[FFmpeg-trac] #479(undetermined:new): AVStream.start_time incorrect for Sony XDCAM-EX files

[Baptiste Coudurier]

On 09/22/2011 10:56 AM, FFmpeg wrote:
> #479: AVStream.start_time incorrect for Sony XDCAM-EX files
> -------------------------------------+-------------------------------------
>              Reporter:  rmk          |                    Owner:
>                  Type:  defect       |                   Status:  new
>              Priority:  normal       |                Component:
>               Version:  unspecified  |  undetermined
>              Keywords:               |               Resolution:
>              Blocking:               |               Blocked By:
> Analyzed by developer:  0            |  Reproduced by developer:  0
> -------------------------------------+-------------------------------------
> 
> Comment (by rmk):
> 
>  The initial GOP header has closed_gop=1 and broken_link=0 (spec section
>  6.3.8, debug output: GOP ( 0:00:00.[00]) closed_gop=1 broken_link=0).
>  Together with the fact that the initial B-frames decode fine, I tend to
>  believe that the stream is valid and ffmpeg treats the case incorrectly
>  assuming I do not misunderstand the semantics of AVStream.start_time. If
>  that is correct the warning
>  [mpeg2video @ 0x10106f400] warning: first frame is no keyframe
>  probably should not be triggered in this case either.
> 

It's in presentation order so it's correct.
And the warning is bogus.

-- 
Baptiste COUDURIER
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