Bug 1700263 - Flatpak Firefox: Can't play mp4 videos
Summary: Flatpak Firefox: Can't play mp4 videos
Alias: None
Product: Fedora Modules
Classification: Fedora
Component: firefox
Version: unspecified
Hardware: x86_64
OS: Linux
Target Milestone: ---
Assignee: Martin Stransky
QA Contact: Fedora Extras Quality Assurance
Depends On:
TreeView+ depends on / blocked
Reported: 2019-04-16 08:05 UTC by Michal Konecny
Modified: 2022-09-15 14:18 UTC (History)
8 users (show)

Fixed In Version:
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Clone Of:
Last Closed:
Type: Bug

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Description Michal Konecny 2019-04-16 08:05:55 UTC
Description of problem:
Can't play mp4 videos. In Firefox console I see:
"The video on this page can’t be played. Your system may not have the required video codecs for: video/mp4; codecs="avc1.42E01E mp4a.40.2"

Version-Release number of selected component (if applicable):
Firefox - Browse the Web

          ID: org.mozilla.Firefox
         Ref: app/org.mozilla.Firefox/x86_64/stable
        Arch: x86_64
      Branch: stable
      Origin: fedora
Installation: system
   Installed: 201.7 MB
     Runtime: org.fedoraproject.Platform/x86_64/f29
         Sdk: org.fedoraproject.Sdk/x86_64/f29

      Commit: 5ac207ed18979af9a6e60ce68514a87bb91de4093f4d32d6e9ae480590fbd966
     Subject: Export org.mozilla.Firefox
        Date: 2019-03-28 20:27:32 +0000
      Alt-id: ece033460d927e21d89db3ba48168e7f509bf3cf5f65eb58182af9ba49aefc67

How reproducible:
Just go to any page containing mp4 video and try to play it

Steps to Reproduce:
1. Open Firefox
2. Go to https://www.twitch.tv/videos/410565600

Actual results:
Video is not played

Expected results:
Video works

Additional info:

Comment 1 Martin Stransky 2020-11-03 21:00:45 UTC
We now support playback via openh264 but I'm not sure how that interacts with flatpak sandbox.

Comment 2 Michal Konecny 2020-11-04 09:00:52 UTC
I switched to Flathub Firefox in the meantime, so I'm not sure if the issue is still there.

Comment 3 Mirek Svoboda 2020-11-17 18:28:11 UTC
I am successfully reproducing this issue on my system.

I use a different Twitch video for reproduction, as the video from the issue description is no longer available.
The video currently used for reproduction: https://www.twitch.tv/videos/805606231

Version info:
# flatpak info org.mozilla.Firefox

Firefox - Web Browser

          ID: org.mozilla.Firefox
         Ref: app/org.mozilla.Firefox/x86_64/stable
        Arch: x86_64
      Branch: stable
     Version: 82.0.3
     License: GPL-3.0+
      Origin: fedora
Installation: system
   Installed: 272.6 MB
     Runtime: org.fedoraproject.Platform/x86_64/f33
         Sdk: org.fedoraproject.Sdk/x86_64/f33

      Commit: b5d22ba2cd8048fcc71a4116e94b7ef92de5fdf709a86c69f4c901a06316bbd9
     Subject: Export org.mozilla.Firefox
        Date: 2020-11-10 05:54:04 +0000
      Alt-id: 95136e74cb2a94ce87851d63860d52ec94aded8411376bf7c63e23ddc1d02372

Comment 4 Mirek Svoboda 2020-11-17 20:47:57 UTC
I confirm I cannot reproduce this issue with Flathub Firefox.

Comment 5 soredake 2022-09-15 14:18:26 UTC
Still a problem.

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