  
> I suspect the « - » ordered pictures to trouble the decoder.
> Please find attached the configuration files I used and the encoder output.
>  
> I tested you video_2 sequence and I noticed that we could change spatial resolution without problems so it should include IDR pictures. I was wondering if there are any constraints to include in the JSVM configuration files in order to have the stream work properly with Open SVC Decoder.
>  
> Best regards,
> Selim
>  
>  
>  
> 
> --
> Médéric Blestel
> Ingénieur de Recherche / Research Engineer
> 
> 
> 
> 
> 
> IETR/Groupe Image 
> 
> 
> 
> 
> 
> INSA DE RENNES
> 20 AVENUE DES BUTTES DE COESMES
> CS 70 839
> 35 708 RENNES CEDEX 7
> 
> Tél : +33 (2) 23 23 85 67
> <image001.gif>
> <image002.jpg>
>  
>  
>  
> 
> 
> 
> 
>  
>  
>  
>  
>   
>  
> ------------------------------------------------------------------------------
> ThinkGeek and WIRED's GeekDad team up for the Ultimate 
> GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the 
> lucky parental unit.  See the prize list and enter to win: 
> http://p.sf.net/sfu/thinkgeek-promo
>  
>  
> 
> 
> 
> 
>  
>  
>  
>  
>   
>  
> _______________________________________________
> Opensvcdecoder-support mailing list
> Ope...@li...
> https://lists.sourceforge.net/lists/listinfo/opensvcdecoder-support
>   
>  
> 
> --
> Médéric Blestel
> Ingénieur de Recherche / Research Engineer
> 
> 
> 
> 
> IETR/Groupe Image 
> 
> 
> 
> 
> INSA DE RENNES
> 20 AVENUE DES BUTTES DE COESMES
> CS 70 839
> 35 708 RENNES CEDEX 7
> 
> Tél : +33 (2) 23 23 85 67
> <image001.gif>
> <image002.jpg>
>  
>  
> 
> --
> Médéric Blestel
> Ingénieur de Recherche / Research Engineer
> 
> 
> 
> IETR/Groupe Image 
> 
> 
> 
> INSA DE RENNES
> 20 AVENUE DES BUTTES DE COESMES
> CS 70 839
> 35 708 RENNES CEDEX 7
> 
> Tél : +33 (2) 23 23 85 67
> <image001.gif>
> <image004.jpg>
>  
> ------------------------------------------------------------------------------
> This SF.net email is sponsored by Sprint
> What will you do first with EVO, the first 4G phone?
> Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first_______________________________________________
> Opensvcdecoder-support mailing list
> Ope...@li...
> https://lists.sourceforge.net/lists/listinfo/opensvcdecoder-support
>  

Re: [Opensvcdecoder-support] Problem decoding IDR pictures

[<sel...@or...>]

We noticed that when we change the framerate, the player continues to decode with the initial one and the stream is accelerated or slowed down. We thought that the most efficient way is to inform the decoder about any modification applied to the stream by using an SEI message. 

Do you have any knowledge if there is a trick to make the decoder adapt to the new framerate ?

 

Regards,

Selim 

 

De : Mickaël Raulet [mailto:mr...@gm...] De la part de Mickaël Raulet
Envoyé : mercredi 30 juin 2010 17:13
À : ELLOUZE Selim RD-CORE-LAN
Cc : med...@in...; ope...@li...
Objet : Re: [Opensvcdecoder-support] Problem decoding IDR pictures

 

Hi selim,

 

we bypass SEI messages at this stage. It is not normative, just informative in the spec.

 

Could you tell us why you need them?

 

Best regards, 

Mickaël

 

Le 30 juin 2010 à 17:08, <sel...@or...> a écrit :





Hello Mederic,

 

I will try with the value 0 and let you know about the results.

Concerning the scalability SEI message, do you have an idea if opensvcdecoder supports such messages ? and if we could use it to inform the decoder about a framerate change or any modification of the stream ?

 

Best regards,

Selim    

 

De : mblestel [mailto:med...@in...] 
Envoyé : mercredi 30 juin 2010 09:55
À : ELLOUZE Selim RD-CORE-LAN
Cc : ope...@li...
Objet : Re: [Opensvcdecoder-support] Problem decoding IDR pictures

 

Hello Selim,


Thank you for testing the decoder.

Having a look to your cfg files, I point out that you are using MGS Vectors eqauls to 1
I think that the problem can come from this option.

You should try with MGS Vector equals to 0.

I will try to solve the bug with the MGS Vector option.

Kind regards

Médéric



sel...@or... a écrit :

Hello again,

 

Please find attached 3 streams containing MGS layers:

DQD : L0Q1 (working)

DQDQ : L0Q1 + L1Q1 (not working fine)

DDQ : L1Q1 (not working fine)

 

If you have any configuration scheme where MGS layers are decoded fine, could you please send it to me that will be of great help.

 

Otherwise, is the opensvcdecoder capable of handling the SEI messages? Especially the SSEI or the layers not present SEI message. Our intention is to provide such messages when modifying the stream in order to let the player know about the new stream characteristics.

 

Thankfully,

Selim

 

 

 

De : mblestel [mailto:med...@in...] 
Envoyé : mercredi 16 juin 2010 09:16
À : ELLOUZE Selim RD-CORE-LAN
Cc : ope...@li...
Objet : Re: [Opensvcdecoder-support] Problem decoding IDR pictures

 

Hello Selim,

I know that I have problems with MGS case, but it depends of the encoding parameters.
For example, the decoder is compatible with the following stream (SVCBMT-13.264)  which is part from the conformance testing of the SVC standard.
This stream has three layers, DqId equals to 0, 1 or 2.

I have also several others streams with different configurations in which MGS layers have dependency_id different from 0. And the decoder is able to decode correctly these streams.

If you can provide me streams and configuration files for the case where OpenSVCDecoder is not compatible with.

Kind regards

Médéric



sel...@or... a écrit :

Hello again,

 

Reporting on MGS case: I have tested some scenarios and I noticed that MGS is fine only with one layer on top of the base layer, i.e L0Q0 - L0Q1 works. I have also test L0Q0-L0Q1-L1Q0 and it works fine. However these cases are not supported by the OpenSVC Decoder:

More than one MGS Layer on top of the base layer

Any MGS layer with L > 0

That means the only case it works Q=1 and L=0.

I hope this could help any future work on this issue.

 

Best regards,

Selim   

 

De : mblestel [mailto:med...@in...] 
Envoyé : vendredi 11 juin 2010 17:34
À : ELLOUZE Selim RD-CORE-LAN
Cc : ope...@li...; mr...@in...
Objet : Re: Problem decoding IDR pictures

 


Hello Selim,

First, thank you for using Open SVC Decoder.

The problem was due to negative POC, which are authorized in the SVC standard.
The modifications can be found under the revision 171 of the SVN repository.

Concerning constraints in configuration files, Open SVC Decoder is not compatible with MGSVector.
These following lines should be removed from configuration files:
MGSVectorMode 1
MGSVector0 4
MGSVector1 4
MGSVector2 8


Kind regards

Médéric

sel...@or... a écrit :

Hello,

 

I have got some troubles trying decoding a sequence with IDR pictures. The SVC stream is decoded properly except that when decoding an IDR picture, a sort of comeback occurs. It is like the stream is paused, played back and then restarts being decoded properly. However changing the spatial resolution is not affected.

 

When I checked the JSVM encoder output, I found this stream structure (which I think is the source of the problem):

AU     0: I    T0 L0 Q0   QP 34   Y 31.2299  U 41.3298  V 42.2093     13568 bit

AU     0: I    T0 L1 Q0   QP 34   Y 31.1768  U 41.8522  V 42.5728     55392 bit

AU    -8: P    T1 L0 Q0   QP 38   Y 30.3367  U 41.6256  V 42.7728      5664 bit

AU    -8: P    T1 L1 Q0   QP 38   Y 30.2618  U 42.3020  V 42.4606     34912 bit

AU   -12: P    T2 L0 Q0   QP 39   Y 30.0292  U 41.6095  V 42.7954      3280 bit

AU   -12: P    T2 L1 Q0   QP 39   Y 29.9022  U 42.2241  V 42.2924     27568 bit

AU   -14: P    T3 L0 Q0   QP 40   Y 29.7667  U 41.6960  V 42.9154      1440 bit

AU   -14: P    T3 L1 Q0   QP 40   Y 29.2568  U 42.2922  V 42.3649     13952 bit

AU   -15: P    T4 L0 Q0   QP 42   Y 29.6208  U 41.6600  V 42.9284       728 bit

 

I suspect the « - » ordered pictures to trouble the decoder.

