Both RealPlayer and QuickTime can play 3gp (a mpeg 4 codec for mobile phones) but Media Player Classic and/or real / qt alternative can't. Also the 3ivx splitter is able to handle 3gp, but won't decode the video / audio stream.
And one more thing.. is it possible to build a filter with the GraphFilter editor to play quicktime movies? Is there a sorensen vidc.SVQ1 codec or at least a decoder?
I need some help, ppl