Type of video signal which has been compressed (using a CODEC) in preparation for transmission. In the past, compressed video has been inferior in quality to full-motion video because of the reduced number of frames per second (30) capability. However, there has been rapid advances made in compression methods (and CODECs) allowing for near-full-motion video quality being transmitted over the less expensive copper wiring.
this processes video images and transmits changes from one frame to the next which reduces the bandwidth to send them over a telecommunications channel; reduces cost. (See survey item 10)
digital video segment that has been reduced in size by using computer algorithms. The compressed version usually has a lower resolution than the uncompressed version. The better the compression algorithm, the greater the reduction in size without the corresponding reduction in resolution.
A video that results from an operation known as video compression, which stores only the data points that change from frame to frame.
A video signal requiring less information to transmit than broadcast-quality or full-motion video. Digital technology is used to encode and compress the signal. Picture quality is generally not as good as full-motion; quick movements often appear blurred. The use of compressed video brings experts into the classroom for the cost of a long distance phone call. See codec.
Video images that have been processed to reduce the amount of bandwidth needed to capture the necessary information so that the information can be sent over a telephone network.
This is video that has been compressed into lower bit rates for easier Internet transmission, often along narrower bandwidths. Video or audio is compressed to shrink file size, ensuring acceptable transfer speed. Compressed video is often of a noticeably lower quality.
By compressing normal TV transmission into a fraction of its former bandwidth by a codec, the resulting compressed video can be transmitted more economically over a smaller carrier. Some information is sacri-ficed in the process, which may result in diminished picture and sound quality. Squeezing the video informa-tion can be accomplished by reducing the quality (sending fewer frames in a second or displaying the infor-mation in a smaller window) or by eliminating redundancy.
n. Video resulting from the process of digitally encoding and decoding a video image or segment using a variety of computer techniques to reduce the amount of data required to represent the content accurately.
Video signals compressed in order to reduce the bandwidth needed for transmission. Some information is sacrificed in the process, which may result in lower quality.
Technology which makes it possible to transmit multiple high quality television signals simultaneously in the amount of bandwidth previously needed to carry only a single television signal. (See also: FDMA)
Video images that have been processed to remove redundant information, thereby reducing the amount of bandwidth required to send them over a telecommunications channel. See video compression.
Video images processed to remove extraneous information, facilitating the transmission of information over telephone lines or other narrow bandwidth carriers.
video images which have been processed to remove redundant information, reducing the amount of bandwidth needed to capture the necessary information so that the information can be sent over narrowband carriers such as a T1 telephone line.
A method for sending video signals using less bandwidth than normal by transmitting only changes in moving frames rather than full motion. The reconstituted image exhibits some motion and, depending on the available bandwidth and capacity of the transmitters and receivers, the motion may appear somewhat irregular. This effect occurs in compressed video technology because the moving areas of the image are only approximated.
When the vast amount of information in a normal TV transmission is squeezed into a fraction of its former bandwidth by a codec, the resulting compressed video can be transmitted more economically over a smaller carrier. Some information is sacrificed in the process, which may result in diminished picture and sound quality. An uncompressed NTSC signal requires about 90 Mbps of throughput, greatly exceeding the speed of all but the fastest and shortest of today's networks. Squeezing the video information can be accomplished by reducing the quality (sending fewer frames in a second or displaying the information in a smaller window) or by eliminating redundancy.
When video signals are downsized to allow travel along a smaller carrier.
A digital video image or segment that has been processed using a variety of computer algorithms and other techniques to reduce the amount of data required to accurately represent the content and thus the space required to store the content.
instruction given in a special classroom equipped with special computers, called codecs, which translate two way audio and video signals between two (point-to-point) or more (multipoint) sites. Compression of the data allows for huge amounts of information to travel back and forth between or among sites; Garrett College's MIDLN system uses compressed video technology
A digital transmission process used to transmit a video signal. When the vast amount of information in a video transmission is compressed into a fraction of its former bandwidth by a codec, the resulting compressed video can be transmitted more economically and through existing phone lines. While compressed video requires less bandwidth, signal quality may be reduced. As a result, picture quality is generally not as good as full-motion video. Quick motions often appear somewhat blurred. This quality issue is becoming less of a concern as more and more playback systems for compressed video run at 30 frames per second.
Processed video images; transmits changes from one frame to the next which reduces the bandwidth to send them over a telecommunications channel which reduces cost. Also called bandwidth compression or bit rate reduction.
Compression is the reduction in size of data in order to save space or transmission time. Transmission of compressed video over a communications network requires sophisticated compression algorithms. When the vast amount of information in a normal tv transmission is squeezed into a fraction of its former bandwidth by a codec, the resulting compressed video can be transmitted more economically over a smaller carrier signal. Some information is sacrificed in the process, which may result in diminished picture and sound quality. Some videoconferencing systems offer both proprietary and standard compression algorithms. You'll want to make sure that you know whether your system is proprietary or standard before you buy as this will limit the types of videoconferences in which you can participate.
When large amounts of video and audio information are compressed into a fraction of their former size