From developer:
1. Generate file and playback file will need to meet the same define.
2. 4K UHD m2ts is limited by UHD define, so m2ts in UHD can be playback with dolby vison
so does mp4 dolby vision.
Dolby Ltd. defined some pdfs such as DolbyVisionInISOBMFFSpecification_v1.3, the Box or TV have implement as DolbyVisionInISOBMFFSpecification_v1.3 says , so such mp4 files can be played.
so does mkv dolby vision. mkv dolby vision is accepted by mkvtoolnix and some BOX or Zidoo 1000pro, New Chromecast with Google TV, NVIDIA Shield 2019 Pro, and other devices.
But Single m2ts not such,
We only can generate m2ts with Dolby Vision data, but no players can play.
Or we have to use m2ts in UHD disc iso or folder.