not sure if it's available for pc or mac but ffmpeg is a command line utility for linux that pretty much can do everything you ever dreamed of when it comes to converting media files.
i think it would be as simple as:
ffmpeg -i inputfile.mp4 -c copy -map 0 outputfile.mkv
if you're super desperate and don't have linux, download the free vmware player, download an xubuntu iso, and create an xubuntu vmmachine. maybe you'll like it and ditch everything else one day. haha
__________________
no signature. except for this one.
|