Maybe a stupid question, but what is DTS audio?
It’s a different audio codec, that’s all. AC3 (aka Dolby Digital) is owned by Dolby, and DTS is owned by…well, DTS.
Standard AC3 tracks max out at 640kbps, while standard DTS tracks can go up to approximately 1500kbps.
It’s a way of delivering higher-quality lossy audio while still saving on file size compared to lossless codecs like Dolby TrueHD and DTS-HD MA.
Although I do standard DTS encoding because I simply don’t have the DTS-HD MA encoder suite; if I had that, I’d be making lossless encodes for Hal rather than the 1500kbps DTS encodes.