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I wanted to edit a video in the AVI/h264 format in the Video Sequencer. Upon loading the file and adding it to the timeline, seeking in the project because close to impossible, because every jump in the timeline causes a significant delay. After running with debug logging on, I suspect this is due to the use of OpenH264 for decoding the video (instead of FFMPEG?). During the duration of the freeze, I see a lot of decoding-related logs in the debug log. I am actually surprised that loading a video in the AVI/h264 format is even possible in the Flatpak build, because the RPM build of does not allow it. When inspecting more closely the debug logs, it is due to OpenH264 not being able to create a decoder for the video file upon wanting to load it. Reproducible: Always Steps to Reproduce: 1. Install Blender Fedora flatpak (launch from CLI with '-d --debug-all' 2. Open Blender 3. Go to 'Video Editing' 4. Add a AVI/264 video file to the timeline 5. Try to seek Actual Results: Seeking in the timeline is extremely choppy and makes the Video Sequence completely unusable for actual work. Expected Results: Smooth seeking in the timeline. Additional Information: ; flatpak info org.blender.Blender Blender - Free and open source 3D creation suite ID: org.blender.Blender Ref: app/org.blender.Blender/x86_64/stable Arch: x86_64 Branch: stable Version: 4.3 License: GPL-3.0 Origin: fedora Collection: Installation: system Installed: 1,1 GB Runtime: org.fedoraproject.Platform/x86_64/f42 Sdk: org.fedoraproject.Sdk/x86_64/f42 Commit: 801318b0efe226653f8405a9fbeb8d3a0f0236f6f80be55142ee542a125e63e4 Subject: Export org.blender.Blender Date: 2025-03-31 14:12:43 +0000 Alt-id: f4ce0b15d824f55cd83e86fe0eb994abbc1fa8c4fdcfc57b81adb0504a0dbfb1
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