Exercise 4. Consider the figure below. Suppose that video is encoded at a fixed bit rate, and thus each video block contains video frames that are to be played out over the same fixed amount of time, . The server transmits the first video block at to, the second block at to + , the third block at to + 2A, and so on. Once the client begins playout, each block should be played out time units after the previous block Constant bit rate video transmission by server Video reception at client 8 to Time Figure 2: Transmission and Reception over time (a) Suppose that the client begins playout as soon as the first block arrives at t. In the figure above, how many blocks of video (including the first block) will have arrived at the client in time for their (b) Suppose that the client begins playout now at ti +A. How many blocks of video (including the first (c) In the same scenario at (b) above, what is the largest number of blocks that is ever stored in the (d) What is the smallest playout delay at the client, such that every video block has arrived in time for playout? block) will have arrived at the client in time for their playout? client buffer, awaiting playout? its playout