Assume that a digital video file is being displayed at a rate of 30 frames per second；the resolution of each frame is 640×480,and 24 bits are being used to represent each color.Assuming that no compression is being used,what is the bandwidth necessary to deliver this file?Next, assuming that the file has been compressed at a ratio of 200:1,what is the bandwidth necessary to deliver the compressed file?
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Answer:he bandwidth required for uncompress data is 30×640×480×3 bytes per second assuming 640×480 frames at a rate of 30 frames per second.This works out to about 26 MB/s.If the file is compressed by aratio of 200:1,then the bandwidth requirement drops to 135 KB/s.