Please find attached the configuration files I used and the encoder output.

 

I tested you video_2 sequence and I noticed that we could change spatial resolution without problems so it should include IDR pictures. I was wondering if there are any constraints to include in the JSVM configuration files in order to have the stream work properly with Open SVC Decoder.

 

Best regards,

Selim

 

 

 

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Re: [Opensvcdecoder-support] Problem decoding IDR pictures

[M. R. <mr...@in...>]

Hi selim,

we bypass SEI messages at this stage. It is not normative, just informative in the spec.

Could you tell us why you need them?

Best regards, 
Mickaël

Le 30 juin 2010 à 17:08, <sel...@or...> a écrit :

> Hello Mederic,
>  
> I will try with the value 0 and let you know about the results.
> Concerning the scalability SEI message, do you have an idea if opensvcdecoder supports such messages ? and if we could use it to inform the decoder about a framerate change or any modification of the stream ?
>  
> Best regards,
> Selim    
>  
> De : mblestel [mailto:med...@in...] 
> Envoyé : mercredi 30 juin 2010 09:55
> À : ELLOUZE Selim RD-CORE-LAN
> Cc : ope...@li...
> Objet : Re: [Opensvcdecoder-support] Problem decoding IDR pictures
>  
> Hello Selim,
> 
> 
> Thank you for testing the decoder.
> 
> Having a look to your cfg files, I point out that you are using MGS Vectors eqauls to 1
> I think that the problem can come from this option.
> 
> You should try with MGS Vector equals to 0.
> 
> I will try to solve the bug with the MGS Vector option.
> 
> Kind regards
> 
> Médéric
> 
> 
> 
> sel...@or... a écrit :
> Hello again,
>  
> Please find attached 3 streams containing MGS layers:
> DQD : L0Q1 (working)
> DQDQ : L0Q1 + L1Q1 (not working fine)
> DDQ : L1Q1 (not working fine)
>  
> If you have any configuration scheme where MGS layers are decoded fine, could you please send it to me that will be of great help.
>  
> Otherwise, is the opensvcdecoder capable of handling the SEI messages? Especially the SSEI or the layers not present SEI message. Our intention is to provide such messages when modifying the stream in order to let the player know about the new stream characteristics.
>  
> Thankfully,
> Selim
>  
>  
>  
> De : mblestel [mailto:med...@in...] 
> Envoyé : mercredi 16 juin 2010 09:16
> À : ELLOUZE Selim RD-CORE-LAN
> Cc : ope...@li...
> Objet : Re: [Opensvcdecoder-support] Problem decoding IDR pictures
>  
> Hello Selim,
> 
> I know that I have problems with MGS case, but it depends of the encoding parameters.
> For example, the decoder is compatible with the following stream (SVCBMT-13.264)  which is part from the conformance testing of the SVC standard.
> This stream has three layers, DqId equals to 0, 1 or 2.
> 
> I have also several others streams with different configurations in which MGS layers have dependency_id different from 0. And the decoder is able to decode correctly these streams.
> 
> If you can provide me streams and configuration files for the case where OpenSVCDecoder is not compatible with.
> 
> Kind regards
> 
> Médéric
> 
> 
> 
> sel...@or... a écrit :
> Hello again,
>  
> Reporting on MGS case: I have tested some scenarios and I noticed that MGS is fine only with one layer on top of the base layer, i.e L0Q0 – L0Q1 works. I have also test L0Q0-L0Q1-L1Q0 and it works fine. However these cases are not supported by the OpenSVC Decoder:
> More than one MGS Layer on top of the base layer
> Any MGS layer with L > 0
> That means the only case it works Q=1 and L=0.
> I hope this could help any future work on this issue.
>  
> Best regards,
> Selim   
>  
> De : mblestel [mailto:med...@in...] 
> Envoyé : vendredi 11 juin 2010 17:34
> À : ELLOUZE Selim RD-CORE-LAN
> Cc : ope...@li...; mr...@in...
> Objet : Re: Problem decoding IDR pictures
>  
> 
> Hello Selim,
> 
> First, thank you for using Open SVC Decoder.
> 
> The problem was due to negative POC, which are authorized in the SVC standard.
> The modifications can be found under the revision 171 of the SVN repository.
> 
> Concerning constraints in configuration files, Open SVC Decoder is not compatible with MGSVector.
> These following lines should be removed from configuration files:
> MGSVectorMode 1
> MGSVector0 4
> MGSVector1 4
> MGSVector2 8
> 
> 
> Kind regards
> 
> Médéric
> 
> sel...@or... a écrit :
> Hello,
>  
> I have got some troubles trying decoding a sequence with IDR pictures. The SVC stream is decoded properly except that when decoding an IDR picture, a sort of comeback occurs. It is like the stream is paused, played back and then restarts being decoded properly. However changing the spatial resolution is not affected.
>  
> When I checked the JSVM encoder output, I found this stream structure (which I think is the source of the problem):
> AU     0: I    T0 L0 Q0   QP 34   Y 31.2299  U 41.3298  V 42.2093     13568 bit
> AU     0: I    T0 L1 Q0   QP 34   Y 31.1768  U 41.8522  V 42.5728     55392 bit
> AU    -8: P    T1 L0 Q0   QP 38   Y 30.3367  U 41.6256  V 42.7728      5664 bit
> AU    -8: P    T1 L1 Q0   QP 38   Y 30.2618  U 42.3020  V 42.4606     34912 bit
> AU   -12: P    T2 L0 Q0   QP 39   Y 30.0292  U 41.6095  V 42.7954      3280 bit
> AU   -12: P    T2 L1 Q0   QP 39   Y 29.9022  U 42.2241  V 42.2924     27568 bit
> AU   -14: P    T3 L0 Q0   QP 40   Y 29.7667  U 41.6960  V 42.9154      1440 bit
> AU   -14: P    T3 L1 Q0   QP 40   Y 29.2568  U 42.2922  V 42.3649     13952 bit
> AU   -15: P    T4 L0 Q0   QP 42   Y 29.6208  U 41.6600  V 42.9284       728 bit
>  
> I suspect the « - » ordered pictures to trouble the decoder.
> Please find attached the configuration files I used and the encoder output.
>  
> I tested you video_2 sequence and I noticed that we could change spatial resolution without problems so it should include IDR pictures. I was wondering if there are any constraints to include in the JSVM configuration files in order to have the stream work properly with Open SVC Decoder.
>  
> Best regards,
> Selim
>  
>  
>  
> 
> --
> Médéric Blestel
> Ingénieur de Recherche / Research Engineer
> 
> 
> 
> 
> IETR/Groupe Image 
> 
> 
> 
> 
> INSA DE RENNES
> 20 AVENUE DES BUTTES DE COESMES
> CS 70 839
> 35 708 RENNES CEDEX 7
> 
> Tél : +33 (2) 23 23 85 67
> <image001.gif>
> <image002.jpg>
>  
>  
>  
> 
> 
>  
>  
>   
>  
> ------------------------------------------------------------------------------
> ThinkGeek and WIRED's GeekDad team up for the Ultimate 
> GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the 
> lucky parental unit.  See the prize list and enter to win: 
> http://p.sf.net/sfu/thinkgeek-promo
>  
>  
> 
> 
>  
>  
>   
>  
> _______________________________________________
> Opensvcdecoder-support mailing list
> Ope...@li...
> https://lists.sourceforge.net/lists/listinfo/opensvcdecoder-support
>   
>  
> 
> --
> Médéric Blestel
> Ingénieur de Recherche / Research Engineer
> 
> 
> 
> IETR/Groupe Image 
> 
> 
> 
> INSA DE RENNES
> 20 AVENUE DES BUTTES DE COESMES
> CS 70 839
> 35 708 RENNES CEDEX 7
> 
> Tél : +33 (2) 23 23 85 67
> <image001.gif>
> <image002.jpg>
>  
>  
> 
> --
> Médéric Blestel
> Ingénieur de Recherche / Research Engineer
> 
> 
> IETR/Groupe Image 
> 
> 
> INSA DE RENNES
> 20 AVENUE DES BUTTES DE COESMES
> CS 70 839
> 35 708 RENNES CEDEX 7
> 
> Tél : +33 (2) 23 23 85 67
> <image001.gif>
> <image004.jpg>
>  
> ------------------------------------------------------------------------------
> This SF.net email is sponsored by Sprint
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Re: [Opensvcdecoder-support] Problem decoding IDR pictures

