User Guide

The Bit Budget 57
Sample Bit Budget Calculation
If you have a 100-minute (6000-second) presentation with Dolby Digital stereo audio, and
you want to write it to a DVD-5 disc, here’s how you determine the bit budget:
1 Calculate the average bit rate for both video and audio:
Disc size: 36096 Mbits ÷ Total length of presentation: 6000 seconds
Average bit rate = 6.0 Mbps
2 Calculate the average video bit rate by subtracting the audio requirements:
Average bit rate: 6.0 Mbps – Audio bit rate: 0.192 Mbps
Average video bit rate = 5.808 Mbps
3 Calculate the maximum video bit rate:
9.8 MBps – Audio bit rate: 0.192 Mbps
Maximum video bit rate = 9.608 Mbps
Note: Although in this case you could set the maximum video bit rate to 9.608 Mbps, it is
recommended that you always set the maximum to less than or equal to 9.0 MBps.