Okay, I made a comp with an mpeg (1440x1080, 1.33) , and it looked squished, so I changed the comp settings to 1920x1080, square pixels. BUT then when I tried to use the camera trackers it gave me the error "3d Camer tracker: Layer size must match composition and use default transform values." Problem is, I can't match the layer to the comp otherwise its squishesd. How do i fix this?
Depends on your delivery requirements. If you need to output 1440x1080, turn on the pixel aspect preview and use the original dimension file. If you want the final at 1920x1080, you can precompose the scaled layer and 3D camera track the precomp.