[mblestel <med...@in...>]

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Hello Selim,<br>
<br>
<br>
Thank you for testing the decoder.<br>
<br>
Having a look to your cfg files, I point out that you are using MGS
Vectors eqauls to 1<br>
I think that the problem can come from this option.<br>
<br>
You should try with MGS Vector equals to 0.<br>
<br>
I will try to solve the bug with the MGS Vector option.<br>
<br>
Kind regards<br>
<br>
M&eacute;d&eacute;ric<br>
<br>
<br>
<br>
<a class="moz-txt-link-abbreviated" href="mailto:sel...@or...">sel...@or...</a> a &eacute;crit&nbsp;:
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  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);"
 lang="EN-US">Hello again,<o:p></o:p></span></p>
  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);"
 lang="EN-US"><o:p>&nbsp;</o:p></span></p>
  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);"
 lang="EN-US">Please find attached
3 streams containing MGS layers:<o:p></o:p></span></p>
  <p class="MsoListParagraph" style="text-indent: -18pt;"><!--[if !supportLists]--><span
 style="color: rgb(31, 73, 125);" lang="EN-US"><span style="">-<span
 style="font-family: &quot;Times New Roman&quot;; font-style: normal; font-variant: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-size-adjust: none; font-stretch: normal;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
  </span></span></span><!--[endif]--><span dir="ltr"></span><span
 style="color: rgb(31, 73, 125);" lang="EN-US">DQD : L0Q1 (working)<o:p></o:p></span></p>
  <p class="MsoListParagraph" style="text-indent: -18pt;"><!--[if !supportLists]--><span
 style="color: rgb(31, 73, 125);" lang="EN-US"><span style="">-<span
 style="font-family: &quot;Times New Roman&quot;; font-style: normal; font-variant: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-size-adjust: none; font-stretch: normal;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
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working fine)<o:p></o:p></span></p>
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 style="color: rgb(31, 73, 125);" lang="EN-US"><span style="">-<span
 style="font-family: &quot;Times New Roman&quot;; font-style: normal; font-variant: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-size-adjust: none; font-stretch: normal;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
  </span></span></span><!--[endif]--><span dir="ltr"></span><span
 style="color: rgb(31, 73, 125);" lang="EN-US">DDQ : L1Q1 (not working
fine)<o:p></o:p></span></p>
  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);"
 lang="EN-US"><o:p>&nbsp;</o:p></span></p>
  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);"
 lang="EN-US">If you have any
configuration scheme where MGS layers are decoded fine, could you
please send
it to me that will be of great help. <o:p></o:p></span></p>
  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);"
 lang="EN-US"><o:p>&nbsp;</o:p></span></p>
  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);"
 lang="EN-US">Otherwise, is the
opensvcdecoder capable of handling the SEI messages? Especially the
SSEI or the
layers not present SEI message. Our intention is to provide such
messages when
modifying the stream in order to let the player know about the new
stream
characteristics.<o:p></o:p></span></p>
  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);"
 lang="EN-US"><o:p>&nbsp;</o:p></span></p>
  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);"
 lang="EN-US">Thankfully,<o:p></o:p></span></p>
  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);"
 lang="EN-US">Selim<o:p></o:p></span></p>
  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);"
 lang="EN-US"><o:p>&nbsp;</o:p></span></p>
  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);"
 lang="EN-US">&nbsp;<o:p></o:p></span></p>
  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);"
 lang="EN-US"><o:p>&nbsp;</o:p></span></p>
  <div>
  <div
 style="border-style: solid none none; border-color: rgb(181, 196, 223) -moz-use-text-color -moz-use-text-color; border-width: 1pt medium medium; padding: 3pt 0cm 0cm;">
  <p class="MsoNormal"><b><span
 style="font-size: 10pt; font-family: &quot;Tahoma&quot;,&quot;sans-serif&quot;; color: windowtext;">De&nbsp;:</span></b><span
 style="font-size: 10pt; font-family: &quot;Tahoma&quot;,&quot;sans-serif&quot;; color: windowtext;">
mblestel
[<a class="moz-txt-link-freetext" href="mailto:med...@in...">mailto:med...@in...</a>] <br>
  <b>Envoy&eacute;&nbsp;:</b> mercredi 16 juin 2010 09:16<br>
  <b>&Agrave;&nbsp;:</b> ELLOUZE Selim RD-CORE-LAN<br>
  <b>Cc&nbsp;:</b> <a class="moz-txt-link-abbreviated" href="mailto:ope...@li...">ope...@li...</a><br>
  <b>Objet&nbsp;:</b> Re: [Opensvcdecoder-support] Problem decoding IDR
pictures<o:p></o:p></span></p>
  </div>
  </div>
  <p class="MsoNormal"><o:p>&nbsp;</o:p></p>
  <p class="MsoNormal">Hello Selim,<br>
  <br>
I know that I have problems with MGS case, but it depends of the
encoding
parameters.<br>
For example, the decoder is compatible with the following stream
(SVCBMT-13.264)&nbsp; which is part from the conformance testing of the SVC
standard.<br>
This stream has three layers, DqId equals to 0, 1 or 2.<br>
  <br>
I have also several others streams with different configurations in
which MGS
layers have dependency_id different from 0. And the decoder is able to
decode
correctly these streams.<br>
  <br>
If you can provide me streams and configuration files for the case
where
OpenSVCDecoder is not compatible with.<br>
  <br>
Kind regards<br>
  <br>
M&eacute;d&eacute;ric<br>
  <br>
  <br>
  <br>
  <a moz-do-not-send="true"
 href="mailto:sel...@or...">sel...@or...</a>
a &eacute;crit&nbsp;: <o:p></o:p></p>
  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);">Hello
again,</span><o:p></o:p></p>
  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);">&nbsp;</span><o:p></o:p></p>
  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);"
 lang="EN-US">Reporting on MGS
case: I have tested some scenarios and I noticed that MGS is fine only
with one
layer on top of the base layer, i.e L0Q0 &#8211; L0Q1 works. I have also test
L0Q0-L0Q1-L1Q0 and it works fine. However these cases are not supported
by the
OpenSVC Decoder:</span><o:p></o:p></p>
  <p class="MsoListParagraph" style="text-indent: -18pt;"><span
 style="color: rgb(31, 73, 125);" lang="EN-US">More than one MGS Layer
on top of the base layer</span><o:p></o:p></p>
  <p class="MsoListParagraph" style="text-indent: -18pt;"><span
 style="color: rgb(31, 73, 125);" lang="EN-US">Any MGS layer with L
&gt; 0</span><o:p></o:p></p>
  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);"
 lang="EN-US">That means the only
case it works Q=1 and L=0. </span><o:p></o:p></p>
  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);"
 lang="EN-US">I hope this could
help any future work on this issue.</span><o:p></o:p></p>
  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);"
 lang="EN-US">&nbsp;</span><o:p></o:p></p>
  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);"
 lang="EN-US">Best regards,</span><o:p></o:p></p>
  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);"
 lang="EN-US">Selim &nbsp;&nbsp;</span><o:p></o:p></p>
  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);"
 lang="EN-US">&nbsp;</span><o:p></o:p></p>
  <div>
  <div
 style="border-style: solid none none; border-color: -moz-use-text-color; border-width: 1pt medium medium; padding: 3pt 0cm 0cm;">
  <p class="MsoNormal"><b><span
 style="font-size: 10pt; font-family: &quot;Tahoma&quot;,&quot;sans-serif&quot;; color: windowtext;"
 lang="EN-US">De&nbsp;:</span></b><span
 style="font-size: 10pt; font-family: &quot;Tahoma&quot;,&quot;sans-serif&quot;; color: windowtext;"
 lang="EN-US">
mblestel [<a moz-do-not-send="true"
 href="mailto:med...@in...">mailto:med...@in...</a>]
  <br>
  <b>Envoy&eacute;&nbsp;:</b> vendredi 11 juin 2010 17:34<br>
  <b>&Agrave;&nbsp;:</b> ELLOUZE Selim RD-CO</span><span
 style="font-size: 10pt; font-family: &quot;Tahoma&quot;,&quot;sans-serif&quot;; color: windowtext;">RE-LAN<br>
  <b>Cc&nbsp;:</b> <a moz-do-not-send="true"
 href="mailto:ope...@li...">ope...@li...</a>;
  <a moz-do-not-send="true" href="mailto:mr...@in...">mr...@in...</a><br>
