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-rw-r--r--libavfilter/vf_scale.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/libavfilter/vf_scale.c b/libavfilter/vf_scale.c
index 5e7285cda8..dd2f7e18a5 100644
--- a/libavfilter/vf_scale.c
+++ b/libavfilter/vf_scale.c
@@ -218,6 +218,14 @@ static int config_props(AVFilterLink *outlink)
if (!scale->sws)
return AVERROR(EINVAL);
+
+ if (inlink->sample_aspect_ratio.num)
+ outlink->sample_aspect_ratio = av_mul_q((AVRational){outlink->h*inlink->w,
+ outlink->w*inlink->h},
+ inlink->sample_aspect_ratio);
+ else
+ outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
+
return 0;
fail: