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-rw-r--r--libavfilter/vf_fps.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavfilter/vf_fps.c b/libavfilter/vf_fps.c
index 4eb3663b1a..06ebdfadce 100644
--- a/libavfilter/vf_fps.c
+++ b/libavfilter/vf_fps.c
@@ -205,7 +205,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *buf)
}
/* now wait for the next timestamp */
- if (buf->pts == AV_NOPTS_VALUE) {
+ if (buf->pts == AV_NOPTS_VALUE || av_fifo_size(s->fifo) <= 0) {
return write_to_fifo(s->fifo, buf);
}