I need some help re-encoding 1080p and 4K video's to PSP format

Hi there,

I'm trying to re-encode a bunch of 1080p and 4K video's in Handbrake to make them fit perfectly on the screen of my PSP.

The problem; the resolution of the PSP's screen is 480x272, which is not true 16:9. When I try to set the resolution to 480x272 in Handbrake, the final dimensions are always 480x270.

So I tried setting the resolution to 484x272 and added custom cropping of 2 pixels on both the left and right side of the video to make it 480x272, but this is not working. The final dimensions always stay at 484x272, no matter what settings I try.

I searched the internet for hours, but I can't seem to find any answers. Is this even possible at all? If it's possible, how can I make this work?