On2

• Website: http://www.on2.com/

On2 started out as The Duck Corporation and developed several video codecs called TrueMotion as well custom variations of the standard IMA ADPCM audio codec. Then they changed their name to On2 and produced the line of VP* codecs.

On2 Video Codecs

• Duck TrueMotion 1
• Duck TrueMotion 2
• VP3
• VP4
• VP5
• VP6
• VP7

On2 Audio Codecs

• Duck DK4 ADPCM
• Duck DK3 ADPCM
• Audio For Video Perceptual Audio Codec