normally when I demux a karaoke iso file (1 gb), I will get a m2v video file and two audio files (-180 and -181) for a total of 1gb. However after demuxing this 1gb iso file I get a m2a file (4gb) and another file which is empty. The other three 1gb iso files from this same karaoke file behave as normally expected.
Can any one know this problem?
My goal is to demux the iso file and reset the order of the audio tracks? thank you