On Sat, Nov 21, 2015 at 14:57:42 -0500, Ming Luo wrote: > And if I trim the original 18 min video to 15 minutes, it works. To me this indicates that there is some error in the video stream which ffmpeg can't handle. Sorry, I don't know more than that (such as whether ffmpeg should handle that, or how to check what kind of issue that may be). Moritz