Free, Small, Quick, Customizable and the Bestest FLV Player on Internet!
f4Player is an open source flash (AS3) video/stream player and library project. It is so small that it is only 13kb and totally free under GPL license.
A few years ago I wanted to play a video (flv) on my webpage and I developed a realy small, simple flv player and I'm still developing it for HTML5 support and JS interface.
I've only tested it with flv, f4v, mp4, stream, live stream, subscribed CDN and it works enough for me for now!
