XiphQT can't play ON2 VP3 V3.2 video tracks encapsulated in .mov files (haven't tried other wrappers)
System: Intel MacBook Core Duo running OS X 10.4.9
XiphQT 0.1.7 won't play back VP3 V3.2 encoded files. Theora is based on (is?) VP3 (well, that's what it says at www.vp3.com, anyway) so I don't really get why not. Hope you can fix ASAP since the original ON2 codec is PPC only so won't work on an Intel Mac unless QuickTime is opened in Rosetta and then performance sucks.
A sample file is available here: www.assj59.dsl.pipex.com/HitchHikersGuideToTheGalaxyTrailer.mov
Just thought to do a search for a previous ticket about this: I did find one, but your response to it said that some sample files would help. So here you go. Hope you can get it working. Good luck. :-)