  <b>Objet&nbsp;:</b> Re: Problem decoding IDR pictures</span><o:p></o:p></p>
  </div>
  </div>
  <p class="MsoNormal">&nbsp;<o:p></o:p></p>
  <p class="MsoNormal"><br>
Hello Selim,<br>
  <br>
First, thank you for using Open SVC Decoder.<br>
  <br>
The problem was due to negative POC, which are authorized in the SVC
standard.<br>
The modifications can be found under the revision 171 of the SVN
repository.<br>
  <br>
Concerning constraints in configuration files, Open SVC Decoder is not
compatible with MGSVector.<br>
These following lines should be removed from configuration files:<br>
MGSVectorMode 1<br>
MGSVector0 4<br>
MGSVector1 4<br>
MGSVector2 8<br>
  <br>
  <br>
Kind regards<br>
  <br>
M&eacute;d&eacute;ric<br>
  <br>
  <a moz-do-not-send="true"
 href="mailto:sel...@or...">sel...@or...</a>
a &eacute;crit&nbsp;: <o:p></o:p></p>
  <p class="MsoNormal"><span lang="EN-US">Hello,</span><o:p></o:p></p>
  <p class="MsoNormal"><span lang="EN-US">&nbsp;</span><o:p></o:p></p>
  <p class="MsoNormal"><span lang="EN-US">I have got some troubles
trying decoding a
sequence with IDR pictures. The SVC stream is decoded properly except
that when
decoding an IDR picture, a sort of comeback occurs. It is like the
stream is
paused, played back and then restarts being decoded properly. However
changing
the spatial resolution is not affected.</span><o:p></o:p></p>
  <p class="MsoNormal"><span lang="EN-US">&nbsp;</span><o:p></o:p></p>
  <p class="MsoNormal"><span lang="EN-US">When I checked the JSVM
encoder output, I
found this stream structure (which I think is the source of the
problem):</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;">AU&nbsp;&nbsp;&nbsp;&nbsp;
0: I&nbsp;&nbsp;&nbsp; T0 L0 Q0&nbsp;&nbsp; QP 34&nbsp;&nbsp; Y 31.2299&nbsp; U
41.3298&nbsp; V 42.2093&nbsp;&nbsp;&nbsp;&nbsp; 13568 bit</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;">AU&nbsp;&nbsp;&nbsp;&nbsp;
0: I&nbsp;&nbsp;&nbsp; T0 L1 Q0&nbsp;&nbsp; QP 34&nbsp;&nbsp; Y 31.1768&nbsp; U
41.8522&nbsp; V 42.5728&nbsp;&nbsp;&nbsp;&nbsp; 55392 bit</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;">AU&nbsp;&nbsp;&nbsp;
-8: P&nbsp;&nbsp;&nbsp; T1 L0 Q0&nbsp;&nbsp; QP 38&nbsp;&nbsp; Y 30.3367&nbsp;
U 41.6256&nbsp; V 42.7728&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 5664 bit</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;">AU&nbsp;&nbsp;&nbsp;
-8: P&nbsp;&nbsp;&nbsp; T1 L1 Q0&nbsp;&nbsp; QP 38&nbsp;&nbsp; Y 30.2618&nbsp;
U 42.3020&nbsp; V 42.4606&nbsp;&nbsp;&nbsp;&nbsp; 34912 bit</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;">AU&nbsp;&nbsp;
-12: P&nbsp;&nbsp;&nbsp; T2 L0 Q0&nbsp;&nbsp; QP 39&nbsp;&nbsp; Y 30.0292&nbsp;
U 41.6095&nbsp; V 42.7954&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3280 bit</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;">AU&nbsp;&nbsp;
-12: P&nbsp;&nbsp;&nbsp; T2 L1 Q0&nbsp;&nbsp; QP 39&nbsp;&nbsp; Y 29.9022&nbsp;
U 42.2241&nbsp; V 42.2924 &nbsp;&nbsp;&nbsp;&nbsp;27568 bit</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;">AU&nbsp;&nbsp;
-14: P&nbsp;&nbsp;&nbsp; T3 L0 Q0&nbsp;&nbsp; QP 40&nbsp;&nbsp; Y 29.7667&nbsp;
U 41.6960&nbsp; V 42.9154&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1440 bit</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;">AU&nbsp;&nbsp;
-14: P&nbsp;&nbsp;&nbsp; T3 L1 Q0&nbsp;&nbsp; QP 40&nbsp;&nbsp; Y 29.2568&nbsp;
U 42.2922&nbsp; V 42.3649&nbsp;&nbsp;&nbsp;&nbsp; 13952 bit</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;">AU&nbsp;&nbsp;
-15: P&nbsp;&nbsp;&nbsp; T4 L0 Q0&nbsp;&nbsp; QP 42&nbsp;&nbsp; Y 29.6208&nbsp;
U 41.6600&nbsp; V 42.9284&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 728 bit</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;">&nbsp;</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;" lang="EN-US">I
suspect the &laquo;&nbsp;- &raquo; ordered pictures to trouble the decoder.</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;" lang="EN-US">Please
find attached the configuration files I used and the encoder output. </span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;" lang="EN-US">&nbsp;</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;" lang="EN-US">I
tested you video_2 sequence and I noticed that we could change spatial
resolution without problems so it should include IDR pictures. I was
wondering
if there are any constraints to include in the JSVM configuration files
in
order to have the stream work properly with Open SVC Decoder.</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;" lang="EN-US">&nbsp;</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;" lang="EN-US">Best
regards,</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;" lang="EN-US">Selim
  </span><o:p></o:p></p>
  <p class="MsoNormal"><span lang="EN-US">&nbsp;</span><o:p></o:p></p>
  <p class="MsoNormal"><span lang="EN-US">&nbsp;</span><o:p></o:p></p>
  <p class="MsoNormal" style="margin-bottom: 12pt;"><span
 style="font-size: 12pt; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;">&nbsp;</span><o:p></o:p></p>
  <div>
  <p class="MsoNormal"><span
 style="font-size: 12pt; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;">--
  </span><o:p></o:p></p>
  <div>
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 style="border: 1pt solid black; width: 450pt;" border="1"
 cellpadding="0" cellspacing="0" width="600">
    <tbody>
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 style="border: medium none ; padding: 0cm; width: 261pt; height: 79.65pt;"
 valign="top" width="348">
        <p class="MsoNormal"
 style="margin: 3.75pt; line-height: 9.75pt;"><b><span
 style="font-size: 8pt; font-family: &quot;Verdana&quot;,&quot;sans-serif&quot;; color: rgb(127, 127, 130);">M&eacute;d&eacute;ric
Blestel</span></b><o:p></o:p></p>
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 style="margin: 3.75pt; line-height: 9.75pt;"><b><span
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 style="margin: 3.75pt; line-height: 9.75pt;"><b><span
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Image</span></b><span
 style="font-size: 8pt; font-family: &quot;Verdana&quot;,&quot;sans-serif&quot;; color: rgb(127, 127, 130);">&nbsp;<br>
        <br>
        <br>
        <br>
        </span><o:p></o:p></p>
        </td>
        <td
 style="border: medium none ; padding: 0cm; width: 189pt; height: 79.65pt;"
 valign="top" width="252">
        <p class="MsoNormal"
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DE RENNES</span></b><o:p></o:p></p>
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AVENUE DES BUTTES DE COESMES</span></b><o:p></o:p></p>
        <p class="MsoNormal"
 style="margin: 3.75pt; text-align: right; line-height: 9.75pt;"
 align="right"><b><span
 style="font-size: 8pt; font-family: &quot;Verdana&quot;,&quot;sans-serif&quot;; color: rgb(127, 127, 130);">CS
70 839</span></b><o:p></o:p></p>
        <p class="MsoNormal"
 style="margin: 3.75pt; text-align: right; line-height: 9.75pt;"
 align="right"><b><span
 style="font-size: 8pt; font-family: &quot;Verdana&quot;,&quot;sans-serif&quot;; color: rgb(127, 127, 130);">35
708 RENNES CEDEX 7</span></b><span
 style="font-size: 8pt; font-family: &quot;Verdana&quot;,&quot;sans-serif&quot;; color: rgb(127, 127, 130);"><br>
        <br>
T&eacute;l : +33 (2) 23 23 85 67</span><o:p></o:p></p>
        </td>
      </tr>
      <tr style="height: 38.25pt;">
        <td
 style="border: medium none ; padding: 0cm; width: 261pt; height: 38.25pt;"
 valign="top" width="348">
        <p class="MsoNormal"><img id="_x0000_i1025"
 src="cid:par...@in..." border="0" height="49"
 width="120"><o:p></o:p></p>
        </td>
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 style="border: medium none ; padding: 0cm; width: 189pt; height: 38.25pt;"
 valign="top" width="252">
        <p class="MsoNormal" style="text-align: right;" align="right"><img
 id="_x0000_i1026" src="cid:par...@in..."
 border="0" height="50" width="120"><o:p></o:p></p>
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      </tr>
    </tbody>
  </table>
  <p class="MsoNormal"><span
 style="font-size: 12pt; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; color: windowtext;">&nbsp;</span><o:p></o:p></p>
  </div>
  </div>
  <pre><o:p>&nbsp;</o:p></pre>
  <pre style="text-align: center;">
<hr align="center" size="4" width="90%">

