Hi,
I tried to use this plugin and then experiment using 'Show Picture' but the picture IDs always show over the top of the video. The various blend modes built into RPGMaker MZ do not help the issue and Show Parallax is only a workaround.
I was hoping to show emotes using Show Picture ID layering or other animated picture plugins, which this plugin would allow (as I would just have to center the video and mind the coordinates without obscuring the entire playback), the only consideration would be that the background for the video cannot be a parallax or picture ID at the same time. I was hoping to see if I could add a static picture ID or scrolling parallax on a layer under the video playbacks, and I could easily be missing something in the function documentation above after reviewing. This isn't a major issue, as even the video previews above make it clear your video background will either be the entire video itself or the sprite map. There are also advantages to the various blend modes running animated pictures over the top of the video without having to have various visual effects built into the video directly.
I realize this is likely an engine limitation and wasn't sure if I should be using the javascript function calls instead of the in-engine plugin commands to get around this as I'm relatively inexperienced with RMMZ, JS, and plugin usage, but I just thought I'd get Niji's opinion before hitting up the RMMZ forums for ideas on the order of operations here. The plugin itself works great.