Putting P7 is because P7 can be converted to P8, but not vice versa

. You can operate it on your own computer. For the sake of species preservation, you will not put too many versions.

https://github.com/quietvoid/dovi_tool is good in English, you can see for yourself, after all, it is open source,

but a lot of Dolby Vision is in the development state, and the tools may have to be updated all the time.

dovi_tool -m 2 -c convert --discard file.hevc
or extract-rpu and then hit it back.

In addition, there may be other ways in the future, depending on the progress of a boss