  </pre>
  <pre><o:p>&nbsp;</o:p></pre>
  <pre>------------------------------------------------------------------------------<o:p></o:p></pre>
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  <pre style="text-align: center;">
<hr align="center" size="4" width="90%">

  </pre>
  <pre><o:p>&nbsp;</o:p></pre>
  <pre>_______________________________________________<o:p></o:p></pre>
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 href="https://lists.sourceforge.net/lists/listinfo/opensvcdecoder-support">https://lists.sourceforge.net/lists/listinfo/opensvcdecoder-support</a><o:p></o:p></pre>
  <pre>&nbsp; <o:p></o:p></pre>
  <p class="MsoNormal" style="margin-bottom: 12pt;"><span
 style="font-size: 12pt; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;"><o:p>&nbsp;</o:p></span></p>
  <div>
  <p class="MsoNormal"><span
 style="font-size: 12pt; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;">--
  <o:p></o:p></span></p>
  <div>
  <table class="MsoNormalTable"
 style="border: 1pt solid black; width: 450pt;" border="1"
 cellpadding="0" cellspacing="0" width="600">
    <tbody>
      <tr style="height: 79.65pt;">
        <td
 style="border: medium none ; padding: 0cm; width: 261pt; height: 79.65pt;"
 valign="top" width="348">
        <p class="MsoNormal"
 style="margin: 3.75pt; line-height: 9.75pt;"><b><span
 style="font-size: 8pt; font-family: &quot;Verdana&quot;,&quot;sans-serif&quot;; color: rgb(127, 127, 130);">M&eacute;d&eacute;ric
Blestel</span></b><o:p></o:p></p>
        <p class="MsoNormal"
 style="margin: 3.75pt; line-height: 9.75pt;"><b><span
 style="font-size: 8pt; font-family: &quot;Verdana&quot;,&quot;sans-serif&quot;; color: rgb(127, 127, 130);">Ing&eacute;nieur
de Recherche / Research Engineer</span></b><span
 style="font-size: 8pt; font-family: &quot;Verdana&quot;,&quot;sans-serif&quot;; color: rgb(127, 127, 130);"><br>
        <br>
        <br>
        </span><o:p></o:p></p>
        <p class="MsoNormal"
 style="margin: 3.75pt; line-height: 9.75pt;"><b><span
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Image</span></b><span
 style="font-size: 8pt; font-family: &quot;Verdana&quot;,&quot;sans-serif&quot;; color: rgb(127, 127, 130);">&nbsp;<br>
        <br>
        <br>
        </span><o:p></o:p></p>
        </td>
        <td
 style="border: medium none ; padding: 0cm; width: 189pt; height: 79.65pt;"
 valign="top" width="252">
        <p class="MsoNormal"
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DE RENNES</span></b><o:p></o:p></p>
        <p class="MsoNormal"
 style="margin: 3.75pt; text-align: right; line-height: 9.75pt;"
 align="right"><b><span
 style="font-size: 8pt; font-family: &quot;Verdana&quot;,&quot;sans-serif&quot;; color: rgb(127, 127, 130);">20
AVENUE DES BUTTES DE COESMES</span></b><o:p></o:p></p>
        <p class="MsoNormal"
 style="margin: 3.75pt; text-align: right; line-height: 9.75pt;"
 align="right"><b><span
 style="font-size: 8pt; font-family: &quot;Verdana&quot;,&quot;sans-serif&quot;; color: rgb(127, 127, 130);">CS
70 839</span></b><o:p></o:p></p>
        <p class="MsoNormal"
 style="margin: 3.75pt; text-align: right; line-height: 9.75pt;"
 align="right"><b><span
 style="font-size: 8pt; font-family: &quot;Verdana&quot;,&quot;sans-serif&quot;; color: rgb(127, 127, 130);">35
708 RENNES CEDEX 7</span></b><span
 style="font-size: 8pt; font-family: &quot;Verdana&quot;,&quot;sans-serif&quot;; color: rgb(127, 127, 130);"><br>
        <br>
T&eacute;l : +33 (2) 23 23 85 67</span><o:p></o:p></p>
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      <tr style="height: 38.25pt;">
        <td
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 valign="top" width="348">
        <p class="MsoNormal"><img id="_x0000_i1029"
 src="cid:par...@in..." border="0" height="49"
 width="120"><o:p></o:p></p>
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 style="border: medium none ; padding: 0cm; width: 189pt; height: 38.25pt;"
 valign="top" width="252">
        <p class="MsoNormal" style="text-align: right;" align="right"><img
 id="_x0000_i1030" src="cid:par...@in..."
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    </tbody>
  </table>
  <p class="MsoNormal"><span
 style="font-size: 12pt; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; color: windowtext;"><o:p>&nbsp;</o:p></span></p>
  </div>
  </div>
  </div>
</blockquote>
<br>
<br>
<div class="moz-signature">-- <br>
<title></title>
<div class="moz-signature">
<table class="MsoNormalTable"
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      <p class="MsoNormal" style="margin: 3.75pt; line-height: 9.75pt;"><b><span
 style="font-size: 8pt; font-family: Verdana; color: rgb(127, 127, 130);">M&eacute;d&eacute;ric
Blestel<o:p></o:p></span></b></p>
      <p class="MsoNormal" style="margin: 3.75pt; line-height: 9.75pt;"><b><span
 style="font-size: 8pt; font-family: Verdana; color: rgb(127, 127, 130);">Ing&eacute;nieur
de Recherche / Research Engineer</span></b><span
 style="font-size: 8pt; font-family: Verdana; color: rgb(127, 127, 130);"><br
 style="">
      <br style="">
      <o:p></o:p></span></p>
      <p class="MsoNormal" style="margin: 3.75pt; line-height: 9.75pt;"><b><span
 style="font-size: 8pt; font-family: Verdana; color: rgb(127, 127, 130);">IETR/Groupe
Image</span></b><span
 style="font-size: 8pt; font-family: Verdana; color: rgb(127, 127, 130);">&nbsp;<br
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      <b><o:p></o:p></b></span></p>
      </td>
      <td
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 valign="top" width="252">
      <p class="MsoNormal"
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      <p class="MsoNormal"
 style="margin: 3.75pt; text-align: right; line-height: 9.75pt;"
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 style="font-size: 8pt; font-family: Verdana; color: rgb(127, 127, 130);">CS
70 839<o:p></o:p></span></b></p>
      <p class="MsoNormal"
 style="margin: 3.75pt; text-align: right; line-height: 9.75pt;"
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 style="font-size: 8pt; font-family: Verdana; color: rgb(127, 127, 130);">35
708 RENNES CEDEX 7</span></b><span
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    </tr>
    <tr style="height: 38.25pt;">
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 valign="top" width="348">
      <p class="MsoNormal" style=""><!--[if gte vml 1]><v:shapetype
   id="_x0000_t75" coordsize="21600,21600" o:spt="75" o:preferrelative="t"
   path="m@4@5l@4@11@9@11@9@5xe" filled="f" stroked="f">
   <v:stroke joinstyle="miter"/>
   <v:formulas>
    <v:f eqn="if lineDrawn pixelLineWidth 0"/>
    <v:f eqn="sum @0 1 0"/>
    <v:f eqn="sum 0 0 @1"/>
    <v:f eqn="prod @2 1 2"/>
    <v:f eqn="prod @3 21600 pixelWidth"/>
    <v:f eqn="prod @3 21600 pixelHeight"/>
    <v:f eqn="sum @0 0 1"/>
    <v:f eqn="prod @6 1 2"/>
    <v:f eqn="prod @7 21600 pixelWidth"/>
    <v:f eqn="sum @8 21600 0"/>
    <v:f eqn="prod @7 21600 pixelHeight"/>
    <v:f eqn="sum @10 21600 0"/>
   </v:formulas>
   <v:path o:extrusionok="f" gradientshapeok="t" o:connecttype="rect"/>
   <o:lock v:ext="edit" aspectratio="t"/>
  </v:shapetype><v:shape id="_x0000_i1025" type="#_x0000_t75" style='width:90pt;
   height:36.75pt'>
   <v:imagedata src="file:///D:/Documents/Sign/ietr.gif"
    o:title="ietr"/>
  </v:
shape><![endif]--><img
 alt="" src="cid:par...@in..."
 v:shapes="_x0000_i1025" height="49" width="120"><o:p></o:p></p>
      </td>
      <td
 style="border: medium none ; padding: 0cm; width: 189pt; height: 38.25pt;"
 valign="top" width="252">
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    o:title="logoInsa"/>
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 alt="" src="cid:par...@in..."
 v:shapes="_x0000_i1026" height="50" width="120"><o:p></o:p></p>
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Re: [Opensvcdecoder-support] Problem decoding IDR pictures

