Release v4.4.2 video stream is black (doesn't show) in detached window

[kwh44]

---

Expected Behavior

I launched QGC, video stream is shown in small embedded window, but when clicking on detaching video stream into separate window, video stream is expected to show in detached window as in embedded (small resizable screen on top of map)

Current Behavior

Please describe what happens instead of the expected behavior. I launched QGC, video stream is shown in small embedded window, but when clicking on detaching video stream into separate window, video stream is black, doesn't show in that window

Steps to Reproduce:

Please provide an unambiguous set of steps to reproduce the current behavior

1. Launch QGC
2. Wait for video stream to show in small embedded window
3. Click on button to detach video stream into separate window
4. Now you can see that video stream is black in detached window, while in small embedded window it was showing the stream.

System Information

When posting bug reports, include the following information

• Operating System: Ubuntu 24.04.1 LTS
• QGC Version: 4.4.2 official build
• QGC build: downloaded from https://github.com/mavlink/qgroundcontrol/releases/download/v4.4.2/QGroundControl.AppImage
• Flight Controller: SITL
• Autopilot (with version): SITL ardupilot

Detailed Description

video stream doesn't show in detached window, I am using QT 5.15.2, gstreamer version is 1.24.2

Log Files and Screenshots

Video stream is shown in embedded window Video stream is not shown (black) in detached window

[kwh44]

the bug looks to be previously reported on older ubuntu version https://github.com/mavlink/qgroundcontrol/issues/10803