Re: [Opensvcdecoder-support] SNR and spacial scaling not workig in OSVCD using my SVC videos

[Yahia B. <yah...@gm...>]

Hello all,

I'm  still not able to switch between SNR and spacial layers using osvcd.

To find what is wrong with my videos, I tried to debug calls to
switch_layer() function which is responsible to switch layer on IDR frame
but i noticed that this function is never called even when  SNR and spacial
layers switching works correctly  (Using videos in
http://sourceforge.net/projects/opensvcdecoder/files/Video%20Streams/).

Thanks for your help.

Yahia





2013/4/29 Yahia Benmoussa <yah...@gm...>

> but it is still not working
>
>
> 2013/4/29 Yahia Benmoussa <yah...@gm...>
>
>> Hi Médéric,
>>
>> I checked the log files when coding SVC videos and it seems the IDR
>> frames are inserted periodically.
>>
>> Thanks.
>> Yahia
>>
>>
>> 2013/4/29 Yahia Benmoussa <yah...@gm...>
>>
>>> Hi médéric,
>>>
>>>
>>> I think yes. I set IntraPeriod   parameter to 32 which means JSVM
>>> encoder inserts 1 IDR each 32 frames. Is this correct ?
>>>
>>> Thanks.
>>> Yahia
>>>
>>>
>>> 2013/4/29 Médéric Blestel <mbl...@gm...>
>>>
>>>> Hi,
>>>>
>>>> Switching of spatial or quality layer is only occuring on IDR frames.
>>>> Does your stream contain IDR frames?
>>>>
>>>>
>>>> Médéric
>>>>
>>>>
>>>>
>>>> 2013/4/29 Yahia Benmoussa <yah...@gm...>
>>>>
>>>>> Hi all,
>>>>>
>>>>> I've coded  SVC videos using JSVM but OSVCD is not able to switch to
>>>>> the contained  spacial and SNR layers. The switching to temporal layer
>>>>> works fine.
>>>>>
>>>>> The SNR and the spacial scalability works fine when using the test
>>>>> sequences in (
>>>>> http://sourceforge.net/projects/opensvcdecoder/files/Video%20Streams/
>>>>> ).
>>>>>
>>>>> Some parameters may be wrong in my JSVM configuration files. Here an
>>>>> example of a SNR scalability in my SVC file.
>>>>>
>>>>>
>>>>> JSVM 9.19.15 BitStream Extractor
>>>>> Contained Layers:
>>>>> ====================
>>>>>
>>>>>        Layer   Resolution   Framerate   Bitrate MinBitrate      DTQ
>>>>>          0     352x288       1.8750     219.20      219.20   (0,0,0)
>>>>>          1     352x288       3.7500     238.30      238.30   (0,1,0)
>>>>>          2     352x288       7.5000     264.90      264.90   (0,2,0)
>>>>>          3     352x288      15.0000     293.70     293.70   (0,3,0)
>>>>>          4     352x288      30.0000     320.10     320.10   (0,4,0)
>>>>>          5     352x288       1.8750    1072.20
>>>>> (0,0,1)
>>>>>          6     352x288       3.7500    1492.20
>>>>> (0,1,1)
>>>>>          7     352x288       7.5000    2215.00
>>>>> (0,2,1)
>>>>>          8     352x288      15.0000    3401.00
>>>>> (0,3,1)
>>>>>          9     352x288      30.0000    5019.00
>>>>> (0,4,1)
>>>>>
>>>>>
>>>>> The used configuration files are :
>>>>>
>>>>>  *main.cfg :*
>>>>>
>>>>> OutputFile              mobile.264   # Bitstream file
>>>>> FrameRate               30.0       # Maximum frame rate [Hz]
>>>>> FramesToBeEncoded       300      # Number of frames (at input frame
>>>>> rate)
>>>>> GOPSize                 16        # GOP Size (at maximum frame rate)
>>>>> BaseLayerMode           1          # Base layer mode (0,1: AVC
>>>>> compatible,
>>>>> IntraPeriod             32                      #
>>>>> 2: AVC w subseq SEI)
>>>>> NumberReferenceFrames   8
>>>>> LoopFilterDisable       1
>>>>> InterLayerLoopFilterDisable 1
>>>>> CgsSnrRefinement        1          # SNR refinement as 1: MGS; 0: CGS
>>>>> EncodeKeyPictures       1          # Key pics at T=0 (0:none, 1:MGS,
>>>>> 2:all)
>>>>> #MGSControl              2          # ME/MC for non-key pictures in
>>>>> MGS layers
>>>>>                                    # (0:std, 1:ME with EL, 2:ME+MC
>>>>> with EL)
>>>>> SearchMode              4          # Search mode (0:BlockSearch,
>>>>> 4:FastSearch)
>>>>> SearchRange             32         # Search range (Full Pel)
>>>>> NumLayers               2          # Number of layers
>>>>> LayerCfg                layer0.cfg # Layer configuration file
>>>>> LayerCfg                layer1.cfg # Layer configuration file
>>>>>
>>>>> *layer0.cfg : *
>>>>>
>>>>> InputFile            ../mobile.cif.yuv  # Input  file
>>>>> SourceWidth          352            # Input  frame width
>>>>> SourceHeight         288            # Input  frame height
>>>>> FrameRateIn          30             # Input  frame rate [Hz]
>>>>> FrameRateOut         30             # Output frame rate [Hz]
>>>>> MGSVectorMode        0              # MGS vector usage selection
>>>>>
>>>>> *layer1.cfg*
>>>>>
>>>>> InputFile            ../mobile.cif.yuv  # Input  file
>>>>> SourceWidth          352            # Input  frame width
>>>>> SourceHeight         288            # Input  frame height
>>>>> FrameRateIn          30             # Input  frame rate [Hz]
>>>>> FrameRateOut         30             # Output frame rate [Hz]
>>>>> InterLayerPred       1              # Inter-layer Prediction (0: no,
>>>>> 1: yes, 2:adaptive)
>>>>> MGSVectorMode        0              # MGS vector usage selection
>>>>>
>>>>> Thanks in advance.
>>>>>
>>>>> Yahia
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
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>>>>
>>>
>>
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