avfilter/vf_w3fdif: fix time base for large denominators

3 years ago · c4e51af5e7
parent 022e50c002
commit c4e51af5e7
1 changed files with 2 additions and 4 deletions
--- a/libavfilter/vf_w3fdif.c
+++ b/libavfilter/vf_w3fdif.c
@ -334,10 +334,8 @@ static int config_output(AVFilterLink *outlink)
 {
    AVFilterLink *inlink = outlink->src->inputs[0];

-    outlink->time_base.num = inlink->time_base.num;
-    outlink->time_base.den = inlink->time_base.den * 2;
-    outlink->frame_rate.num = inlink->frame_rate.num * 2;
-    outlink->frame_rate.den = inlink->frame_rate.den;
+    outlink->time_base = av_mul_q(inlink->time_base, (AVRational){1, 2});
+    outlink->frame_rate = av_mul_q(inlink->frame_rate, (AVRational){2, 1});

    return 0;
 }