简单的视频上传系统，可以上传视频，发表评论。实现了视频的转码。,From a simple video system, you can upload videos, comment. The realization of the video codec.

关于video编码解码的非常好的学习资料，里面还有相关的源码。-Video codec on a very good learning materials, which still relevant source.

The MPEG-4 specification was developed in response to the growing need for a coding method that can facilitate dynamic access to audiovisual objects -The MPEG-4 specification was developed in response to the growing need for a coding metho