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2. Preparing the files and running the stream 2.1 Encoding Figure 1 - Screenshot of encoder’s output of encoding tractor.y4m into tractor.bin 2.2 Compare the file size The original video file is about 2GB in compare with the encoded video file about 1.4MB which show the compression rate is over 99.9%. Figure 2 - Compare the file size 2.3 Play the video Playing of original video starts normally. However, the frame rate (frame per second) reduces after about 5 seconds and the picture motion starts laggy. Especially when the scene is zoomed out to show the tractors on the field which has a lot of fine details, the frame rate is dropped below 5 frames per second. Figure 3 - Screenshot of playing the compressed video tractor.y4m The …show more content…

total 17,6261 17,8025 17,7565 $ ./PSNRStatic 352 288 tractor.y4m rec.y4m ... total 17,4134 17,7431 17,7933 The average PSNR of the compressed video output.ts is 17.73 (average of three channels as shown in the output above). Meanwhile, the average PSNR of the received video rec.ts is 17.65 which is smaller than the compressed video output.ts indicating the video quality is reduced after transmission. 4 Project tasks 4.1 Task 1 Transmission screenshots Figure 4.1.1 - Screenshot of the server side after transmission from sever H10 to host H1 Figure 4.1.2 - Screenshot of the server side after transmission from sever H10 to host H4 Figure 4.1.3 - Screenshot of the server side after transmission from sever H10 to host H5 Figure 4.1.4 - Screenshot of the server side after transmission from sever H10 to host H6 Observation of file size and playing the video Figure 4.1.5 - Listing of received files for each host • Before transmission (output.ts): 1601384 bytes • After transmission, received file size for each host is 1592736 bytes which is smaller than the original file. It is the result of packet loss. The loss rate is small below 1%. Playing the received video (rec.ts) shows no noticeable differences to the original video (output.ts). No frames loss can be observed. Bit stream transmission charts Transmission bitrates are captured from output of the sender and receiver side for each host

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