[FFmpeg-cvslog] avfilter/vf_nnedi: set frame_rate only when needed

[Paul B Mahol]

ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Sat Apr 30 10:01:23 2022 +0200| [6018fa899f5fd06e3d565adaf229dbd5155d0f56] | committer: Paul B Mahol

avfilter/vf_nnedi: set frame_rate only when needed

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=6018fa899f5fd06e3d565adaf229dbd5155d0f56
---

 libavfilter/vf_nnedi.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/libavfilter/vf_nnedi.c b/libavfilter/vf_nnedi.c
index cbe2110577..370f643678 100644
--- a/libavfilter/vf_nnedi.c
+++ b/libavfilter/vf_nnedi.c
@@ -166,13 +166,15 @@ AVFILTER_DEFINE_CLASS(nnedi);
 static int config_output(AVFilterLink *outlink)
 {
     AVFilterContext *ctx = outlink->src;
+    const NNEDIContext *const s = ctx->priv;
 
     outlink->time_base     = av_mul_q(ctx->inputs[0]->time_base, (AVRational){1, 2});
     outlink->w             = ctx->inputs[0]->w;
     outlink->h             = ctx->inputs[0]->h;
 
-    outlink->frame_rate = av_mul_q(ctx->inputs[0]->frame_rate,
-                                   (AVRational){2, 1});
+    if (s->field == -2 || s->field > 1)
+        outlink->frame_rate = av_mul_q(ctx->inputs[0]->frame_rate,
+                                       (AVRational){2, 1});
 
     return 0;
 }