We compress the video with the pattern GoP (16 : 3) by using MPEG coding. Assume that the average compression ratios of frame I, frame P, and frame B are 1:5, 1:20, and 1:60, respectively. We put the compressed frames in 512 B packets and send them. The header size of each packet is 5% of the size of packet. Each packet contains information on one frame and its header, Each frame can be sent in multiple packets. Picture resolution is 196 × 144 for a video at 32 fps. (a)What is the compression ratio in this pattern? (b)What is the order of coding and transmitting frames in this pattern? (c)If frame 6 is lost while transmission, which frames will be faulty? (d)If frame 5 is lost while transmission, which frames will be faulty? (e)If frame 17 is lost while transmission, which frames will be faulty? (f)Find the size of uncompressed image frame? (g)In how many packets can an I-frame be transmitted on average? (h)In how many packets can an I-frame be transmitted on average?
We compress the video with the pattern GoP (16 : 3) by using MPEG coding. Assume that the average compression ratios of frame I, frame P, and frame B are 1:5, 1:20, and 1:60, respectively. We put the compressed frames in 512 B packets and send them. The header size of each packet is 5% of the size of packet. Each packet contains information on one frame and its header, Each frame can be sent in multiple packets. Picture resolution is 196 × 144 for a video at 32 fps.
(a)What is the compression ratio in this pattern?
(b)What is the order of coding and transmitting frames in this pattern?
(c)If frame 6 is lost while transmission, which frames will be faulty?
(d)If frame 5 is lost while transmission, which frames will be faulty?
(e)If frame 17 is lost while transmission, which frames will be faulty?
(f)Find the size of uncompressed image frame?
(g)In how many packets can an I-frame be transmitted on average?
(h)In how many packets can an I-frame be transmitted on average?
(i)In how many packets can an I-frame be transmitted on average?
(j)Compute the bandwidth of this video.
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