avformat/utils: avoid undefined integer overflow behavior in update_stream_timings()

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
7 years ago · 5ecd580953
parent eb350ab738
commit 5ecd580953
1 changed files with 1 additions and 1 deletions
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@ -2666,7 +2666,7 @@ static void update_stream_timings(AVFormatContext *ic)
                duration = FFMAX(duration, duration1);
        }
    }
-    if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
+    if (start_time == INT64_MAX || (start_time > start_time_text && start_time - (uint64_t)start_time_text < AV_TIME_BASE))
        start_time = start_time_text;
    else if (start_time > start_time_text)
        av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);