QTMovieXtra
has the following minimal requirements:
Windows XP or higher
QTMovieXtra.x32
MacOS 8.6-9.2 (PPC)
QTMovieXtra (only V1.0.9)
MacOSX 10.1
QTMovieXtra.OSX
MacOSX 10.4 (PPC & intel)
QTMovieXtra.xtra
QuickTime 6 or higher (QuickTime 7 for Director 11)