Having a powerful CPU is important to your overall computer system performace. Data Rate - Also known as bit rate or video bandwidth. As screensize, picture quality, sound quality and fluidity of motion increase, so does bandwidth. If the bandwidth a movie requires is greater than your connection to the Internet, then you will have to download the movie before viewing it. Photographs and video must digitized to be viewed or manipulated on a computer.
Digital video can originate on a computer or be digitized from an analog source.
QuickTime, MPEG, AVI and Real Video are just a few of the many popular formats for digital video. The opposite of uploading, which is to send a file over a network. The speed of a download depends on the size of the file and the speed of your connection to the network. DSL lines are asymmetrical which means they don't send data at the same rate they receive it. Typically they receive data at up to 1.5 mega bits per second and send it at up to 500 kilo bits per second.