[fandangos]

@ichkriegediekri 

Can you test this one? 
It works fine for me with AMD RX550. 

Made tons of changes in this new version.
And I maybe have figured out the Ryzen problem, I had the exact opposite of the ryzen problem: whenever I play a h.264 1080p file it would render in BT.2020. 

This was caused by the Radeon driver set to 12bits in 23hz mode. 
To solve it, I changed the display to 23hz, this can be done in windows settings -> go into radeon control panel -> change 12bits to 8bits for 23hz content. 
This solved the colors for REC.709 (SDR content). 

Now if this version here doesn't solve the ryzen problem, maybe you can just do the opposite of what I did. 
Set your desktop to 23hz, go into radeon settings and enable 12bits.

Do this all while mantaining RGB Full. 

And finally I've created a small code that will put Nvidia driver into 12bits mode automatically. 
You can do this manually by going into nvidia control panel and setting 23hz and changing to RGB FULL 12bits. 
This will bypass it. 

But since it's experimental you will need to create a advancedsettings.xml with 
<advancedsettings>
   <nvidia12bits>true</nvidia12bits>
</advancedsettings>

It is disabled by default. 

Any feedback is really appreciated from Nvidia and AMD users. 

Download here:
https://mega.nz/#!vAEmnCzR!MLx9o3wUClxMo...TPjjCecGt8

@fandangos I am unable to use this latest build because it's base on python 3 and I have way too many addons that are not yet updated, so I've been using you last python 2 build and have been quite happy with it. On this latest build however I see you have made it so 12bit is triggered and was interested to know how you accomplished this and if it could be implemented in the build i'm currently using? Thank you for all you have done.

Some people require python 2.
Some require win32.

It's impossible to keep different builds for everyone.

I used NVAPI to get 12bits automatically but you can still use the python 2 build and get 12 bits.
Just go to nvidia control panel > change resolution > set use nvidia colors and while in 60hz set RGB 8bits full range.
Apply.
Change to 23hz and now 12bits will be available.
Set it and apply.
Change back to 60hz.

Now when you play a video and the refresh rate changes to 23hz it will be in 12bits color.