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Digital video - Wikipedia, the free encyclopedia |
 | | Digital video is a type of video recording system that works by using a digital, rather than analog, representation of the video signal. |
 | | Digital video does not have frames on a length of film; instead it scans the fields of an image, and a full scan of each of those fields is considered a "frame." For instance, the NTSC Canon XL-1 has 480 lines; a scan of first the odd, then the even lines, provides a complete frame. |
 | | Provided that the video is retained in the same format (not "recompressed", as often occurs when video is edited for distribution, or compressed with special "lossless" codecs), digital video is a "lossless" format. |
| en.wikipedia.org /wiki/Digital_video (970 words) |
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