[FFmpeg-devel] [PATCH] lavf: inspect more frames when the time base is unreliable

[Reimar Döffinger]

On Sat, Jan 29, 2011 at 01:41:15PM +0000, M?ns Rullg?rd wrote:
> Anssi Hannula <anssi.hannula at iki.fi> writes:
> 
> > On 29.01.2011 06:45, M?ns Rullg?rd wrote:
> >> Anssi Hannula <anssi.hannula at iki.fi> writes:
> >> 
> >>> 23.976 fps H.264 Matroska files are usually detected as 24 fps
> >>> (r_frame_rate) by av_find_stream_info(). Fix that by inspecting the
> >>> timestamps of 30 frames instead of just 20 for video codecs with
> >>> unreliable time base.
> >> 
> >> In my experience most matroska files have correct timing information
> >> in the headers.  It sounds me more like the "clever" estimation code
> >> is hallucinating inaccuracies where none exist.
> >
> > Yes, the timing information is correct in the headers.
> >
> > The timing estimation code is triggered simply because codec_id ==
> > CODEC_ID_H264,
> 
> So remove that ugly hack, and all will be fine.

I expect that to break PAFF.