From 8857dc6cd856b9f1eaf6c7f6c76b55f2ca95ef59 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Mon, 16 May 2016 12:49:06 +0200 Subject: [PATCH] ffmpeg: Check that r_frame_rate is set before attempting to use it Avoids unexpected occurance and dependency on NaN behavior and divisions by 0 Testcase: fate-lavf-fate-avi_cram Signed-off-by: Michael Niedermayer (cherry picked from commit 6085d6b2aeef28671614f625601a23cfc922d282) Signed-off-by: Michael Niedermayer --- ffmpeg.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/ffmpeg.c b/ffmpeg.c index ce5437404f..602cbfa45d 100644 --- a/ffmpeg.c +++ b/ffmpeg.c @@ -2882,7 +2882,8 @@ static int transcode_init(void) * overhead */ if(!strcmp(oc->oformat->name, "avi")) { - if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate) + if ( copy_tb<0 && ist->st->r_frame_rate.num + && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate) && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base) && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(dec_ctx->time_base) && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(dec_ctx->time_base) < 1.0/500