why i cant downloads

Video DownloadHelper Companion App 1.3.0 doesn't work with Firefox 72.02 (Mac OS X Sierra 10.12.6)

This does not work the same since the last FF update

This app was awesome for years but has not kept up with the times. I'm running latest version but it no longer detects YouTube videos in an MP4 format. You now get a horrible watermark and the quality of the conversion is severely degraded.

In the past, this has been a useful and dynamic add-on. It has now been monetized (watermark/stamp on downloaded videos) and requires installation of an external application that is not the git-hub secured version. The "companion app" is basically just FFMPEG, which many have installed by official sources but this official one is not recognized by the add-on. This leads to unnecessary and risky additional apps. Sadly, there are no brave alternatives for websites besides YouTube, Vimeo, etc.

No sound when downloading video from this page (except for the advertising) :

https://france3-regions.francetvinfo.fr/emissions/jt-1920-franche-comte

Help please !

This thing is old and doesn't support a ton of the updated stuff and, when it does see something, it only wants to see the old 480 version more than anything else.

Can't download ADP, it will aggregating forever https://ibb.co/TPvLHzV.
Choose other besides ADP is fast when download video.
It's difficult because most video 99% is ADP, lucky if the video you would like to download have other besides ADP

Doesn't download Youtube videos without having to download its external plug-in anymore.

Used to be a good add-on that downloaded videos. Now Video DownloadHelper will make you download a desktop application to install, only to put a giant watermark in the middle of every video you download. Pretty trashy.

It works, but there's a huge and obnoxious watermark attached! In order to get rid of it, you have to either:

A) pay $30 to get a "license"
B) use another program that's completely free

choose wisely

Video and audio are not synchronized.