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

[Yahia B. <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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>>
>