[FFmpeg-cvslog] avfilter/vf_signature: Dont crash on no frames
Michael Niedermayer
git at videolan.org
Sun Apr 14 19:36:24 EEST 2024
ffmpeg | branch: release/6.0 | Michael Niedermayer <michael at niedermayer.cc> | Mon Feb 12 19:40:07 2024 +0100| [d9882369d879240952e9de30b10b91093218ca77] | committer: Michael Niedermayer
avfilter/vf_signature: Dont crash on no frames
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit 3d5f03bbc8bba2929cc09b07d2731ae5d392e772)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=d9882369d879240952e9de30b10b91093218ca77
---
libavfilter/vf_signature.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/libavfilter/vf_signature.c b/libavfilter/vf_signature.c
index 4896e8f2c1..53ed413a4c 100644
--- a/libavfilter/vf_signature.c
+++ b/libavfilter/vf_signature.c
@@ -384,6 +384,9 @@ static int xml_export(AVFilterContext *ctx, StreamContext *sc, const char* filen
FILE* f;
unsigned int pot3[5] = { 3*3*3*3, 3*3*3, 3*3, 3, 1 };
+ if (!sc->coarseend->last)
+ return AVERROR(EINVAL); // No frames ?
+
f = avpriv_fopen_utf8(filename, "w");
if (!f) {
int err = AVERROR(EINVAL);
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