[FFmpeg-devel] [PATCH] avfilter/yadif: Fix time base for large denominators

[Tom Boshoven]

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;
 
-- 
2.31.1