Android项目里实现视频编辑功能的完整工程代码（ffmpeg/x264/yasm），包括视频编码x264，视频解码ffmpeg，转码进度实现（修改ffmpeg代码），测试例子(Android project implementation of the video editing function of the complete engineering code (ffmpeg/x264/yasm), including video coding, x264, video decoding,