I want to understand how video and audio decoding works, specially the timing synchronization (how to get 30fps video, how to couple that with audio, etc.). I don't want to know ALL the details, just the essence of it. I want to be able to write a high level simplification of an actual video/audio decoder.
Could you provide pointers to me? An actual C/C++ source code of a MPEG2 video/audio decoder would be the fastest way to understand those things I think.
You can browse source code of ffmpeg (available through svn), or its API documentation.