From 5bb9d8affe128f071083695c88a58ddf5ce4fddf Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Mon, 12 Feb 2024 19:40:07 +0100 Subject: [PATCH] avfilter/vf_signature: Dont crash on no frames Signed-off-by: Michael Niedermayer (cherry picked from commit 3d5f03bbc8bba2929cc09b07d2731ae5d392e772) Signed-off-by: Michael Niedermayer --- 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);