Does it work with MPEG-1 or MPEG-2 “muxed” files?
→ Partially. Due to a limitation in QuickTime, Wii Transfer cannot currently export audio from “muxed” (multiplexed) video to SD cards. To see if one of your movie files is encoded in this way, open it in QuickTime Player and choose Show Movie Info from the Window menu. This only applies to SD cards; the movie streaming feature has a different implementation.