QGC v4.4.4 issues with RTSP streaming on Macbook M4, A8 Mini

Im using the latest QGC master and PX4 15.2. I cant get rtsp working, theres some issue that causes this continuously in the logs:

VideoReceiverLog: gst_element_factory_make( ‘tee’) failed
VideoReceiverLog: Failed

Ive seen others getting this some time back but didnt see any remedies. Can someone shed any light on this?

The macbook camera works immediately, so does remote iPhone etc. The gimbal is working ok as well. Ive tried to debug but its a tight loop starting as soon as the camera code runs. I have an Siyi A8 at 192.168.144.25, a fresh Macbook M4 with nothing installed but Qt 6.8.2 and QGC, Gstreamer 1.24.12 (via the docs and /tools/setup/install-dependencies-osx.sh). Ive used Julians camera manger (GitHub - julianoes/siyi-a8-mini-camera-manager: Camera Manager for SIYI A8 mini for RPi based on MAVSDK) before and it works well with the camera and gimbal inside a 144.0/24 subnet. Im getting square eyes from wireshark. Streaming was working (albeit clunkily) on this same setup before but Im going mad trying to track what version that was. I specifically reset my mac for this and followed the docs to the ‘T’ so before I deviate I wanted to ask in the forums. I m happy to switch git commits if someone can offer some logic/guidance.