[mblestel <med...@in...>]

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Hello Selim,<br>
<br>
I know that I have problems with MGS case, but it depends of the
encoding parameters.<br>
For example, the decoder is compatible with the following stream
(SVCBMT-13.264)&nbsp; which is part from the conformance testing of the SVC
standard.<br>
This stream has three layers, DqId equals to 0, 1 or 2.<br>
<br>
I have also several others streams with different configurations in
which MGS layers have dependency_id different from 0. And the decoder
is able to decode correctly these streams.<br>
<br>
If you can provide me streams and configuration files for the case
where OpenSVCDecoder is not compatible with.<br>
<br>
Kind regards<br>
<br>
M&eacute;d&eacute;ric<br>
<br>
<br>
<br>
<a class="moz-txt-link-abbreviated" href="mailto:sel...@or...">sel...@or...</a> a &eacute;crit&nbsp;:
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  <div class="WordSection1">
  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);">Hello
again,<o:p></o:p></span></p>
  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);"><o:p>&nbsp;</o:p></span></p>
  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);"
 lang="EN-US">Reporting on MGS case:
I have tested some scenarios and I noticed that MGS is fine only with
one layer
on top of the base layer, i.e L0Q0 &#8211; L0Q1 works. I have also test
L0Q0-L0Q1-L1Q0
and it works fine. However these cases are not supported by the OpenSVC
Decoder:<o:p></o:p></span></p>
  <p class="MsoListParagraph" style="text-indent: -18pt;"><!--[if !supportLists]--><span
 style="color: rgb(31, 73, 125);" lang="EN-US"><span style="">1.<span
 style="font-family: &quot;Times New Roman&quot;; font-style: normal; font-variant: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-size-adjust: none; font-stretch: normal;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
  </span></span></span><!--[endif]--><span dir="ltr"></span><span
 style="color: rgb(31, 73, 125);" lang="EN-US">More than one MGS Layer
on top of the base layer<o:p></o:p></span></p>
  <p class="MsoListParagraph" style="text-indent: -18pt;"><!--[if !supportLists]--><span
 style="color: rgb(31, 73, 125);" lang="EN-US"><span style="">2.<span
 style="font-family: &quot;Times New Roman&quot;; font-style: normal; font-variant: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-size-adjust: none; font-stretch: normal;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
  </span></span></span><!--[endif]--><span dir="ltr"></span><span
 style="color: rgb(31, 73, 125);" lang="EN-US">Any MGS layer with L
&gt;
0<o:p></o:p></span></p>
  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);"
 lang="EN-US">That means the only
case it works Q=1 and L=0. <o:p></o:p></span></p>
  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);"
 lang="EN-US">I hope this could
help any future work on this issue.<o:p></o:p></span></p>
  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);"
 lang="EN-US"><o:p>&nbsp;</o:p></span></p>
  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);"
 lang="EN-US">Best regards,<o:p></o:p></span></p>
  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);"
 lang="EN-US">Selim &nbsp;&nbsp;<o:p></o:p></span></p>
  <p class="MsoNormal"><span style="color: rgb(31, 73, 125);"
 lang="EN-US"><o:p>&nbsp;</o:p></span></p>
  <div>
  <div
 style="border-style: solid none none; border-color: rgb(181, 196, 223) -moz-use-text-color -moz-use-text-color; border-width: 1pt medium medium; padding: 3pt 0cm 0cm;">
  <p class="MsoNormal"><b><span
 style="font-size: 10pt; font-family: &quot;Tahoma&quot;,&quot;sans-serif&quot;; color: windowtext;"
 lang="EN-US">De&nbsp;:</span></b><span
 style="font-size: 10pt; font-family: &quot;Tahoma&quot;,&quot;sans-serif&quot;; color: windowtext;"
 lang="EN-US">
mblestel [<a class="moz-txt-link-freetext" href="mailto:med...@in...">mailto:med...@in...</a>] <br>
  <b>Envoy&eacute;&nbsp;:</b> vendredi 11 juin 2010 17:34<br>
  <b>&Agrave;&nbsp;:</b> ELLOUZE Selim RD-CO</span><span
 style="font-size: 10pt; font-family: &quot;Tahoma&quot;,&quot;sans-serif&quot;; color: windowtext;">RE-LAN<br>
  <b>Cc&nbsp;:</b> <a class="moz-txt-link-abbreviated" href="mailto:ope...@li...">ope...@li...</a>;
<a class="moz-txt-link-abbreviated" href="mailto:mr...@in...">mr...@in...</a><br>
  <b>Objet&nbsp;:</b> Re: Problem decoding IDR pictures<o:p></o:p></span></p>
  </div>
  </div>
  <p class="MsoNormal"><o:p>&nbsp;</o:p></p>
  <p class="MsoNormal"><br>
Hello Selim,<br>
  <br>
First, thank you for using Open SVC Decoder.<br>
  <br>
The problem was due to negative POC, which are authorized in the SVC
standard.<br>
The modifications can be found under the revision 171 of the SVN
repository.<br>
  <br>
Concerning constraints in configuration files, Open SVC Decoder is not
compatible with MGSVector.<br>
These following lines should be removed from configuration files:<br>
MGSVectorMode 1<br>
MGSVector0 4<br>
MGSVector1 4<br>
MGSVector2 8<br>
  <br>
  <br>
Kind regards<br>
  <br>
M&eacute;d&eacute;ric<br>
  <br>
  <a moz-do-not-send="true"
 href="mailto:sel...@or...">sel...@or...</a>
a &eacute;crit&nbsp;: <o:p></o:p></p>
  <p class="MsoNormal"><span lang="EN-US">Hello,</span><o:p></o:p></p>
