Dec 5 2020
Down again.

Original:
Thank you for fixing! This is one of those add-ons I can't live without.

Version 1.1.2 resolve the problem "pathname is undefined". Thnks

this app is so good love it

Version 1.1.2 doesn't work for me on any video, with or without music. Displays "Unable to retrieve video metadata." Version 0.9.4 also doesn't work for me.
Having trouble with another Firefox extension named VideoDownloadHelper also.
Both of these quit working last week after installing the latest Windows10 updates.

Thank you
Now works fine

Thanks for updating this.

Is there a way around it? can the developer actually fix this issue ?

i tried to install the 0.9.4 version, is not working, i do not know if i done something wrong.
edit: only works on videos random, but not in music videos

When downgrading to version 0.94 (the one that actually still works) remember to:
1. remove version 1.0.9 found in Firefox extensions:
type "about:addons" in the top address/search bar
2. download the old version 0.94
https://addons.mozilla.org/en-CA/firefox/addon/youtube_downloader_webx/versions/
3. disable automatic updates

Otherwise Firefox will "upgrade" it to 1.0.9 and this extension will stop working!

The 0.94 version sorta sucks since you cannot rename the files prior to downloading, only after so you mus wait if it is a huge video file.

[Review 11-3-2020]
Just posting review to signal boost why it stopped working:

Apparently 10-23-2020, the RIAA filed a DMCA takedown against the code repositories, used by extensions like this, to download YT videos. Cause "piracy". I too thought it was the Firefox update, but no. It's been said that v0.9.4 still works, and it seems to, but not for anything with "music".

A few days ago I saved a couple videos with "music", but now, those types of videos are blocked, with a new "cannot resolve signature" error. Even indie YT music NOT licensed by a big label seems affected.

Videos without "music" seem to work though. Note that v0.9.4 links are a little more confusing. If you want the 60fps vids, I'm pretty sure they're available, but not labeled. You'll see two of the same labels (like two 720p links), but one will have a larger file size - that should be the 60fps one.

Here's more info:
https://www.xda-developers.com/youtube-dl-riaa-dmca/

"pathname is undefined" bug

hi

"pathname is undefined" bug, please fix and i will update to 5 stars

не работает

Version 0.9.4 still works. https://addons.mozilla.org/firefox/addon/youtube_downloader_webx/versions/

This was great, now it doesn't down load at all.

最近几天不能用了，不知道为什么，是被屏蔽了吗？望解决

ha dejado de funcionar despues de la ultima actualizacion de windows 10