Transferring data on the Web is measured by something called transfer bandwidth. Similar to your electric meter or water bill, transfer bandwidth measures how much data you have transferred.
If you have a 10 MB file and it is downloaded once, 10 MGB of bandwidth is used. If that same 10 MB file is downloaded seven times, 70 MB of transfer bandwidth is used. Partial downloads only use transfer bandwidth for the part of the file that was actually downloaded, so a file’s views multiplied by its size rarely equals the total transfer bandwidth consumed.
Since transfer bandwidth is used every time a video is downloaded, if a video is embedded on a blog or website, every time that page is loaded the video is downloaded again. To avoid using up your bandwidth, use a format that utilizes the Screencast.com click-to-view functionality (MP4 or SWF). With this option, Screencast.com displays a "Play" image created from the video's thumbnail and the video is only downloaded if a viewer clicks the play button. Other video file formats begin to download the video as soon as the content page is accessed.