You can try to run the following code to learn how to implement a preload attribute to allow the author to give a hint to the browser for the best user experience. Works for both <audio> and <video> tags −
Example
<!DOCTYPE HTML> <html> <body> <video width="300" height = "200" preload = "none" controls> <source src = "/html5/foo.ogg" type = "video/ogg" /> <source src = "/html5/foo.mp4" type = "video/mp4" /> Your browser does not support the video element. </video> </body> </html>