[FFmpeg-devel] [PATCH v3 3/6] ffmpeg: move A/V non-streamcopy initialization to a later point

[Michael Niedermayer]

On Fri, Oct 16, 2020 at 04:16:46PM +0300, Jan Ekström wrote:
> - For video, this means a single initialization point in do_video_out.
> - For audio we unfortunately need to do it in two places just
>   before the buffer sink is utilized (if av_buffersink_get_samples
>   would still work according to its specification after a call to
>   avfilter_graph_request_oldest was made, we could at least remove
>   the one in transcode_step).
> 
> Other adjustments to make things work:
> - As the AVFrame PTS adjustment to encoder time base needs the encoder
>   to be initialized, so it is now moved to do_{video,audio}_out,
>   right after the encoder has been initialized. Due to this,
>   the additional parameter in do_video_out is removed as it is no
>   longer necessary.
> ---
>  fftools/ffmpeg.c | 112 ++++++++++++++++++++++++++++++++---------------
>  1 file changed, 77 insertions(+), 35 deletions(-)

This breaks:

./ffmpeg -ss 30.0 -i ~/tickets/1745/1745-Sample.mkv -f vob -c:a copy  -f framecrc -

"Too many packets buffered for output stream 0:1."
i assume the sample is here: http://www.spirton.com/uploads/FFmpeg/1745-Sample.mkv

thx


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