Unreal Engine 5.4 Video Capture Problem

I am trying to build my own virtual production setup using Unreal Engine 5.4 on an M1 MacBook Pro, a Sony A7SII, and the Elgato CamLink 4K. When I plug the CamLink 4K into my Mac, the Elgato software works with my A7SII via HDMI. However, when I create a new media player texture in my project and attempt to select my capture device, Unreal only shows the CamLink 4K as an option in the audio tab. The video tab only displays the MacBook Pro’s webcam as a usable video source. I have tried this on Unreal Engine versions 5.3 and 4.7, with the same issue. I have followed numerous tutorials and double-checked that all the plugins are installed. I am unsure what to do. Is this an iOS issue, or is there something I can do to fix this?

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