mp4 vs flv

Summary:

1.FLV is more popular in video streaming while MP4 is more popular in portable devices
2.MP4 supports menus while FLV doesn’t
3.MP4 supports subtitles while FLV doesn’t
4.MP4 supports chapters while FLV doesn’t
5.MP4 is fully compatible with H.264 while FLV isn’t

来自：

http://www.differencebetween.net/technology/protocols-formats/difference-between-mp4-and-flv/