Compatible H.264 for Premiere (lossless NVENC)

[Dogway]

Hello. Aside of Photoshop I'm not too familiar with Adobe products. What kind of limitations does Premiere have towards H.264 codec? I'm talking about settings; Hi10P, levels, 444...

I have an OBS encoded lossless NVENC mp4 (444) and it fails to render in Premiere, image shows gray. I read somewhere that some formats can be fooled by changing the extension to avi, and hence rendering with the system's media filters and not adobes (i.e. using LAVFilters) but it didn't work for me. Maybe I can wrap the video into an avisynth script or a graphstudio file. Any help is welcome to edit lossless NVENC.

[Dogway]

I found this page where it shows how to import avs files into premiere, but it will only work if everything is in 64bit, which I don't use since there are many missing 64bit components in Avisynth x64. Plus v.2.5.8 is mandatory, a version I left long ago...