I am mixing a live concert video DVD for a band and I have a problem with where to head with the overall level. After years of mixing and mastering for CD, I am used to peaking close to 0dB Fs. After investigating levels on commercial DVDs, I find that they often only peak to around -12dB. Some music DVDs however, have really hot CD kind of levels. The Led Zeppelin live DVD for instance peaks to -0.5dB on both the PCM stereo and the DSD tracks, but is about 8dB lower on the AC3 track.. I believe there is some reason for keeping levels relatively low before AC3 encoding, is this simply for compatibility with feature films? Do you think it would be rather irresponsible to make my stereo mix that hot? Should I then drop the peak level of the surround mix? :?