Reimar Döffinger <[email protected]> added the comment:

On Wed, Jun 23, 2010 at 11:03:04PM +0000, Laurent wrote:
> 
> Laurent <[email protected]> added the comment:
> 
> So, r21621 hides something else.
> I performed another dichotomy with r12684 reverted.
> 
> r20667 reveals the issue in this case:
>   Start decoding from seq/gop too, not just I frames.
>   Possibly fixes issue1124.
> 
> When the decoder delivers a non-key frame (seq/gop), FFmpeg encodes it 
> anyway, resulting in a grey frame. All that looks ok (if I get it right).
> 
> What still seems an issue, is that -ss (av_seek_frame) is supposed to seek to 
> a keyframe... so the first frame out of the decoder should be a keyframe 
> anyway.
> Or I am misunderstanding something here?

If you meant "the first frame out of the demuxer" instead of "decoder",
I think you got it exactly right.

________________________________________________
FFmpeg issue tracker <[email protected]>
<https://roundup.ffmpeg.org/issue2019>
________________________________________________

Reply via email to