video compression
Compression of sequences of images. Video compression algorithms use the fact that there are usually only small changes from one "frame" to the next so they only need to encode the starting frame and a sequence of differences between frames. This is known as "inter-frame coding" or "3D coding". MPEG is a committee producing standards in this area and also the name of their standard algorithm. H.261 is another standard. See also Integrated Information Technology, 3DO, full-motion video, Online Media. | ||||
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Video compression definition was found in categories: Computer & Internet(1) Language, Idioms & Slang(1) Science & Technology(1) Encyclopedia(1)
Video compression Definition from Computer & Internet Dictionaries & Glossaries
| Multimedia Glossary |
Compression (video)
Process which reduces the number of bytes required to store/transmit digital video . Typical schemes involve comparing frames and coding-out, or eliminating, inter-frame and intra-frame redundancies. The compression may be done by software, hardware or a combination of the two. On playback, the data is decompressed. See CODEC . Why compress video data? To reduce storage space and to playback faster. A full-screen (640 x 480 pixels ) image with 16.4 million colors takes up 1 Mb of memory. For full-motion, the computer needs to display 30 pictures/frames per second, thus requiring it to "shuffle" 30 Mb of data every second. Storing 10 seconds of video would require 300 Mb. Jan Ozer, President of Doceo Publishing , is the foremost authority on digital video/CODEC's.
Process which reduces the number of bytes required to store/transmit digital video . Typical schemes involve comparing frames and coding-out, or eliminating, inter-frame and intra-frame redundancies. The compression may be done by software, hardware or a combination of the two. On playback, the data is decompressed. See CODEC . Why compress video data? To reduce storage space and to playback faster. A full-screen (640 x 480 pixels ) image with 16.4 million colors takes up 1 Mb of memory. For full-motion, the computer needs to display 30 pictures/frames per second, thus requiring it to "shuffle" 30 Mb of data every second. Storing 10 seconds of video would require 300 Mb. Jan Ozer, President of Doceo Publishing , is the foremost authority on digital video/CODEC's.
Video compression Definition from Language, Idioms & Slang Dictionaries & Glossaries
| hEnglish - advanced version |
video compression
video compression
compression of sequences of images. video compression algorithms use the fact that there are usually only small changes from one "frame" to the next so they only need to encode the starting frame and a sequence of differences between frames. this is known as "inter-frame coding" or "3d coding".
video compression
compression of sequences of images. video compression algorithms use the fact that there are usually only small changes from one "frame" to the next so they only need to encode the starting frame and a sequence of differences between frames. this is known as "inter-frame coding" or "3d coding".
Video compression Definition from Science & Technology Dictionaries & Glossaries
| Satellite TV Glossary |
Video Compression
A new, soon to be used technology that permits the squeezing of multiple channels into the bandwidth of one satellite transponder.
A new, soon to be used technology that permits the squeezing of multiple channels into the bandwidth of one satellite transponder.
Video compression Definition from Encyclopedia Dictionaries & Glossaries
| Wikipedia English - The Free Encyclopedia |
Video compression
Video compression refers to reducing the quantity of data used to represent video images, and this is almost always coupled with the goal of retaining as much of the original's quality as possible. Compressed video can effectively reduce the bandwidth required to transmit digital video via terrestrial broadcast, via cable, or via satellite services.
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