If an input has an undefined timestamp, the computation
for silence at stitches can overflow.
Partial fix for trac ticket #8843.
Signed-off-by: Nicolas George <geo...@nsup.org>
---
libavfilter/avf_concat.c | 4 ++++
1 file changed, 4 insertions(+)
"Partial fix" means it does not segfault and exits with an error instead.
The actual problem in this ticket is amix sending a frame with no PTS.
diff --git a/libavfilter/avf_concat.c b/libavfilter/avf_concat.c
index 246628498a..f376f72754 100644
--- a/libavfilter/avf_concat.c
+++ b/libavfilter/avf_concat.c
@@ -179,6 +179,10 @@ static int push_frame(AVFilterContext *ctx, unsigned
in_no, AVFrame *buf)
AVFilterLink *outlink = ctx->outputs[out_no];
struct concat_in *in = &cat->in[in_no];
+ if (buf->pts == AV_NOPTS_VALUE) {
+ av_log(ctx, AV_LOG_ERROR, "Frame without timestamp on input %d\n",
in_no);
+ return AVERROR(EINVAL);
+ }
buf->pts = av_rescale_q(buf->pts, inlink->time_base, outlink->time_base);
in->pts = buf->pts;
in->nb_frames++;
--
2.27.0
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