Can't help you now it's an mp4, but as an MKV, you could have used the cross platform MKVToolnix. cjc On 02/01/2013, at 1:41 AM, Michael Cucka <brucknerdoc at comcast.net> wrote: > Hello - and Happy New Year! > > I recently ripped a blu-ray disc contained several music videos - it ripped as a single, large mkv file. I converted that file to mp4, but now would like to separate each of the videos into separate files. What is a simple method doing this? The video format is H.264 and the audio is AAC - I'm running OS 10.8.2 > > Thanks - > > > Michael > brucknerdoc at comcast.net