[Mp4-tech] Newbie question

[Amol Chavan]

I am new to this group. I want to know what is new is MPEG-4. what the different codec for example AVC/H.264/JVT/H.26L ...Any link or document will do...
Where can i find a store of mpeg-4 video and audio files ?
Are there any tools to create mpeg-4 audio and videos ???
Are there any MPEG-4 filters (Direct Show filters)
Thanks in advance
Amol
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