It can not work on android.
Firefox 无法在 jar:file:///data/user/0/org.mozilla.firefox/files/mozilla/2me53f7x.default/extensions/ffext_basicvideoext@startpage24.xpi!/options.html 找到该文件。

****** AVOID AVOID AVOID ******

Added a link to a video saying "install latest Flash player" (which is probably a virus) and blurred the entire video.

I disabled this extension, refreshed the page, & the video played normally.

The addon lies to you and says stuff like WEBM is impossible to download UNLESS you buy their own MALWARE ridden software !
Also, in Firefox addons, click on the addons OPTIONS, it will say 'File not found' - super dodgy !
The dev is, if not an actual scammer, then someone who doesn't understand the Firefox addon community ethos and is trying to monetize the addon. Greedy b**t**d.

Já foi bom um dia, já foi bem avaliado por mim, hoje tudo que você vai fazer nele, ele pede um app auxiliar, cilada.

stopped working. needs update.

Totally useless.

Funzionava perfettamente, ora non trova più nulla, su stessi siti e stessi tipi di video... Già provato a rimuovere e rimettere, ma niente, morto...

Not sure how is it supposed to work.
It adds a button in the toolbar, which lists available formats. But none of them allow you to download anything. Further those above 720p are only links to developer website (for purchasing the paid version).

hkhklöllk

Its just like the rest of these video downloaders, which is said to be much better than they actually are.

This flat out said useless tool parts the videos in to small chunks of about 3.98 MB, which is about the same size as every single one of the rest of the useless video downloader add-ons i have tried for Firefox that also operates in such a completely useless way.

And no, its not because of the streams being stored that way on the server in small chuncks, they are actually stored on the tested streaming site as single files of about 2.4 GB size.
That was tested on a friends computer, where he tried using Firefox and IDM on that streaming site.

doesn`t work on pornhub

Don't waste your time. This app is completely useless!!

Casi igual o lo mismo a inutil.

not work on youtube

не загружает видео с геткурс