Bug 290841

Created attachment 474790 [details] GStreamer connection bug that has been occurring Overview: GStreamer can't connect with Pipewire through the GStreamer PipeWire Plugin, thus not detecting any camera device. Steps to Reproduce: 1. Setup an Ubuntu 24.04.2 LTS 2. Install Gnome Web Epiphany using Flatpak 3. Try using a site that requests camera use, like https://mozilla.github.io/webrtc-landing/gum_test.html. 4. Additionally, you can test other applications on Flatpak that uses camera, like Cheese or Firefox, to verify if they are working as intended . Actual Results: No cameras are detected. GStreamer fails to connect with PipeWire. Expected Results: Camera is detected, where GStreamer connects successfully with PipeWire. Build Date & Hardware: Ubuntu 24.04.2 LTS. The Epiphany version I tested on uses libwebkitgtk-6.0.so.4.11.5, in the org.gnome.Platform/x86_64/48. Additional Information: I have been trying to use the Gnome Web Epiphany browser recently, which uses WebKitGTK, but I found a persistent issue with the camera detection, where it doesn't recognize my webcam. After using 'getUserMedia', it throws an 'OverconstrainedError', despite the camera being detected by all other applications that uses Pipewire. By debugging further, I detected the problem is in the connection of the GStreamer with Pipewire, where it fails to create a core, thus failing to connect. One related problem that was occurring and might be related is, on the initialization of Wireplumber, it gives the following warning: "WpPortalPermissionStorePlugin... Failed to call Lookup... No entry for camera". The versions of my packages are as follows: Epiphany: 48 PipeWire: 1.0.5 Wireplumber: 0.4.17 xdg-desktop-portal: 1.18.4 xdg-desktop-portal-gtk: 1.15.1 gstreamer1.0-pipewire: 1.0.5-1ubuntu3