Too often the file titles start with the resolution (like 1920x1080 how to make a review 101.mp4) and there is always many downloads possible, we have to check and pick the biggest file to download (not the files with just a couple kb of size) this is very annoying, except that it work nicely.

By installing the additional program, it is indeed possible to record movies. Without the additional program, it is impossible.
First downside: Since December 19, 2020, films have been recorded without the duration information, or rather 00:00:00, which is a problem for playback from a disc on the server on the livebox.

Second downside: since the last update you forced us to do, it is impossible to record movies on some sites like http://gopzay.com or http://evdod.com or http: // kempox .com / or http://piopar.com/
And this on my 4 PCs. So I will say:
Worked great before December 19, 2020 and hasn't worked at all since the last Update in 2021.

Works fine. Would be nice and logical to add (a converter although im well aware this would just cause problems) predefined output to mp4

Working well. Automatically combines segments. But does not do this for TedX talks.

I tried many video downloaders. This is the most reliable and works on all websites I tried.
One thing I don't like: it seems to share the settings for all firefox-profiles on this computer. It should allow different setups (download directories etc) for each profile.

The extension works pretty good where many other video downloaders fail (and it's free, unlike others for the same functionability!), so it's highly recommendable.

The things I liked most were that it supports most sites (even streaming sites), and it even allows you to only download the video or the audio parts of the video (it might download it as a weird extension for audio sometimes, but you can just change it to opus and edit it with audacity or other audio editor to get the right file format).

It also will tell you the resolution of the video of the site you are in (when there is one, of course), but it will fetch it only once you are actually playing the video in that resolution.

There were just 2 things that I missed compared to other video downloaders tho...

- Being able to change the name of the video before or after downloading it (You can't choose the name of the video you download, it gets pre-fetched from the site)
- Queueing downloads. You might want to download a few videos in a row some time... and you'd usually not want to have more than 2-3 videos downloading at the same time (AVD just adds each video you choose to download to the downloads list and starts right away, without any option to limit the amount of downloads at a time and download the rest once one download finished).

Why now totally can't detect video include youtube.

Best Video down loader Firefox extension found on options. Not offered for other browsers. Would like to use it across all browsers.

便利です又分かりやすいです

The Best-A downloader. Simply. Regards.