[FFmpeg-cvslog] avfilter/vf_mix: output same number of frames from input for tmix
Paul B Mahol
git at videolan.org
Fri Apr 29 23:26:16 EEST 2022
ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Fri Apr 29 21:56:02 2022 +0200| [55e0b041b370b09593e5d9f02ff56409d4ce3ad7] | committer: Paul B Mahol
avfilter/vf_mix: output same number of frames from input for tmix
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=55e0b041b370b09593e5d9f02ff56409d4ce3ad7
---
libavfilter/vf_mix.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/libavfilter/vf_mix.c b/libavfilter/vf_mix.c
index 79c96e5aec..64d07bbbbb 100644
--- a/libavfilter/vf_mix.c
+++ b/libavfilter/vf_mix.c
@@ -415,8 +415,12 @@ static int tmix_filter_frame(AVFilterLink *inlink, AVFrame *in)
if (s->nb_frames < s->nb_inputs) {
s->frames[s->nb_frames] = in;
s->nb_frames++;
- if (s->nb_frames < s->nb_inputs)
- return 0;
+ while (s->nb_frames < s->nb_inputs) {
+ s->frames[s->nb_frames] = av_frame_clone(s->frames[s->nb_frames - 1]);
+ if (!s->frames[s->nb_frames])
+ return AVERROR(ENOMEM);
+ s->nb_frames++;
+ }
} else {
av_frame_free(&s->frames[0]);
memmove(&s->frames[0], &s->frames[1], sizeof(*s->frames) * (s->nb_inputs - 1));
@@ -433,7 +437,7 @@ static int tmix_filter_frame(AVFilterLink *inlink, AVFrame *in)
out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!out)
return AVERROR(ENOMEM);
- out->pts = s->frames[0]->pts;
+ out->pts = s->frames[s->nb_frames - 1]->pts;
td.out = out;
td.in = s->frames;
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