[FFmpeg-devel] [PATCH] Enable parser in FLV demuxer for H264 codec

[Alex Sukhanov]

On Thu, Dec 12, 2013 at 6:09 PM, Michael Niedermayer <michaelni at gmx.at>wrote:

> On Thu, Dec 12, 2013 at 03:10:10PM -0800, Alex Sukhanov wrote:
> > ---
> >  libavformat/flvdec.c | 1 +
> >  1 file changed, 1 insertion(+)
> >
> > diff --git a/libavformat/flvdec.c b/libavformat/flvdec.c
> > index 1024001..4401652 100644
> > --- a/libavformat/flvdec.c
> > +++ b/libavformat/flvdec.c
> > @@ -256,6 +256,7 @@ static int flv_set_video_codec(AVFormatContext *s,
> AVStream *vstream,
> >          return 1;     // 1 byte body size adjustment for
> flv_read_packet()
> >      case FLV_CODECID_H264:
> >          vcodec->codec_id = AV_CODEC_ID_H264;
> > +        vstream->need_parsing = AVSTREAM_PARSE_HEADERS;
> >          return 3;     // not 4, reading packet type will consume one
> byte
> >      case FLV_CODECID_MPEG4:
> >          vcodec->codec_id = AV_CODEC_ID_MPEG4;
>
> breaks
> ffmpeg -i Enigma_Principles_of_Lust.flv test.flv
>
> before the patch:
> frame= 6300 fps=1441 q=31.0 Lsize=    7266kB time=00:03:30.65 bitrate=
> 282.6kbits/s
> after the patch
> frame= 4531 fps=1180 q=9.8 Lsize=    6987kB time=00:03:30.65 bitrate=
> 271.7kbits/s dup=0 drop=1769
>
> [....]
>
> --
> Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
>
> The misfortune of the wise is better than the prosperity of the fool.
> -- Epicurus
>
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>
>

Hi Michael,

sad to hear that. I ran FATE test before sending this patch to you, and it
passed. A few questions:
- Where can I find this Enigma_Principles_of_Lust.flv file?
- fps = 1180 or 1441 doesn't look like sane. Is file corrupted?

Thanks