  <p class="MsoNormal"><span lang="EN-US">&nbsp;</span><o:p></o:p></p>
  <p class="MsoNormal"><span lang="EN-US">I have got some troubles
trying decoding a
sequence with IDR pictures. The SVC stream is decoded properly except
that when
decoding an IDR picture, a sort of comeback occurs. It is like the
stream is
paused, played back and then restarts being decoded properly. However
changing
the spatial resolution is not affected.</span><o:p></o:p></p>
  <p class="MsoNormal"><span lang="EN-US">&nbsp;</span><o:p></o:p></p>
  <p class="MsoNormal"><span lang="EN-US">When I checked the JSVM
encoder output, I found
this stream structure (which I think is the source of the problem):</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;">AU&nbsp;&nbsp;&nbsp;&nbsp;
0: I&nbsp;&nbsp;&nbsp; T0 L0 Q0&nbsp;&nbsp; QP 34&nbsp;&nbsp; Y 31.2299&nbsp; U
41.3298&nbsp; V 42.2093&nbsp;&nbsp;&nbsp;&nbsp; 13568 bit</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;">AU&nbsp;&nbsp;&nbsp;&nbsp;
0: I&nbsp;&nbsp;&nbsp; T0 L1 Q0&nbsp;&nbsp; QP 34&nbsp;&nbsp; Y 31.1768&nbsp; U
41.8522&nbsp; V 42.5728&nbsp;&nbsp;&nbsp;&nbsp; 55392 bit</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;">AU&nbsp;&nbsp;&nbsp;
-8: P&nbsp;&nbsp;&nbsp; T1 L0 Q0&nbsp;&nbsp; QP 38&nbsp;&nbsp; Y 30.3367&nbsp;
U 41.6256&nbsp; V 42.7728&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 5664 bit</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;">AU&nbsp;&nbsp;&nbsp;
-8: P&nbsp;&nbsp;&nbsp; T1 L1 Q0&nbsp;&nbsp; QP 38&nbsp;&nbsp; Y 30.2618&nbsp;
U 42.3020&nbsp; V 42.4606&nbsp;&nbsp;&nbsp;&nbsp; 34912 bit</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;">AU&nbsp;&nbsp;
-12: P&nbsp;&nbsp;&nbsp; T2 L0 Q0&nbsp;&nbsp; QP 39&nbsp;&nbsp; Y 30.0292&nbsp;
U 41.6095&nbsp; V 42.7954&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3280 bit</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;">AU&nbsp;&nbsp;
-12: P&nbsp;&nbsp;&nbsp; T2 L1 Q0&nbsp;&nbsp; QP 39&nbsp;&nbsp; Y 29.9022&nbsp;
U 42.2241&nbsp; V 42.2924 &nbsp;&nbsp;&nbsp;&nbsp;27568 bit</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;">AU&nbsp;&nbsp;
-14: P&nbsp;&nbsp;&nbsp; T3 L0 Q0&nbsp;&nbsp; QP 40&nbsp;&nbsp; Y 29.7667&nbsp;
U 41.6960&nbsp; V 42.9154&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1440 bit</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;">AU&nbsp;&nbsp;
-14: P&nbsp;&nbsp;&nbsp; T3 L1 Q0&nbsp;&nbsp; QP 40&nbsp;&nbsp; Y 29.2568&nbsp;
U 42.2922&nbsp; V 42.3649&nbsp;&nbsp;&nbsp;&nbsp; 13952 bit</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;">AU&nbsp;&nbsp;
-15: P&nbsp;&nbsp;&nbsp; T4 L0 Q0&nbsp;&nbsp; QP 42&nbsp;&nbsp; Y 29.6208&nbsp;
U 41.6600&nbsp; V 42.9284&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 728 bit</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;">&nbsp;</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;" lang="EN-US">I
suspect the &laquo;&nbsp;- &raquo; ordered pictures to trouble the decoder.</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;" lang="EN-US">Please
find attached the configuration files I used and the encoder output. </span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;" lang="EN-US">&nbsp;</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;" lang="EN-US">I
tested you video_2 sequence and I noticed that we could change spatial
resolution without problems so it should include IDR pictures. I was
wondering
if there are any constraints to include in the JSVM configuration files
in
order to have the stream work properly with Open SVC Decoder.</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;" lang="EN-US">&nbsp;</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;" lang="EN-US">Best
regards,</span><o:p></o:p></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;" lang="EN-US">Selim
  </span><o:p></o:p></p>
  <p class="MsoNormal"><span lang="EN-US">&nbsp;</span><o:p></o:p></p>
  <p class="MsoNormal"><span lang="EN-US">&nbsp;</span><o:p></o:p></p>
  <p class="MsoNormal" style="margin-bottom: 12pt;"><span
 style="font-size: 12pt; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;"><o:p>&nbsp;</o:p></span></p>
  <div>
  <p class="MsoNormal"><span
 style="font-size: 12pt; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;">--
  <o:p></o:p></span></p>
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        <p class="MsoNormal"
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Image</span></b><span
 style="font-size: 8pt; font-family: &quot;Verdana&quot;,&quot;sans-serif&quot;; color: rgb(127, 127, 130);">&nbsp;<br>
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        <br>
T&eacute;l : +33 (2) 23 23 85 67</span><o:p></o:p></p>
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DE RENNES<o:p></o:p></span></b></p>
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AVENUE DES BUTTES DE COESMES<o:p></o:p></span></b></p>
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70 839<o:p></o:p></span></b></p>
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708 RENNES CEDEX 7</span></b><span
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T&eacute;l : +33 (2) 23 23 85 67<o:p></o:p></span></p>
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Re: [Opensvcdecoder-support] Problem decoding IDR pictures

[mblestel <med...@in...>]

