Today there are thousands for audio and video format. I want to know among them which is the best video and audio format. That means which video format is lighter and gives a good picture quality. I thing DVD are the best today. Because they gives out awesome picture quality and sound effects. Now the Blu rays are gaining importance in the market. But the use is limited to the player. Once Blu ray players are common then DVD's will be rarely used. If I want to upload a video on a website then which format will be most suitable that can open fast and work smoother in slow connection also. Thanks in advance.