I have some MKV files that are x264 video, and DTS audio. I want to re-mux them to M4V to stream to my ATV3. Only remux video though, as I don't want to re-encode and lose more quality. Currently I've been using MP4Tools for the remux since I need to convert the DTS audio to AC3 DD 5.1. I then use Subler to import all the meta information and clean the file up for iTunes. I'd like to find 1 program to do it all for me in 1 sweep if possible. As I understand it, Subler can't do DTS to AC3 DD 5.1, so I need to use MP4Tools for that, but MP4Tools doesn't have any of the meta import features. I tried using iFlicks, but I can't seem to force it to not transcode, and just remux. Every time it spits out a file almost half the size of original, and always says Encoding H.264 in the process. Is there anyway to force iFlicks to just remux, don't touch video, and make the DTS to AC3? I haven't tried iVI since I would like a trial before I purchase an app.