基于ffmpeg将avi视频转换为mp4视频

[{"title":"（ 137 个子文件 14.42MB ） 基于ffmpeg将avi视频转换为mp4视频","children":[{"title":"FFmpeg.sdf <span style='color:#111;'> 3.69MB </span>","children":null,"spread":false},{"title":"FFmpeg.v12.suo <span style='color:#111;'> 18.50KB </span>","children":null,"spread":false},{"title":"avdevice-56.dll <span style='color:#111;'> 1.32MB </span>","children":null,"spread":false},{"title":"swscale-3.dll <span style='color:#111;'> 442.00KB </span>","children":null,"spread":false},{"title":"avformat-56.dll <span style='color:#111;'> 5.73MB </span>","children":null,"spread":false},{"title":"......","children":null,"spread":false},{"title":"<span style='color:steelblue;'>文件过多，未全部展示</span>","children":null,"spread":false}],"spread":true}]