Video JS is a JavaScript-based open source HTML5 video player. Its an image-less lightweight video player with fallback support to Flowplayer (see greepit post).

Supported formats:

• H264 video
• Theora video & Vorbis audio in the OGG container
• WebM format – compressed with VP8 video codec
  (WebM is developing an open video format for the web that is freely available to everyone)

This HTML5 Video Player is easily skinnable with CSS, supports full screen and compatible with iPhone and iPad.