Score:0

Firefox - VideoDownloader App + Companion application not working (Ubuntu 21.10)

az flag

To install the browser firefox on my system I used sudo snap install firefox. Afterwards, I installed the extension VideoDownloader, which was working fine. But by using this extension the first time I got the message Companion application required and a button to install this external application. Therefore, I did the requested installation, successfully. I started a second try to download a video. But the same message Companion application required appears.

After some investigation I found the root cause for this. The snap-file for firefox by self is the problem. Inside of file snapcraft.yaml the option of confinement is strict. Therefore firefox can't reached the Companion application, because the installed Companion application is outside of the sandbox. And by security ruleset confinement:strict, firefox has no permission to use the Companion application.

Question: How can I do a change of security ruleset confinement:strict into security ruleset confinement:classic?

Score:1
jp flag

You can install Firefox by sudo snap install firefox --classic to do this. I'm not sure if you can convert an already existing install from strict to classic though.

Jens Fischer avatar
az flag
Thanks for your tip, but your solution is not working based on security problems. If a snap-packages has `confinement:strict ` you're not allowed to change the security option into classic. This is the reason of my question.
Score:0
bm flag

I managed to get the VDH supplement app working. The path was simple: I followed the instructions provided by VDH on the page with the download of the supplementary app, however I didn't install the .deb version (I didn't know how to start it) but the tar.gz "version".

Basically I followed the download instructions on different linux distributions, the two command lines you find on the site do all the rest.

https://askubuntu.com/a/1458955/1680832

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