[FFmpeg-devel] [PATCH] lavf/dashenc: Remove global_sidx from movenc params for live streaming.

[Jeyapal, Karthick]

On 11/28/18 4:41 PM, Andrey Semashev wrote:
> The global_sidx flag causes errors like the following in movenc when media
> segment removal is enabled via windos_size or remove_at_exit:
>
> Non-consecutive fragments, writing incorrect sidx
> Unable to re-open  output file for the second pass (faststart)
Removing global_sidx flag adds sidx atom to each moof fragment adding significant bitrate overhead. 
Instead I have submitted a patch to handle this case cleanly in movenc. http://ffmpeg.org/pipermail/ffmpeg-devel/2018-November/236873.html
Please try the above patch and let me know if that will work for you. 
> ---
>  libavformat/dashenc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/libavformat/dashenc.c b/libavformat/dashenc.c
> index 6ce70e0076..cb49641b4e 100644
> --- a/libavformat/dashenc.c
> +++ b/libavformat/dashenc.c
> @@ -1141,7 +1141,7 @@ static int dash_init(AVFormatContext *s)
>  
>          if (os->segment_type == SEGMENT_TYPE_MP4) {
>              if (c->streaming)
> -                av_dict_set(&opts, "movflags", "frag_every_frame+dash+delay_moov+global_sidx", 0);
> +                av_dict_set(&opts, "movflags", "frag_every_frame+dash+delay_moov", 0);
>              else
>                  av_dict_set(&opts, "movflags", "frag_custom+dash+delay_moov", 0);
>          } else {