[FFmpeg-devel] [PATCH] avcodec/av1dec: don't set aspect ratio when it's not yet known

[Zhao Zhili]

On Wed, 2023-09-06 at 11:14 -0300, James Almer wrote:
> Makes the output of the native decoder consistent with external
> decoders like
> libdav1d with fate-enhanced-flv-av1.
> 
> Signed-off-by: James Almer <jamrial at gmail.com>
> ---
>  libavcodec/av1dec.c             | 1 -
>  tests/ref/fate/enhanced-flv-av1 | 2 +-
>  2 files changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/libavcodec/av1dec.c b/libavcodec/av1dec.c
> index 03283ab064..ec8401f4e0 100644
> --- a/libavcodec/av1dec.c
> +++ b/libavcodec/av1dec.c
> @@ -755,7 +755,6 @@ static int
> set_context_with_sequence(AVCodecContext *avctx,
>          if (ret < 0)
>              return ret;
>      }
> -    avctx->sample_aspect_ratio = (AVRational) { 1, 1 };
>  
>      if (seq->timing_info_present_flag)
>          avctx->framerate = ff_av1_framerate(1LL + seq-
> >timing_info.num_ticks_per_picture_minus_1,
> diff --git a/tests/ref/fate/enhanced-flv-av1
> b/tests/ref/fate/enhanced-flv-av1
> index b2a624e41e..c50da5d430 100644
> --- a/tests/ref/fate/enhanced-flv-av1
> +++ b/tests/ref/fate/enhanced-flv-av1
> @@ -3,7 +3,7 @@
>  #media_type 0: video
>  #codec_id 0: av1
>  #dimensions 0: 320x176
> -#sar 0: 1/1
> +#sar 0: 0/1
>  0,          0,          0,       41,     4718, 0xc4d912ec
>  0,         42,         42,       41,     5109, 0xc065dd7d, F=0x0
>  0,         83,         83,       41,      192, 0x160c5335, F=0x0

LGTM. I searched mailbox just before sending the same patch :P