So for a while now I've been pretty frustrated about what should be a pretty simple task - creating 4k comps. I can't set a pixel value higher than the normal 1920 x 1080. Am I doing something wrong? Thanks in advance.
1) What Hitfilm version are you using. Express 4 does not support 4k. Express 2017 does. Pro always supports 4k.
2) You need to have enough video ram to support 4k. Refer to this thread. Specifically #3.