Used to be good...
Now has watermarks and takes ages to download using 100% cpu ram resources.

Using 100% of my ram

AFTER taking over four hours to download and convert one YT file, it placed a QR watermark on the video demanding to be paid. Even if I paid (over $20), I would be spared the watermark only on future downloads—the hours I wasted on this video are lost. If This had been revealed beforehand, I never would have installed the add-on.

Totally useless, and you can't even see what quality are you choosing in the list, and never worked for me.

Quickly tries to get you to install a "companion app" so you can use it properly. Might be legit but I'm not risking it.

Makes you install an external program to use it for anything, which isn't monitored by Firefox. Security Risk.

Installé... viré. Pas de temps à perdre avec de l'informatique d'il y a 40 ans où tu dois installer au marteau et au burin.

Говна кусок. Ролик в 30м качает час а потом ещё 3ю5 часа конвертирует вставяя QR код на 1/8 экрана.
Это вредительство

No puedo descargar los videos de youtube ni por Mozilla ni por google chrome

Does not work without installing some sketchy looking add on software.

Asks to download "companion app". No.

Pick a different add-on.
I have used an older version of Video DownloadHelper for years.
I got a new laptop (with windows 11), installed firefox and Video DownloadHelper.
This new version doesn't do anything other than telling you that it requires a companion application.
Shame on Video DownloadHelper for doing this.