PhilipZ

Multi channel downmix on NASA TV UHD works, about AC3+ audio - I have no idea how to fix this.

Yes, I know that downmix is working, but prefer to use multichannel sound. Please, let me know if you find solution.

Thank you very much Zeros.

With latest image (I try only this from 13 July) most of issues I have in the past with openPLi images are solved. Now triple tuners DVB-S/C/T work like in DreamOS - can watch TV from DVB-S or DVB-C and record/PIP from DVB-C. Only one issue still remain - I use multichannel amplifier for sound via HDMI (CEC-HDMI is on and working). Amplifier support all current formats for digital audio. Unfortunately with all version of openPLi (including your latest image) when watch 4K channels with AC3+ audio there is no sound. Only way to have sound is to turn on downsample. In original DreamOS images no such issue. For example 13.0E Hotbird 11373H/27500 - NASA UHD
And one small issue - oscam-emu died immediately after start. Updating with latest version oscam-svn11425-arm_dream-webif-emu clear the issue.