MPEG-II Multichannel was intended for use on region 2 DVD. Luckily, it lost out to Dolby Digital...
MPEG-II

Sound Formats

 

MPEG 2  
   

MPEG-II MULTICHANNEL

This is the 5.1 channel digital surround system originally intended for Region 2 DVD discs that was dropped in favour of Dolby Digital. MPEG-II is based around existing audio and video compression technology used mainly in home computing. The format is still used as the encoding and decoding technique for digital television in the UK, for encoding video onto DVD discs, and some early DVD Video discs carry an MPEG stereo or the lesser used Multichannel sound alternative to the required Dolby Digital. Decoders are almost non-existant and it is certain that MPEG-II Multichannel will ever be a serious threat to the DVD Dolby Digital soundtrack.