P.S. I'm using CDex for ripping and LAME for encoding with the following settings: q=0;Very High Quality, Stereo, 320kbps.
My DVD rips are all encoded with alt ABR 128 and the surround info is fine.
Take a DVD with live music performance, with a PROPERLY mastered & recorded 5.1 AC3 @448 kbps, then encode it to ABR 128
you don't need -ms for surround, mj is just fine!
Hi MgzThis is (unfortunately) not a hardware malfunction. Dolby Pro-logic was developed as a mechanism for encoding a front center and surround channel into a standard stereo stream (i.e. four channels from a standard two-channel stereo stream.)The mechanism relies heavily on stereo imaging (as described here and here.)The same effect (sound from the center and surround channels) may occur on non-DPL tracks if there are sufficiently out-of-phase stereo sounds, such as heavy reverb or recording the audience in stereo on live shows.Lossy encoders tend to sacrifice stereo information at lower bitrates, since this leaves more bandwidth for removing more apparent artifacts. Any deviation from the original recording could result in unusual sounds from the center and surround channels.DPL and DPL-II are discribed in-depth on the Dolby Web Site.