On 2/8/2020 7:20 PM, Andriy Gelman wrote:
> From: Andriy Gelman <andriy.gel...@gmail.com>
> 
> FMO is not supported and fields related to FMO are not parsed, meaning
> that any fields which follow will be corrupt.
> ---
>  libavcodec/h264_ps.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/libavcodec/h264_ps.c b/libavcodec/h264_ps.c
> index edbaa96b64e..80216854079 100644
> --- a/libavcodec/h264_ps.c
> +++ b/libavcodec/h264_ps.c
> @@ -794,6 +794,8 @@ int ff_h264_decode_picture_parameter_set(GetBitContext 
> *gb, AVCodecContext *avct
>      if (pps->slice_group_count > 1) {
>          pps->mb_slice_group_map_type = get_ue_golomb(gb);
>          av_log(avctx, AV_LOG_ERROR, "FMO not supported\n");

Should probably be avpriv_report_missing_feature() instead. Look right
above this chunk for an usage example of this function.

> +        ret = AVERROR_PATCHWELCOME;
> +        goto fail;
>      }
>      pps->ref_count[0] = get_ue_golomb(gb) + 1;
>      pps->ref_count[1] = get_ue_golomb(gb) + 1;
> 

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