Okay, this might be a bit much, so I'll do my best to condense what I have to say. I downloaded a movie, it's an mkv (Matroska file) and added two extra audio tracks to it by muxing it with MKVMerge GUI. The problem is the two added audio tracks are not in sync with the video. It's actually like 5-7 seconds faster than the video (just an estimate, I don't really know the delay in time). The audio for both is the same length as the video, thank God. I just need to know how to solve this problem before frustrating myself even more @_@; There is an option in MKVMerge: Format Specific Options in which you can set the delay in audio to match the video. The only problem is, they don't tell you how much you need to delay or speed up the audio. I've only had several unsuccessful guesses and about to give up.
Can anyone offer me any help?