How many DTS-HD streams do I have to encode for different playback scenarios?
Only one stream! One of the unique benefits of DTS-HD is one-stream backward compatibility. DTS-HD Master Audio™ and DTS-HD High Resolution Audio™ streams contain 5.1 and stereo downmix metadata, all in one stream, in addition to a backward compatible DTS Digital Surround core at up to 1509 kbps. The DTS Digital Surround core will also downmix properly to match the playback system, ensuring compatibility with all DTS decoders worldwide.