No Matter what settings I pick on Resolve I cant get a timeline correctly imported. I either get squeezed footage or cropped or black bars etc. I never had to deal with mixed file formats. Can anyone offer any advice?
I thought DaVinci didn't support RAW Sony EX cam or P2 footage? Did you convert them to some other codec? This is why I have found it is easier to edit the RAW footage and then export out a clip of the full edited piece and then do the auto scene detection. DaVinci does an amazing job.
To change a clips aspect ratio you can Right click on the clip in the EDIT window. Choose Clip Attributes in the drop down menu and change the Pixel Aspect Ratio. You'll probably want DVCPRO HD. However I have had trouble with P2 footage shot at 1888 x 1062 which is why I prefer to just export out my completed video and do the scene detection. Hope this helps and best of luck.
If the end result is all 1920x1080 HD, then I'd convert all the clips in advance to a common format like ProRes 422 HQ -- I'm not sure 444 will buy you anything for 8-bit material like this -- and then bring the ProRes copies into daVinci Resolve. Mixing weird camera formats on the same timeline is theoretically possible, but fraught with problems.