MP4 Splitter (it handle MP4, MOV and 3GP files) + ffdshow tryouts (with active support required codecs).
BTW... look at
codec management tool (with latest BS.player version').
Or...
Haali Media Splitter (handle only some QT files (example with H.264/AVC, but not with Sorenson video)) + required DirectShow decoders.
Or...
MediaLooks QT source filter + QT Alternative or QT.
Or...
DirectShow filters installed with Nero.
Or...
Cyberlink QT source filter (installed with some Cyberlink apps) + QT Alternative or QT.
Actual QuickTime Alternative not contain DirectShow filters.
Old ('illegal') versions QT Alternative contain filters from Nero or Cyberlink.
BS.player can't use 'directly' QT 'codecs' - need DirectShow filters.