The results in the Table 6.1 show that the compression achieved using the AVS China part 2 video codec and AAC audio codec is much more than that of the AVI files. Synchronization between video and audio is achieved regardless of the TS packet start number as specified by the user to start the de-multiplexing process. Hence some random TS packets are chosen to begin the de-multiplexing process and the synchronization delay between the video and audio start frames is observed in Table 6.2. Table 6.2 Observed synchronization delay on test clip Synchronized frame Video Audio Delay Visual delay numbers chosen frame frame Start TS playback playback (msec) packet time time number Video Audio (sec) (sec) Not 100 35 52 1.2 1.207 7 perceptible Not 500 65 103 2.4 2.391 9 perceptible Not 1500 185 310 7.2 7.198 2 perceptible Not 3000 305 517 12 12.004 4 perceptible Not 6000 545 930 21.6 21.594 6 perceptible Not 10000 905 1550 36 35.990 10 perceptible Not 11500 965 1654 38.4 38.405 5 perceptible Not 13000 1055 1809 42 42.004 4 perceptible
The results in the Table 6.1 show that the compression achieved using the AVS China part 2 video codec and AAC audio codec is much more than that of the AVI files. Synchronization between video and audio is achieved regardless of the TS packet start number as specified by the user to start the de-multiplexing process. Hence some random TS packets are chosen to begin the de-multiplexing process and the synchronization delay between the video and audio start frames is observed in Table 6.2. Table 6.2 Observed synchronization delay on test clip Start TS packet number Synchronized frame numbers chosen Video frame playback time (sec) Audio frame playback time (sec) Delay (msec) Visual delay Video Audio 100 35 52 1.2 1.207 7 Not perceptible 500 65 103 2.4 2.391 9 Not perceptible 1500 185 310 7.2 7.198 2 Not perceptible 3000 305 517 12 12.004 4 Not perceptible 6000 545 930 21.6 21.594 6 Not perceptible 10000 905 1550 36 35.990 10 Not perceptible 11500 965 1654 38.4 38.405 5 Not perceptible 13000 1055 1809 42 42.004 4 Not perceptible
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