[FFmpeg-devel] [PATCH] avformat/concat: Fix wrong wrapped timestamp

[Steven Liu]

2017-12-14 16:00 GMT+08:00  <mymoeyard at gmail.com>:
> From: wu zhiqiang <mymoeyard at gmail.com>
>
> When using concat protocal, start from middle of file will generate non-zero wrap reference. If seek to time less than the wrap reference, wrap control will be triggered and generate wrong wrapped timestamp.
> Copy wrap related stream properties when reading header can fix this problem.
>
> Signed-off-by: wu zhiqiang <mymoeyard at gmail.com>
> ---
>  libavformat/concatdec.c | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/libavformat/concatdec.c b/libavformat/concatdec.c
> index 0e189012ad..e933888661 100644
> --- a/libavformat/concatdec.c
> +++ b/libavformat/concatdec.c
> @@ -188,6 +188,11 @@ static int copy_stream_props(AVStream *st, AVStream *source_st)
>      st->time_base           = source_st->time_base;
>      st->sample_aspect_ratio = source_st->sample_aspect_ratio;
>
> +    /* Fix wrap control problem */
> +    st->pts_wrap_bits       = source_st->pts_wrap_bits;
> +    st->pts_wrap_behavior   = source_st->pts_wrap_behavior;
> +    st->pts_wrap_reference  = source_st->pts_wrap_reference;
> +
>      av_dict_copy(&st->metadata, source_st->metadata, 0);
>      return 0;
>  }
> --
> 2.15.0
>
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LGTM


Thanks

Steven