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| author | Michael Niedermayer <michael@niedermayer.cc> | 2023-12-23 18:04:32 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2023-12-29 19:29:07 +0100 |
| commit | 61e73851a33f0b4cb7662f8578a4695e77bd3c19 (patch) | |
| tree | 9584d2331cbd220175e579c47927b2b2a3f13b08 | |
| parent | 50f0f8c53c818f73fe2d752708e2fa9d2a2d8a07 (diff) | |
| download | ffmpeg-61e73851a33f0b4cb7662f8578a4695e77bd3c19.tar.gz | |
avfilter/f_reverse: Apply PTS compensation only when pts is available
Fixes: out of array access
Fixes: tickets/10753/poc16ffmpeg
Regression since: 45dc668aea0edac34969b5a1ff76cf9ad3a09be1
Found-by: Zeng Yunxiang
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavfilter/f_reverse.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/libavfilter/f_reverse.c b/libavfilter/f_reverse.c index 086819a207..744f4a3cc8 100644 --- a/libavfilter/f_reverse.c +++ b/libavfilter/f_reverse.c @@ -266,7 +266,8 @@ static int areverse_request_frame(AVFilterLink *outlink) AVFrame *out = s->frames[s->nb_frames - 1]; out->duration = s->duration[s->flush_idx]; out->pts = s->pts[s->flush_idx++] - s->nb_samples; - s->nb_samples += s->pts[s->flush_idx] - s->pts[s->flush_idx - 1] - out->nb_samples; + if (s->nb_frames > 1) + s->nb_samples += s->pts[s->flush_idx] - s->pts[s->flush_idx - 1] - out->nb_samples; if (av_sample_fmt_is_planar(out->format)) reverse_samples_planar(out); |