If you are encoding for DVD-Video ( 48 kHz ), there are some encoding options you must choose. To view the encoding options, go to the Options menu and select "Encoder Options" (see Figure 7-7).
For DVD-Video, there are 2 data rate options (see Figure 7-8). For CD-Audio, there is only one data rate available.
Two sample rates are available, 48 kHz for DVD-Video, and 44.1 kHz, for CD Audio. The sample rate can be changed in this Encoder Options dialog, or on the main screen (see Figure 4-2).
The original standard for Surround Sound in movie theaters was to attenuate the rear channels by 3 dB. So, in mixing for theaters, studios have their rear channel monitors attenuated 3 dB.
Home theaters, on the other hand, have the rear channels at unity gain. So, a mix that was made with the rear monitors attenuated 3 dB will have rear channel levels that are 3 dB too high for home theater. This option takes care of that difference. So, in general, you use this option if creating a DVD-Video using a Surround master that was originally mixed for movie theaters.