Originally posted by: MeBeJedi
"as I have found no noticable difference betwen this (at 224/256kbps)"

Will DVD accept a stereo AC3 signal above 192kbps?

It certainly will!
The upperlimit for bitrate is about 384kbps.
Lowest limit is 128kbps.

Take a look at lordsmurf's site as he has a nice summary:

http://www.digitalfaq.com/dvdguides/authorburn/intro.htm#audio

I generally use either 224kbps (equivalent to most MP2 audio streams from digital broadcasts) or 256kbps for most of my VHS->DVD archives.
The other trick is normalising the audio prior to encoding. A lot of commercial DVDs have soft audio compared with 'old' VHS or TV broadcasts. I normalise all mine to -2dB +/- 0.5dB (DVD standard states -2dB I think). This makes it a lot better and helps me when I need to filter out any noise.

ntrprs