Thanks for a great script! It works good in a main feed. But...

If I go to the Videos section of a Facebook page or a group, there will be a list of videos and no option to download them one by one of all together.
Also, when I click one of the videos and watch it in an overlay box, there is no option to download the currently played video or the videos from the stripe under it. Example page: https://www.facebook.com/groups/prorealnosteurope/videos/
Please update.

you can use coccoc Web browser.