[romandesign]

Just in case someone is searching for the same solution - Kodi DSPlayer transcoding Dolby TrueHD to AC3 over SP/DIF for older receiver incompatible with TrueHD, while bitstreaming DTS, Dolby Digital AC3, DTS-HD, looks like I made it work. Here's what worked for me: I have installed AC3Filter, then set in DSPlayer settings audio renderer to Saenar, with internal filters, ignore system channel mixer, enable bitstreaming, and added AC3Filter as an external filter. In LAV Audio I checked "bitstreaming" for DTS, Dolby AC3, DTS-HD but NOT TrueHD. Mixing is enabled - that makes it decode TrueHD into 6-channel LPCM. Bitstreaming means that at that point everything that my older DENON receiver can handle goes to passthrough, but TrueHD gets decoded and passed on further in the filter chain - where it's picked up by AC3Filter - shown in the filter dialog as LPCM stream. In AC3Filter I ticked "enable SP/DIF" where possible, "encode AC3" is set for everything, I manually assigned matrix mixing, so side and back channels are mixed into L and R surrounds and LFE mixed in a bit into main L and R and to the sub. I'm not in front on that PC so I'm quoting from memory, but that's the picture. Now receiver recognizes truehd streams as "Dolby Digital" and it's so much better than Dolby Pro Logic it created from stereo stream before. Yay! I'm very fond of my 2002 DENON receiver, it sounds amazing with my JBL Studio series speakers, I have no intention of upgrading. It's difficult to find such a good amp for a reasonable price now. And I have projection home theater, so all the video routing is not relevant for me...