If I understand correctly, you use regular download in FDM via Flasghot catching.
Have you tried to use flash video monitoring directly in FDM with FDM add-on for Firefox, not with FlashGot add-on?
I prefer using Flashgot for its ability to highlight multiple links and download them with a single command. But I went ahead and tried the FDM flash video download feature as you suggested.
Note that I am on Firefox 7.0.1 due to an incompatibility between a security extension I use and newer versions of FF. Their updates tend to trail the latest releases of Firefox by a few months (I just noticed their extension for FFv8 is now out, so I will be upgrading this weekend).
I followed the instructions on this page: http://www.freedownloadmanager.org/youtube.htm
Following steps 1-5, copy/pasting in the URL of the YouTube video directly into the FDM main window, results in downloading a file named 'watch'. It seems to contain the HTML of the YouTube web page.
Going further down, following steps 1-3 and using FDM's context menu sort of works:
- If I follow the instructions and right-click on the thumbnail from a list of videos, and select Download Video with FDM, it results in a "There were no flash videos found on this page" error.
- If I first click on the video to load its page and start it playing, then right-clicking and selecting Download Video with FDM works and properly transfers the filename (plus some cruft about youtube). However, it only works for unaffiliated YouTube videos.
If I try the same on a YouTube video within a channel, the filename I get is the channel name, not the video name. e.g. If I go to:http://www.youtube.com/user/HuskyStarcraft/featured
and select Download Video with FDM, the resulting video is named "HuskyStarcraft's Channel - YouTube.mp4". So if I selected a half dozen videos to download from a channel this way, I'd end up with a half dozen files with the same filename except a (1), (2), (3), etc. at the end.
I suppose this will have to do. I'll just have to make sure I open up the videos in a new tab to break it out of the channel first, instead of viewing them within the channel. But I really would suggest you clean up these features and fix the comment-to-filename bug. FDM is a great program otherwise.