I’ve finally made it work. Using a M1 Pro. I followed the following video and downloaded the assets in the video descriptions:
Make sure the Electra Plugin is turned on in Unreal engine.
After following the tutorial, my video would still not play 100% of the time, and what I realised was that the video file size was too large. I used an online video compression and reduced the size to 10 Mb. Don’t worry; the video will still have enough quality to look “good”. But after doing that now the video plays every time a play the scene. Hope this help if you are struggling to make it work https://www.youtube.com/watch?v=MeSvOayyvTo