Generate Thumbnails from ACTUAL VIDEO BACKGROUND, NOT AI generated inspired content

This is super easy but I would actually potentially use it in conjunction with this:

https://tajaai.featurebase.app/p/upload-face-to-be-used-for-thumbnail

I just want a simple image. Take the image I have, use the background, put text on it. Done deal. No need to use credits to use some AI tool, just maybe some finesse to put text in a place where I could change it and/or add my face (per the other feature). Thank you!