I've used this app for years and have been very satisfied with it. However, it appears youtube, vimeo and many other sites have figured out how to "break" it. Now, if it downloads at all, it gets hung on "aggregating" for an hour or more. Sadly, this add on is no longer very functional, it's hit or miss if it's going to work,so I cannot recommend it.

I used to use this plug in on a previous Mac OS and was very happy with it (that's why I have avoided a one star rating). However, while downloading it to run with Firefox on Mac OSX Big Sur, I have hit a brick wall. A companion app is requested but the OS states that it is out of date and cannot be checked for malware. Attempts to circumvent this security barrier have failed, the companion app won't run and thus Video Download Helper is dead in the water.

Leaves a large watermark on the upper left corner of the video.

All worked fine till now. Unfortunately, there is something wrong with the so called "firm app" or "company app" (translated from polish, as it is written). The app did not alert me about bad files while downloading, about any errors. Just downloaded files and... files were not complete. About 70% of files were downloaded with error of just being not complete. So my recommendation is to NOT use the firm app. And to use the browser standard download option.

Дополнение перестало работать с сайтом https://1plus1.video :((

Streaming video is not downloaded. The companion app is installed.

Works pretty well, you don't need an extension to save most videos but this extension has plenty of options to make sure you can download any video.

IMAGINE WATERMARKING A VIDEO BECAUSE YOU SAVE THE USER 5 SECONDS IN FFMPEG LOOOOOOOOL

This extension used to be my favorite, and my go to for youtube, or other videos to download. Unfortunately the extension seems to have really decreased in quality.

By adding water marks, and downloading videos and music in very low quality it has really been frustraiting. Even if I set it to DL in highest, it forces it to download in a much lower quality version.

L'application était très bien avant. Mais depuis qu'elle est passée payante, le fait de devoir télécharger un logiciel (avec des trackers ?) et d'avoir des logo imprimés important sur les vidéos pour influencer à payer un prix prohibitifs pour une appli qu'on utilise une ou deux fois par mois... L'appli s'est aussi complexifiée sans que cela soit vraiment justifié par le résultat.

Good extansion

En el momento que pide una aplicación EXTERNA pierde su calidad de aditamento. Hay otras herramientas que hacen lo mismo sin mayor instalaciones.

i need external application ?! and I have to pay? xd

It stopped saving my video downloads for no apparent reason.

It puts a QR on the video now. Before that, it was a good add-on.. Good old days

The add-on is a good add-on, but the license issues, around $30, is too expensive for a simple add-on. The next upgrade of FF may leave the extension dead, and the $30, in the trash.

Very disappointing, It does less and less now. I used to love this but it seems to only do older videos. I have not been able to use on many platforms now. I think its out of date too quick.27/08/21.

It doesn't work on udemy.com