[FFmpeg-devel] [PATCH] avfilter/yadif: Fix time base for large denominators
Andriy Gelman
andriy.gelman at gmail.com
Tue May 25 05:33:41 EEST 2021
Hello,
On Mon, 24. May 11:52, Tom Boshoven wrote:
> This fixes an issue where the yadif filter could cause the timebase denominator to overflow.
>
> Signed-off-by: Tom Boshoven <tom at jwplayer.com>
> ---
> libavfilter/vf_yadif.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/libavfilter/vf_yadif.c b/libavfilter/vf_yadif.c
> index a6942a2aa2..b067c5eead 100644
> --- a/libavfilter/vf_yadif.c
> +++ b/libavfilter/vf_yadif.c
> @@ -293,8 +293,7 @@ static int config_output(AVFilterLink *outlink)
> AVFilterContext *ctx = outlink->src;
> YADIFContext *s = ctx->priv;
>
> - outlink->time_base.num = ctx->inputs[0]->time_base.num;
> - outlink->time_base.den = ctx->inputs[0]->time_base.den * 2;
> + outlink->time_base = av_mul_q(outlink->time_base, (AVRational){1, 2});
> outlink->w = ctx->inputs[0]->w;
> outlink->h = ctx->inputs[0]->h;
Some fate tests fail on patchwork:
https://patchwork.ffmpeg.org/project/ffmpeg/patch/20210524155206.47644-1-tom@jwplayer.com/
--
Andriy
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