Editing Digital video (section)

== Technical properties ==
Live digital video consumes bandwidth. Recorded digital video consumes data storage. The amount of bandwidth or storage required is determined by the frame size, color depth and frame rate. Each pixel consumes a number of bits determined by the color depth. The data required to represent a frame of data is determined by multiplying by the number of pixels in the image. The bandwidth is determined by multiplying the storage requirement for a frame by the frame rate. The overall storage requirements for a program can then be determined by multiplying bandwidth by the duration of the program.

These calculations are accurate for uncompressed video, but due to the relatively high bit rate of uncompressed video, video compression is extensively used. In the case of compressed video, each frame requires only a small percentage of the original bits. This reduces the data or bandwidth consumption by a factor of 5 to 12 times when using [[lossless compression]], but more commonly, [[lossy compression]] is used due to its reduction of data consumption by factors of 20 to 200.<ref>{{Cite web |last=Vatolin |first=Dmitriy |title=Lossless Video Codecs Comparison 2007 |url=https://www.compression.ru/video/codec_comparison/lossless_codecs_2007_en.html |access-date=2022-03-29 |website=www.compression.ru}}</ref>{{Failed verification|date=July 2023}} Note that it is not necessary that all frames are equally compressed by the same percentage. Instead, consider the ''average'' factor of compression for ''all'' the frames taken together.