I got it working near seamlessly but the videos audio is muted, the main title screen is fine and normal but the audio is silent. If there isn't audio available then I understand but I hope reaching out can solve this.
Viewing post in MV/MZ Pre-Title Splash Videos comments
Hello there.
I have a couple of thoughts on why that might be happening.
First, it could be that the audio codec used in the video is not supported on the target platform. To verify this, I'd first try playing the video directly using some sort of media player. If that works, the next step would be to try to play it in a normal event in the engine.
The other option is that something set the volume of all videos in engine to be muted. The plugin doesn't have any built in video controls, so it should use the defaults. It might be possible that during a previous test play you muted the video from somewhere else in the game, and that setting is kept during the splash videos.
Audio should be supported. The webms I, ahem, legally acquired on the internet to test it with had audio, and the audio playback was fine. There have also been complaints of the audio continuing onto the title screen when skipping videos, so other users have had sound working as well.
Unfortunately there isn't much more troubleshooting I can do, as all this plugin does is launch a container for the video which is already something rpgmaker did.
~Ramza