易语言的MP4的播放器，支持标准的MP4、AVI的播放源码，切记，请使用标准-Easy language MP4 player supports standard MP4, AVI playback source, remember, use the standard! !

mp4封装源代码，代码量少，区别于ffmpeg,mp4_v2,不需要其他任何的第三方库.-mp4 package source code, less code, different ffmpeg, mp4_v2, does not require any other third-party libraries.

Source code to show how to use FFMpeg to increase mp3/mp4 audio volume.