UE-121781
In 4.27, the media player doesn’t show the camera input. There are at least a dozen people who have confirmed this. The same setup works fine in 4.26 and even ue5.
In my case, it is accessing my camera sources, I can tell because one of them is a Webcam and if I select it, the Webcam lights up to show that it is being used. The other source is a cam link 4k, and shows black in 4.27.
To be specific. I create a “Movies” folder, inside the movies folder, I add a new media player, and texture. I open the media player, and at the top left, where the folder is, I click on that and choose my video source. This normally shows the live feed from my cam link or Webcam, but it doesn’t show it, it is just black.
Changing the format, resolution, frame rate or codec doesn’t change anything.