You can, eventually, fix it in Handbrake, but it takes a complete recode - and that could take hours.
Then there is the HB learning curve - that could take months, or minutes, depending where you look:
If you only have a few of these items that misbehave, you may just want to use the Zoom function of your TV - 'cause that’s basically why it’s there. It’s not dynamic, so be sure to ‘unzoom’ after watching.
