virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-08-10 06:10:52 +02:00
Code Issues Releases Activity

estimate_timings_from_bit_rate: Check timebase and bitrate

Browse Source 
Fixes integer overflow and assertion failure

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer
2013-03-28 01:43:55 +01:00
parent 1831274ff1
commit ea9a6709a9
1 changed files with 4 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
libavformat/utils.c
View File

@@ -2325,9 +2325,11 @@ static void estimate_timings_from_bit_rate(AVFormatContext *ic)
if (filesize > 0) { if (filesize > 0) {
for(i = 0; i < ic->nb_streams; i++) { for(i = 0; i < ic->nb_streams; i++) {
st = ic->streams[i]; st = ic->streams[i];
duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num); if ( st->time_base.num <= INT64_MAX / ic->bit_rate
if (st->duration == AV_NOPTS_VALUE) && st->duration == AV_NOPTS_VALUE) {
duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num);
st->duration = duration; st->duration = duration;
}
} }
} }
} }