I figured out the issue, at least for my problem.The Media Textures only display when the media player is open, BUT that is intended, because you have to add a simple blueprint.
What you need to do is this:
- After opening the Media Player and verifying that the Media texture is showing the video (while the media player is open), save the media texture
- Once done, create a blueprint following this guide from Unreal Play a Video File | Unreal Engine Documentation . [Skip to the blueprint section].
As it turns out, the Media texture will only play when the Media Player is open, but the blueprint accesses the Media player and plays the video when you preview the game.
How to edit a material with a media texture (since the blueprint works on play:
- Open the material with the media texture (or add it if you haven’t)
- Open the Media Player (and select the correct video, and hit play). Also, check loop, so the video will keep looping.
You can now edit your material, as long as the Media Player window is open.