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libavcodec/util: Fix timebase overflow check

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It could accidentally divide by zero if num was zero.

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
This commit is contained in:
Derek Buitenhuis 2016-01-27 21:12:04 +00:00
parent 09d5c28c3d
commit 265ed6732f
1 changed files with 1 additions and 1 deletions
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2
libavcodec/utils.c
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@ -1475,7 +1475,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
if (!avctx->rc_initial_buffer_occupancy)
avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
if (avctx->ticks_per_frame &&
if (avctx->ticks_per_frame && avctx->time_base.num &&
avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) {
av_log(avctx, AV_LOG_ERROR,
"ticks_per_frame %d too large for the timebase %d/%d.",