f4Player是一个开源的Flash视频播放器，可以播放.fly、.f4v和.mp4等文件。整个播放器只有8kb左右，拥有一个可更换皮肤的界面。支持边播放，边下载和全屏播放-f4Player is an open source Flash video player that can play. fly,. f4v and. mp4 and other documents. 8kb about the only player with a replaceable skin interface.