[HELP] how to change color space standard correctly when upscale footage?

[ssdde]

i read from internet that when converting SD footage to HD is tricky because they don’t use the same color space standards.
SD uses Rec601 specifications and HD Rec709

so when i try to upscale 720×480 to 1920×1280, is it need to set like this? what's the pre and post clipping mean?




if check the "Adjust by resolution Clipping", it will change the color space standard automaticlly by video resolution before and encoded?