On 03/10/18 01:18, James Almer wrote:
> Signed-off-by: James Almer <jamr...@gmail.com>
> ---
>  libavformat/ivfenc.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/libavformat/ivfenc.c b/libavformat/ivfenc.c
> index 66441a2a43..adf72117e9 100644
> --- a/libavformat/ivfenc.c
> +++ b/libavformat/ivfenc.c
> @@ -97,6 +97,8 @@ static int ivf_check_bitstream(struct AVFormatContext *s, 
> const AVPacket *pkt)
>  
>      if (st->codecpar->codec_id == AV_CODEC_ID_VP9)
>          ret = ff_stream_add_bitstream_filter(st, "vp9_superframe", NULL);
> +    else if (st->codecpar->codec_id == AV_CODEC_ID_AV1)
> +        ret = ff_stream_add_bitstream_filter(st, "av1_metadata", 
> "td=insert");
>  
>      return ret;
>  }
> 

I'm not quite seeing why this is wanted - could you explain it a bit further?

(Since IVF is packetised into temporal units already, it seems to me that 
having TDs or not in the file won't change anything from the point of view of 
the consumer.)

Thanks,

- Mark
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