Ant Video Downloader was rendered obsolete with the new version of FF. I tried this as a replacement but it is unsatisfactory. Some of the pages I need to archive videos from break the videos up into segments. Ant automatically downloaded each segment and reassembled them into a single video file. The Startpage 24 Video Downloader does none of that. It just allows me to download each segment separately which is no real help.

This is important enough to me that I'm going to try to revert back to the previous version of FF until Ant updates its plugin.