I see a wep page at https://www.w3schools.com/html/html5_video.asp
The page has a Video Example.
I can see the video working in Chrome, IE, fireFox, or Opera.
But I cannot see the video working in my Safari which is 5.1.7
Why does the safari not to support the movie in the page?
When I use the code in the page, How can I make the movie working in Safari?