When you watch a video on the YouTube site or a YouTube app on a mobile device, you use media streaming technology. With streaming, you can begin to view playback of a video file without having to first download the complete file to your computer, as you often have to do with other media items such as images. YouTube streaming lets you view various types of video files, sometimes at multiple different resolutions. With a YouTube account, you can upload your own videos for streaming over the service. Writer Bio
