JW Player

JW Player is an open source tool for playing FLV, H.264, MP3 and YouTube videos for your web pages.

JW Player is the most popular open source audio/video player for the web. It supports playback of any Adobe Flash Player format and browsers that can handle HTML5 (FLV, H.264, MP4, VP8, WebM, MP3, AAC, JPG, PNG and GIF). It also supports streaming formats and playlist (including RMTP, HTTP, live streaming and more) offering a wide range of playback options.