Raspberry Pi 4 B (1GB): No TrueHD or DTS-HD audio options

Hi,

Just got myself a Raspberry Pi 4 1GB in preparation for my 4K HDR Christmas present.
In the meantime I have a Pioneer 5.1 receiver which supports Dolby ATMOS, which I would like to use of course.
With audio passthru enabled in LE (LibreELEC-RPi4.arm-9.1.001), sync to playback disabled and display refresh rate set to 60 fps, DTS-HD and TrueHD are not shown in the Kodi settings.4Playback of TrueHD ATMOS results in a 5.1 PCM downmix being output - the work to do this causes even the Pi 4 to stutter.

Surely the Pi4's HDMI 2.0 output should support passthru of TrueHD and DTS-HD?

Please help!

Quote from blueribb

See post #59 on this page:

LibreELEC (Leia) 9.2 ALPHA1 with Raspberry Pi 4B Support

Thanks for that pointer, it would have taken me months to find out the information that audio passthru is not supported for DTS-HD and TrueHD on the Raspberry Pi4.

I would beg the admins to not lock this thread since it is a direct line to a specific problem.

Is the problem one of drivers or missing HDMI handshaking, or something else ? - It is said that "HBR audio support is planned for the future" and that it would be a matter of weeks rather than days. Surely it is just a question of squirting the raw audio stream at the AVR, or is some rocketscience involved?

Thanks in advance