f4Player – Lightweight Action Script 3 Flash Video Player
f4Player is a lightweight (8kb) open source action script 3 based flash video player for developers to play .flv, .f4v or .mp4 files in websites or within AS3 projects.
it has skinnable interface that easily customize and provide player files (.swf) for webmasters to easily play videos on web pages. The player support progressive downloading, video seeking and allow user to open videos in fullscreen mode. it also offer xml playlist for sharing playlists and stream video.