Three different kinds of frames are used in the production of MPEG output: I, P, and B. When the camera and background remain stationary and just one or two actors move slowly from frame to frame, almost all of the pixels will be nearly identical from one frame to another. In this instance, just subtracting each frame from the previous one and applying JPEG to the difference would sufficient to get the desired result. While this technique works well in most circumstances, it fails horribly in situations when the camera is panning or zooming. Assume that the scenes are being sent over UDP and that the background of the scenes is stationary during the transmission. As a consequence of insufficient communication, UDP may lose certain frames. How significant do you think the first frame (I), the second frame (P), and the third frame B are?
Three different kinds of frames are used in the production of MPEG output: I, P, and B. When the camera and background remain stationary and just one or two actors move slowly from frame to frame, almost all of the pixels will be nearly identical from one frame to another. In this instance, just subtracting each frame from the previous one and applying JPEG to the difference would sufficient to get the desired result. While this technique works well in most circumstances, it fails horribly in situations when the camera is panning or zooming. Assume that the scenes are being sent over UDP and that the background of the scenes is stationary during the transmission. As a consequence of insufficient communication, UDP may lose certain frames. How significant do you think the first frame (I), the second frame (P), and the third frame B are?
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