Description of problem: Gnome Videos (totem) does not play H.264 video from disk with gstreamer1-plugin-openh264 from repository fedora-cisco-openh264. According to [1] this should be possible since Fedora Workstation 31. Version-Release number of selected component (if applicable): gstreamer1-plugin-openh264-1.16.2-1.fc32.x86_64 and openh264-2.1.0-1.fc32.x86_64 How reproducible: Always Steps to Reproduce: 1. Make sure to remove gstreamer1-libav (repository rpmfusion-free) 2. Make sure to install gstreamer1-plugins-bad-free (repository fedora) 4. Install gstreamer1-plugin-openh264 (repository fedora-cisco-openh264) 5. Open H.264 video from disk [2] with Gnome Videos Actual results: Gnome Videos does not play the video due to missing codec. Installing gstreamer1-libav solves the issue. Expected results: Gnome Videos should play the video with gstreamer1-plugin-openh264. Additional info: Potentially this issue is related to https://bugzilla.redhat.com/show_bug.cgi?id=1839971, where I describe that mozilla-openh264 plugin for WebRTC in Firefox is not working. My rough guess is that openh264 may not work for gstreamer in Gnome Videos and for WebRTC in Firefox. H.264 playback with ffmpeg-libs in Firefox works fine. OS: Fedora Workstation 32 (with Gnome) [1] https://blogs.gnome.org/kalev/2019/09/25/out-of-box-h-264-and-aac-support-in-fedora-31-workstation/ [2] I downloaded the video from https://download.media.tagesschau.de/video/2020/0527/TV-20200527-1723-1200.webxl.h264.mp4 (Tagesschau.de is one of the biggest german news websites)
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I removed gstreamer1-libav on Fedora 34 and can still play the video file from disk. Therefore, I cannot reproduce the bug on Fedora 34. I will close the bug report.