User:Tamas Bates/PhotoProto/Video Loops

http://noirbear.com/loops/

Advantages over GIF:

• Fewer limitations on color palette
• Potential for improved file size at large resolutions (~45 MB GIF vs. 4.5 MB H.264 video in one test)
• Possibility for including an audio track without any synchronization headaches

Disadvantages:

• Smooth, seamless, looping depends on player. Most players produce a noticeable hiccup between the last and first frames of the video (most web browsers can handle looping without issue using the new <video> tag, though).
• Playback in HTML is restricted to one of three codecs (H.264, WebM, and OGG), none of which are fully supported by all browsers, yet.