Firefox does not play videos (except for Youtube)

Question

I have visited many sites offering solutions to this problem but nothing helps. I installed all the required codecs but the videos are not played.

For example, for for some videos there appears a message: "No compatible source was found for this media." or "Unfortunately, this video is missing or damaged and cannot be played.". Only YouTube videos are played fine. What is the issue and how to fix it?
The Ubuntu version is 20.04, and interestingly, Chrome has no such problems and can play all the videos.

Codecs installed:

sudo apt install libavcodec-extra
sudo apt install ubuntu-restricted-extras

Please edit the question and post your Ubuntu release/version and what codecs have you installed. — ChanganAuto, Apr 22 '21 at 21:00
Does this answer your question? no compatible source was found for this media — ChanganAuto, Apr 22 '21 at 21:01
Is your system fully updated? Does the same problem happen with different browsers? Do you have problems also with local files? — ChanganAuto, Apr 23 '21 at 09:59
I can play all the videos with Chrome, and the system should be up-to-date. — cerebrou, Apr 23 '21 at 11:21
The very likely the problem is unrelated to codecs or other software but with a corrupt Firefox user profile. — ChanganAuto, Apr 23 '21 at 11:24

user2629582 · Answer 1 · 2024-02-17T15:46:15.670

0

Check journal entries. I had a similar problem and it was caused by AppArmor denying access to amdgpu drm lib.

journalctl -xe -b to check the logs

sudo systemctl status apparmor.service to check if AppArmor is running

I added this line /opt/amdgpu/lib/**/*.so* mr, to /etc/apparmor.d/local/usr.bin.firefox to allow access and it solved the problem.

edited Feb 17 '24 at 15:46

answered Feb 17 '24 at 15:45

user2629582

1

Firefox does not play videos (except for Youtube)

1 Answers1