lavfi/concat: fix logic error in framerate check

fix logic error in framerate check, it's introduced by commit
3ad5d4df9ce794d3eeb0f526c5f3e446bf97c616

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Jun Zhao <barryjzhao@tencent.com>

diff --git a/libavfilter/avf_concat.c b/libavfilter/avf_concat.c
index 2791859d8fa28c7c924b22fe1eda2f04e75c6201..28bd5407add86d73e0237334a04a88bb3cee80fd 100644 (file)
--- a/libavfilter/avf_concat.c
+++ b/libavfilter/avf_concat.c
@@ -136,7 +136,7 @@ static int config_output(AVFilterLink *outlink)
     for (seg = 1; seg < cat->nb_segments; seg++) {
         inlink = ctx->inputs[in_no + seg * ctx->nb_outputs];
         if (outlink->frame_rate.num != inlink->frame_rate.num ||
-            outlink->frame_rate.den != outlink->frame_rate.den) {
+            outlink->frame_rate.den != inlink->frame_rate.den) {
             av_log(ctx, AV_LOG_VERBOSE,
                     "Video inputs have different frame rates, output will be VFR\n");
             outlink->frame_rate = av_make_q(1, 0);