Dobly encoded stereo -> DPLII -> AC3 5.1?

Hi, Are there tools available that would enable me to take a dolby surround 2ch mix and from that create a DD 5.1 mix by running it through a DPL II decoder? DPL II creates a true 5.1 channels, and there's no reason those couldn't be re-encoded into AC3 as long as there was a way of capturing them as seperate streams. This would make it possible to listen to old dolby surround encoded material from a burnt DVD on a DD5.1 amp without having a DPL II capable amp. Anyone know if this is possible without re-sampling the analogue output of a DPLII card/amp? Cheers, Mark

this process will degrade quality much more than it will improve it. your amp can only decode DPL1 ? that's fine. decoding the original AC3, manipulating it (with DPL2 decoder, for instance), and re-encoding to AC3, is bad for its quality.

hmm.. you need to find a dpl2 software decoder..

exactly - I've had a look around but can't find any. I know PowerDVD can do it, but no idea how to get the different streams out of it without re-sampling an analogue output for each channel - not my preferred route obviously. is anyone else working on a DPL2 decoder?