Adobe 22030000 User Guide - Page 36
Total disc space required = 183 MB + 1 MB + 12 MB + 150 MB + 1, 200 MB = 1, 546 MB or 1.546 GB.
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ENCORE CS3 32 User Guide 2 Space required for the audio, motion menu, and slide show: • 127-minute audio stream with a data rate of 0.192 Mbps = 127 minutes x 60 seconds x 0.192 = 1,463.04 Mbits; divided by 8 bits = 182.88 MB rounded off to 183 MB. • 30-second menu audio stream = 30 seconds x 0.192 Mbps = 5.76 Mbits; divided by 8 bits = 0.72 MB rounded off to 1 MB. • 8-minute slide show audio stream = 8 minutes x 60 seconds x 0.192 Mbps = 92.16 Mbits; divided by 8 bits = 11.52 MB rounded off to 12 MB. • 30-second motion menu at 40 Mbps = 1,200 Mbits; divided by 8 bits = 150 MB. • 8-minute slide show video (all pan and zoom) at 20 Mbps = 8 minutes x 60 seconds x 20 Mbps = 9,600 Mbits; divided by 8 bits = 1,200 MB or 1.2 GB. • Total disc space required = 183 MB + 1 MB + 12 MB + 150 MB + 1,200 MB = 1,546 MB or 1.546 GB. 3 Calculate amount of disc space available for video by subtracting the total disc space required in step 2 from the total available disc space in step 1: • 24.5 GB available space - 1.546 GB required = 22.954 GB available for video. 4 Calculate the data rate of the video by dividing the disc space available for video (in step 3) by the amount of video (in seconds) the project contains. • 183,632 Mbits available (22.954 GB x 1,000 MB/GB x 8 bits per byte) divided by 7,620 seconds of video (127 minutes x 60 seconds per minute) = 24.10 Mbps. • 127 minutes of video at 24.10 Mbps = 22.96 GB. (127 x 24.10 x 60 seconds = 183,642 Mbits, divided by 8 = 22,955.25 MB, divided by 1,000 = 22.96 GB). 5 Determine the maximum video data rate for this project by subtracting the combined audio data rates from the disc's maximum video data rate of 40 Mbps. • 40 Mbps - 0.576 Mbps (0.192 + 0.192 + 0.192) = 39.424 Mbps So the video will fit on the disc using the video data rate of 24.10 Mbps, which is below the maximum video data rate of 39.424 Mbps.