All I did was copy and paste. Hard to mess that up! The video appears to point to a specific server which explains why the video doesn't work. However, I would like to know how I could replace the current video with a Youtube video or does it need to be placed with another mp4 video. Any ideas?
In the W3Schools code the src attribute points to a video file called "rain.mp4" in the same directory as the document, you need to change that address to where ever your video file happens to be.
I placed the Youtube url here but it didn't work <source src="Youtube Video" type="video/mp4">. For your second suggestion, I'm not sure where the document source code is within the code. Where in the code should I insert the embedded Youtube video? Thanks.