And do you think it has a future?
I'm probably in for some bashing here, BUT:I did some tests a while ago, to find a way to compress AC3/DTS more than the usual 384kbit found on DVD's. I tried both AAC and OGG - The results? Not good... They aren't optimized for multichannel. The way I understand it; they don't do something similar to "Joint Stereo" to optimize bit-usage. I wasn't able to lower the bitrate much more than the 384kbit without sacrifying audible quality, and then it's quite pointless. Therefore I keep the AC3 track when I "Handbrake" my DVD's into x264 QuoteAnd do you think it has a future?Blurays store the audio in much higher bitrates. You may be able to benefit more from transcoding these to a lower bitrate. You can use eac3to to do that.Really, I think the future is not so limiting on the storage-side. I would much rather keep the encodings as they are and just buy a larger harddrive, now they are so cheap
Is there a reason to recompress audio though? 640kbps for DD in blu-ray seems more than sufficient, and probably the most compatible multichannel format there is. Pretty much the same for DTS. Blu-rays come with either an embedded DD track when the main one is TrueHD, and DTS has the DTS "core" on DTS-HD, which can be extracted very easily.As for 7.1 audio, I'm one of the early adopters, and very very few movies (and even fewer good ones) make any use of it.Also, a good reason not to recompress is that your decoder can then apply metadata such as DRC and DPLII(x), or DTS-ES matrix.
How long ago did you do those tests? The only reason I'm considering it now is because the update to libvorbis 1.3.1 mentions something about 5.1 optimizations. Is that all hype? And what is wrong with joint stereo? I understand it's actually a great way to reduce size without reducing sound quality. I seem to remember reading some flame wars around here about the very issue of the mp3 joint stereo inferiority being a myth.