How do you import an image or video into the code you have made

Question

I made a web,and used a video code but their are no videos or images in it how can i import the video or image into the empty video port.

Answer 1

I have the code to input a video port in my web but i want a video to be inserted into it(the empty video port)do you understand now.

Answer 2

In HTML and html5

Answer 3

I don't understand