It looks like this might work for you:
https://smile.amazon.com/3300STB-Con...NsaWNrPXRydWU=
Cautions:
These cheap units are sometimes described incorrectly.
I would buy through Amazon so I could return it if it doesn't do what I want.
WARNING: If you plan to use this for converting over the air programs, get a DC blocking connector for the antenna input. I have a similar one that defaults to 12 volt antenna power ON (even though you are supposed to be able to set it to permanently OFF), which will smoke a non-powered antenna or the unit itself.