> H.264 doesn't use the DCT H264's transform is integer a DCT approximation— optimized to only use small multiplies and shifts—, some may say that its far enou

> H.264 doesn't use the DCT H264's transform is integer a DCT approximation— optimized to only use small multiplies and shifts—, some may say that its far enough that it ought not be called a DCT anymore, though at least after correcting for scaling I wouldn't agree. In any case, it shares DCT's advantages and disadvantages.