jiangjie <jiangjie...@gmail.com> 于2024年9月2日周一 16:35写道：
>
> If the segment is very small, avformat_find_stream_info will read all
> audio/video data in this segment. cur->is_restart_needed is set to 0 later in
> dash_read_packet function, and no chance to be set to 1 again in the
> read_data function.
>
> Reproduction:
> ffmpeg -f lavfi -i mandelbrot -f lavfi -i anullsrc -c:v vp8 -g 5 -r 5 -c:a
> libopus -use_template 0 -seg_duration 1 -t 15 -y test_720.mpd
> ffprobe -show_packets test_720.mpd
>
> The duration of the test_720.mpd file is 15 seconds, but the duration that
> ffprobe show is small than 15 second.
> ---
> libavformat/dashdec.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/libavformat/dashdec.c b/libavformat/dashdec.c
> index 63070b77be..12960d0312 100644
> --- a/libavformat/dashdec.c
> +++ b/libavformat/dashdec.c
> @@ -2207,9 +2207,9 @@ static int dash_read_packet(AVFormatContext *s,
> AVPacket *pkt)
> if (cur->is_restart_needed) {
> cur->cur_seg_offset = 0;
> cur->init_sec_buf_read_offset = 0;
> + cur->is_restart_needed = 0;
> ff_format_io_close(cur->parent, &cur->input);
> ret = reopen_demux_for_component(s, cur);
> - cur->is_restart_needed = 0;
> }
> }
> return AVERROR_EOF;
> --
> 2.43.0
>
> _______________________________________________
> ffmpeg-devel mailing list
> ffmpeg-devel@ffmpeg.org
> https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>
> To unsubscribe, visit link above, or email
> ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
good catch
LGTM
Thanks
Steven
_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
To unsubscribe, visit link above, or email
ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
