- if (!track->default_duration && track->video.frame_rate > 0)
- track->default_duration = 1000000000 / track->video.frame_rate;
+ if (!track->default_duration && track->video.frame_rate > 0) {
+ double default_duration = 1000000000 / track->video.frame_rate;
+ if (default_duration > UINT64_MAX || default_duration < 0) {
+ av_log(matroska->ctx, AV_LOG_WARNING,
+ "Invalid frame rate %e. Cannot calculate default duration.\n",
+ track->video.frame_rate);
+ } else {
+ track->default_duration = default_duration;
+ }
+ }