UDP video stream not working with ArduSub companion

The following template is for Issue/Bug reporting only. https://docs.qgroundcontrol.com/en/Support/Support.html#github-issues

For questions about how to use or build QGC see: http://qgroundcontrol.com/#resources

If you are using an old stable release please upgrade first and verify your issue before reporting.

Expected Behavior

Video showing in QGC

Current Behavior

Was working in 4.0.2 but after upgrading to 4.2.0 QGC does not show video

System Information

When posting bug reports, include the following information

Operating System: macOS Monterey 12.0.1
QGC Version: 4.0.2
QGC build: [e.g., daily, stable, self-built from source, etc...]
Flight Controller: Pixhawk
Autopilot (with version): ArduSub 4.0.3

Detailed Description

When starting QGC 4.2.0 it does not connect video, was working in 4.0.2. Also video is working in gStreamer with following cmd: gst-launch-1.0 udpsrc port=5600 ! application/x-rtp ! rtph264depay ! avdec_h264 ! videoconvert ! autovideosink

Log Files and Screenshots

QGC Console Logs
Autopilot logs when available (post a link).
Screenshots of QGC to help identify the current issue/bug behavior.

mavlink / qgroundcontrol