The following are related tutorial and articles:

  1. Embedding videos and animations
  2. https://www.youtube.com/watch?v=yJPyl9AKhmE

I want to insert a movie in my slide with the following codes:

  \setbeamertemplate{navigation symbols}{}


I put the video in the same file of the this latex document.
My video file is: MP4 Video (.mp4)

However, it only shows the following:

enter image description here

Well, I can open this video; however, I cannot open it in my pdf file.
How to fix it?