Ok, so when I first tried to play mp4 videos in Windows Media Player 10 it didn't work. So then i tried K-lite codec pack and it still didn't play them. I then tried 3ivx codec and the video played. The only problem was that the video and sound was extremely fast, as if it was going in fast motion! Does anybody know how I can either fix the problem with 3ivx or make K-lite pack work, or does anybody know of another codec that will work?
I use K-Lite (mega version) and it works all the time. Did you try other media players (e.g. media player classic)?
You don't need any codecs for mp4 playback. What is required is a splitter (K-Lite includes Haali's I think) and decoders for the streams (core aac for aac, coraavc for avc, ffdshow for aac, avc, mpeg-4, etc.) All you should really need is ffdshow and Haali's splitter. You could also try Gabest's splitter and alternative decoders. 3ivX includes an mp4 splitter (can't handle avc and is just out of date really), aac audio decoder and MPEG-4 video decoder.
