mov转mp4代码，使用avfoudation frame-mov to mp4 use avfoudation frame

手机视频采集到mp4到发送rtsp服务器-Mobile phone video capture to MP4 to send a RTSP server

基于ffmpeg生成IOS对应静态库，只支持常用的hls和MP4，解码为硬解码的脚本，生成的库大大减小。(Generates IOS corresponding static library based on ffmpeg, only supports the commonly used HLS and MP4, decodes the scr ipt for hard decoding, and the generated library is greatly reduced.)