It could accidentally divide by zero if num was zero.

Signed-off-by: Derek Buitenhuis <derek.buitenh...@gmail.com>
---
 libavcodec/utils.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index e06ee66..a3cb341 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -1050,7 +1050,7 @@ 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.",
-- 
2.7.0

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