From ea1d8465e6eca582c09e2526f677033b62576fda Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sun, 10 Feb 2013 18:15:33 +0100 Subject: [PATCH] Fix division by 0 due to audio frame size Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer --- libavformat/mvi.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libavformat/mvi.c b/libavformat/mvi.c index 6b74597f07..953c1824fa 100644 --- a/libavformat/mvi.c +++ b/libavformat/mvi.c @@ -96,6 +96,10 @@ static int read_header(AVFormatContext *s) mvi->get_int = (vst->codec->width * vst->codec->height < (1 << 16)) ? avio_rl16 : avio_rl24; mvi->audio_frame_size = ((uint64_t)mvi->audio_data_size << MVI_FRAC_BITS) / frames_count; + if (!mvi->audio_frame_size) { + av_log(s, AV_LOG_ERROR, "audio_frame_size is 0\n"); + return AVERROR_INVALIDDATA; + } mvi->audio_size_counter = (ast->codec->sample_rate * 830 / mvi->audio_frame_size - 1) * mvi->audio_frame_size; mvi->audio_size_left = mvi->audio_data_size;