以philips的svcd聲音規格來說:

MPEG-1 layer II
44.1 KHz
from 32 to 384 Kbps
up to 2 stereo or 4 mono
MPEG-2 ( 5+1 ) extension


而在dvd2avi的readme中提到:
The difference between Conventional Stereo and [Dolby Surround Downmix].
Conventional Stereo (5.1->2ch)
Lo = L + c' * C + s' * Ls (+ lfe' * LFE)
Ro = R + c' * C + s' * Rs (+ lfe' * LFE)
Dolby Surround Downmix (5.1->2ch)
Ls + Rs -> 7KHz low-pass filter (in order to obey the DS spec) -> S
Lt = L + c" * C - s" * S (+ lfe" * LFE)
Rt = R + c" * C + s" * S (+ lfe" * LFE)

Lt, Rt -> Pro-Logic rematrixing (inverse computation) -> L, R, C, S (2->4ch)

故svcd是可含Dolby Surround Pro-Logic 的