[Ffmpeg-devel] av_seek_frame with mpeg

[Måns Rullgård]

Claude Joseph-Angelique <Claude.Joseph-Angelique at etca.fr> writes:

> hi,
> According to the doc, using av_seek_frame with the
> AVSEEK_FLAG_BACKWARD flag will seek to the last keyframe at the
> timestamp specified. This work wery well with avi file, but not with
> mpeg files. With mpeg, av_seek_frame return a success code but when I
> try to call av_read_frame after, it give me a degraded image. Why?

MPEG files don't indicate where the keyframes are.

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