It’s a good plugin, but it has some problems.

I appreciate the stable playback of the video.
However, there are some complaints.

-There is no function to output structured data of moving images.
-In addition to mp4, you can set webm and Ogv as options, but you cannot specify the order in which they are read.
(* Even if you want to load webm into a browser that can read webm, MP4 is the priority description, so there is no point in preparing a file in webm format.)

We are anxious to be able to respond to these issues.