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<br>
Hello Selim,<br>
<br>
First, thank you for using Open SVC Decoder.<br>
<br>
The problem was due to negative POC, which are authorized in the SVC
standard.<br>
The modifications can be found under the revision 171 of the SVN
repository.<br>
<br>
Concerning constraints in configuration files, Open SVC Decoder is not
compatible with MGSVector.<br>
These following lines should be removed from configuration files:<br>
MGSVectorMode 1<br>
<span class="moz-txt-citetags"></span>MGSVector0 4<br>
<span class="moz-txt-citetags"></span>MGSVector1 4<br>
<span class="moz-txt-citetags"></span>MGSVector2 8<br>
<br>
<br>
Kind regards<br>
<br>
M&eacute;d&eacute;ric<br>
<br>
<a class="moz-txt-link-abbreviated" href="mailto:sel...@or...">sel...@or...</a> a &eacute;crit&nbsp;:
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  <p class="MsoNormal"><span lang="EN-US">Hello,<o:p></o:p></span></p>
  <p class="MsoNormal"><span lang="EN-US"><o:p>&nbsp;</o:p></span></p>
  <p class="MsoNormal"><span lang="EN-US">I have got some troubles
trying decoding a
sequence with IDR pictures. The SVC stream is decoded properly except
that when
decoding an IDR picture, a sort of comeback occurs. It is like the
stream is
paused, played back and then restarts being decoded properly. However
changing
the spatial resolution is not affected.<o:p></o:p></span></p>
  <p class="MsoNormal"><span lang="EN-US"><o:p>&nbsp;</o:p></span></p>
  <p class="MsoNormal"><span lang="EN-US">When I checked the JSVM
encoder output, I
found this stream structure (which I think is the source of the
problem):<o:p></o:p></span></p>
  <p class="MsoNormal" style=""><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;">AU&nbsp;&nbsp;&nbsp;&nbsp; 0: I&nbsp;&nbsp;&nbsp; T0
L0 Q0&nbsp;&nbsp; QP 34&nbsp;&nbsp; Y 31.2299&nbsp; U 41.3298&nbsp; V
42.2093&nbsp;&nbsp;&nbsp;&nbsp; 13568 bit<o:p></o:p></span></p>
  <p class="MsoNormal" style=""><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;">AU&nbsp;&nbsp;&nbsp;&nbsp; 0: I&nbsp;&nbsp;&nbsp; T0
L1 Q0&nbsp;&nbsp; QP 34&nbsp;&nbsp; Y 31.1768&nbsp; U 41.8522&nbsp; V
42.5728&nbsp;&nbsp;&nbsp;&nbsp; 55392 bit<o:p></o:p></span></p>
  <p class="MsoNormal" style=""><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;">AU&nbsp;&nbsp;&nbsp; -8: P&nbsp;&nbsp;&nbsp; T1
L0
Q0&nbsp;&nbsp; QP 38&nbsp;&nbsp; Y 30.3367&nbsp; U 41.6256&nbsp; V
42.7728&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 5664 bit<o:p></o:p></span></p>
  <p class="MsoNormal" style=""><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;">AU&nbsp;&nbsp;&nbsp; -8: P&nbsp;&nbsp;&nbsp; T1
L1
Q0&nbsp;&nbsp; QP 38&nbsp;&nbsp; Y 30.2618&nbsp; U 42.3020&nbsp; V
42.4606&nbsp;&nbsp;&nbsp;&nbsp; 34912 bit<o:p></o:p></span></p>
  <p class="MsoNormal" style=""><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;">AU&nbsp;&nbsp; -12: P&nbsp;&nbsp;&nbsp; T2
L0
Q0&nbsp;&nbsp; QP 39&nbsp;&nbsp; Y 30.0292&nbsp; U 41.6095&nbsp; V
42.7954&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3280 bit<o:p></o:p></span></p>
  <p class="MsoNormal" style=""><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;">AU&nbsp;&nbsp; -12: P&nbsp;&nbsp;&nbsp; T2
L1
Q0&nbsp;&nbsp; QP 39&nbsp;&nbsp; Y 29.9022&nbsp; U 42.2241&nbsp; V 42.2924 &nbsp;&nbsp;&nbsp;&nbsp;27568
bit<o:p></o:p></span></p>
  <p class="MsoNormal" style=""><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;">AU&nbsp;&nbsp; -14: P&nbsp;&nbsp;&nbsp; T3
L0
Q0&nbsp;&nbsp; QP 40&nbsp;&nbsp; Y 29.7667&nbsp; U 41.6960&nbsp; V
42.9154&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1440 bit<o:p></o:p></span></p>
  <p class="MsoNormal" style=""><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;">AU&nbsp;&nbsp; -14: P&nbsp;&nbsp;&nbsp; T3
L1
Q0&nbsp;&nbsp; QP 40&nbsp;&nbsp; Y 29.2568&nbsp; U 42.2922&nbsp; V
42.3649&nbsp;&nbsp;&nbsp;&nbsp; 13952 bit<o:p></o:p></span></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;">AU&nbsp;&nbsp;
-15: P&nbsp;&nbsp;&nbsp; T4 L0 Q0&nbsp;&nbsp; QP 42&nbsp;&nbsp; Y 29.6208&nbsp;
U 41.6600&nbsp; V 42.9284&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 728 bit<o:p></o:p></span></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;"><o:p>&nbsp;</o:p></span></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;" lang="EN-US">I
suspect the &laquo;&nbsp;- &raquo; ordered pictures to trouble the decoder.<o:p></o:p></span></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;" lang="EN-US">Please
find attached the configuration files I used and the encoder output. <o:p></o:p></span></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;" lang="EN-US"><o:p>&nbsp;</o:p></span></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;" lang="EN-US">I
tested you video_2 sequence and I noticed that we could change spatial
resolution without problems so it should include IDR pictures. I was
wondering
if there are any constraints to include in the JSVM configuration files
in
order to have the stream work properly with Open SVC Decoder.<o:p></o:p></span></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;" lang="EN-US"><o:p>&nbsp;</o:p></span></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;" lang="EN-US">Best
regards,<o:p></o:p></span></p>
  <p class="MsoNormal"><span
 style="font-size: 10pt; font-family: &quot;Courier New&quot;;" lang="EN-US">Selim
  </span><span lang="EN-US"><o:p></o:p></span></p>
  <p class="MsoNormal"><span lang="EN-US"><o:p>&nbsp;</o:p></span></p>
  <p class="MsoNormal"><span lang="EN-US">&nbsp;<o:p></o:p></span></p>
  </div>
</blockquote>
<br>
<br>
<div class="moz-signature">-- <br>
<title></title>
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      <p class="MsoNormal" style="margin: 3.75pt; line-height: 9.75pt;"><b><span
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Blestel<o:p></o:p></span></b></p>
      <p class="MsoNormal" style="margin: 3.75pt; line-height: 9.75pt;"><b><span
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DE RENNES<o:p></o:p></span></b></p>
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 align="right"><b><span
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AVENUE DES BUTTES DE COESMES<o:p></o:p></span></b></p>
      <p class="MsoNormal"
 style="margin: 3.75pt; text-align: right; line-height: 9.75pt;"
 align="right"><b><span
 style="font-size: 8pt; font-family: Verdana; color: rgb(127, 127, 130);">CS
70 839<o:p></o:p></span></b></p>
      <p class="MsoNormal"
 style="margin: 3.75pt; text-align: right; line-height: 9.75pt;"
 align="right"><b><span
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708 RENNES CEDEX 7</span></b><span
 style="font-size: 8pt; font-family: Verdana; color: rgb(127, 127, 130);"><br>
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T&eacute;l : +33 (2) 23 23 85 67<o:p></o:p></span></p>
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Re: [Opensvcdecoder-support] request for MP4Box source code

[M. R. <mr...@in...>]

Hi sandeep,

Of course yes!  we will add the source code for SVC support under MP4 box in the download section of Opensvcdecoder.

Mickaël


Le 4 juin 2010 à 20:28, Sandeep Chauhan a écrit :

> Hi,
> 
> I used the MP4Box exe that you provide under additional tools. And that MP4Box seems to support SVC in a much better way than the latest available source code of MP4Box. 
> 
> But the SDP generated has some issues:
> 
> 1) H264 should be H264-SVC on a=rtpmap line as per the SVC spec.
> 2) sprop-scalability-info parameter is not populated at all.
> 
> I wanted to make changes to fix these issues. I think you guys made some changes to MP4Box source code which have not yet been checked in back to their main branch. Can I get the MP4Box source code that you have ? I will be really thankful.
> 
> -- 
> -Sandeep
> ------------------------------------------------------------------------------
> ThinkGeek and WIRED's GeekDad team up for the Ultimate 
> GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the 
> lucky parental unit.  See the prize list and enter to win: 
> http://p.sf.net/sfu/thinkgeek-promo_______________________________________________
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> https://lists.sourceforge.net/lists/listinfo/opensvcdecoder-support

[Opensvcdecoder-support] request for MP4Box source code

[Sandeep C. <san...@gm...>]

Hi,

I used the MP4Box exe that you provide under additional tools. And that
MP4Box seems to support SVC in a much better way than the latest available
source code of MP4Box.

But the SDP generated has some issues:

1) H264 should be H264-SVC on a=rtpmap line as per the SVC spec.
2) sprop-scalability-info parameter is not populated at all.

I wanted to make changes to fix these issues. I think you guys made some
changes to MP4Box source code which have not yet been checked in back to
their main branch. Can I get the MP4Box source code that you have ? I will
be really thankful.

-- 
-Sandeep

[Opensvcdecoder-support] compile fails

[M. R. <mr...@in...>]

Hi peter,

 

This has been corrected in rev 136. 

 

Best regards,

 

Mickaël

 

 

Hi,

 

SVN rev 134 fails to compile on Linux; the file slice_data_cabac.h is with 

lowercase s, but it is included with uppercase s; same for slice_header.h

 

the file name is AVCdisplay.h, but slice_header.c includes AVCDisplay.h 

(with uppercase D)

 

regards, p.

 

-- 

 

Peter Meerwald

Kaigasse 3 / 8

A-5020 Salzburg / AUSTRIA

(mobile)