I am reaching my limits because of 24p. I understand that original bluerays have a frame rate of 24p. i.e. I have the Atmos demo as a blueray, BDMV, on the hard disk and it can be played.
On the Atmos question. (By the way: for Kodi you have to start with 'Music' for mka, for ts of course with 'Video'). Kodi shows in the earlier mentioned demo disc under 'Audio settings: Audio stream: English - trueHD 7.1 - 8 channels (1/2)
My amplifier, Pioneer LX86, doesn't do that. The speaker does. 1. Dolby Atmos. I downloaded the Dolby Atmos Demonstration Disc 2014. Was a bluray, so with m2ts streams. In Android 11 sound settings on passthrough. Result: excellent picture, even without passthrough, but no sound.