[FFmpeg-devel] [PATCH] avcodec/h264_slice: use the new SAR early when setting the decoder

[Steve Lhomme]

ping ?


Le 19/01/2018 à 13:01, Steve Lhomme a écrit :
> If we don't do that get_format might not be called for a while and the proper
> SAR not used.
>
> See the sample mentioned here: https://trac.videolan.org/vlc/ticket/19435
> ---
>   libavcodec/h264_slice.c | 4 +++-
>   1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/libavcodec/h264_slice.c b/libavcodec/h264_slice.c
> index e6b7998834..319a37f5b6 100644
> --- a/libavcodec/h264_slice.c
> +++ b/libavcodec/h264_slice.c
> @@ -1050,8 +1050,10 @@ static int h264_init_ps(H264Context *h, const H264SliceContext *sl, int first_sl
>           || (non_j_pixfmt(h->avctx->pix_fmt) != non_j_pixfmt(get_pixel_format(h, 0))))
>           must_reinit = 1;
>   
> -    if (first_slice && av_cmp_q(sps->sar, h->avctx->sample_aspect_ratio))
> +    if (first_slice && av_cmp_q(sps->sar, h->avctx->sample_aspect_ratio)) {
>           must_reinit = 1;
> +        ff_set_sar(h->avctx, sps->sar);
> +    }
>   
>       if (!h->setup_finished) {
>           h->avctx->profile = ff_h264_get_profile(sps);