[FFmpeg-devel] [PATCH] avformat/mux: fix overflow in case one of dts in not set

[Michael Niedermayer]

On Thu, Sep 30, 2021 at 12:36:17PM +0200, Paul B Mahol wrote:
> Signed-off-by: Paul B Mahol <onemda at gmail.com>
> ---
>  libavformat/mux.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/libavformat/mux.c b/libavformat/mux.c
> index 2053a5636e..583328b123 100644
> --- a/libavformat/mux.c
> +++ b/libavformat/mux.c
> @@ -949,7 +949,7 @@ int ff_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out,
>              last_dts = av_rescale_q(last->pkt.dts,
>                                      st->time_base,
>                                      AV_TIME_BASE_Q);
> -            delta_dts = FFMAX(delta_dts, last_dts - top_dts);
> +            delta_dts = FFMAX(delta_dts, (top_dts == AV_NOPTS_VALUE || last_dts == AV_NOPTS_VALUE) ? 0 : last_dts - top_dts);
>          }

In which case are packets without DTS interleaved by DTS ?

thx

[...]

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