I am trying to find a nice quick way of converting my MKV media to MP4/M4V on Windows for playback on both Apple TV and XBMC. Up until now I have been running a batch file that goes through each file in a given folder and runs the following FFMPEG command against it Code: ffmpeg -y -stats -i "%%a" -acodec libvo_aacenc -ac 2 -ar 44100 -ab 192k -vcodec copy "%%a.mp4" This works well for playback on the Apple TV but the resulting file is useless on XBMC. It plays really well for the first 5 or so minutes and then starts stuttering before slowing down to about 1 fps. Can anybody suggest a good converter for Windows that will just repack the video into an MP4 container and convert the audio to an Apple TV compatible format? I'm running all this on a low powered HP microserver with a GeForce 210 so a full re-encode of the video using something like Handbrake just isn't a viable option.