It's an important and easy to use extension to Firefox. Just start your video, wait some 20 to 50 seconds to allow synchronization to be initialized, then click the three balls logo of the extension, and click the row where the word "streaming" appears in the open curtain-menu. Video DownloadHelper will start the conversion to standard .mp4 file warning you of the running process with a "1" over the three-balls logo.
It also warns you when your conversion is accomplished, so you'll find your complete .mp4 file under 'yourcomputername'/dwhelper.
Really one of the best downloaders, with recently improved easier interface.
Best dpwnloader, now also easy to use/

I am so pleased to have this program, it gives us hours of pleasure. Thank you

Sehr gutes Videodownload Tool. Man kann Videos u.a. speichern von fast jeder Seite.
Allerdings ist das Tool so Umfangreich das es ohne ein paar Grundkenntnisse ziemlich aufwendig ist die Einstellungsmöglichkeiten ganz auszunutzen.
Hinweise oder kurze Erklärungen bei den jeweiligen Funktionen oder ein Hilfsverzeichnis wären ziemlich praktisch.
Daher nur vier von fünf Sternen wegen zu "gut" :-)

this extension is a life-saver!! i downloaded literally hundreds of hours worth of lectures from a subscription-only website. i'll never have to pay for it again. and the video quality is great. cannot thank the developers enough.

Its great! I like it!

Able to download videos where other services failed.

muito boa

works on most sites... and works better than any other.

Bait and switch. Offers downloads but any video downloaded is transparently converted, significantly lowering the bitrate while also watermarking the stream with a QR code. This code linking a site where visitors are prompted to purchase a license for the 'converter' to remove the watermark. A mark that wouldn't exist if the 'downloader' just downloaded the source without superfluous conversion. It's deceptive, invisibly inserting itself into the media in an effort to trick the gullible into believing they need a license that would, if the media wasn't converted in the first place, be unnecessary. Not to mention it appears they've got some sort of bot service periodically five-star reviewing the extension presumably to bury negative reviews.

非常好用，8成的視頻都能下載，操作簡單

es extraudinario

GOOD

You have to pay for an open source converter, or it will encode a large Qr code into the result with poor quality. So here you need an extra program just to be able to collect for this program. This is not what you expect, you want to download the stream without manipulating the stream.

I struggled with it at the beginning. Downloads were imcomplete aborted. Once I increased the timeouts significantly and reduced the number of parallel downloads everything was working nice. If you have trouble with this Plug-In have a look at its Behaviour preferences.

This app worked perfectly for ONE month. Then never worked again. It is worthless and I suggest not wasting time with it.