There are a couple ways you can put a video on your site.
1. Embed YouTube/Vimeo Video
2. Upload Video into our player
To add a YouTube or Vimeo video to your site you will need to have first uploaded your video to YouTube or Vimeo. Once that is complete you can get what is called an "Embed script" that will show the YouTube or Vimeo player with your video on it, in your site.
Here is how you get the script on youtube:

And here's where to get the Vimeo script:

Copy the script and paste it in source view on the page you wish to use to display the video.
See what the script looks like in source view below:

If you wish to upload your video to your site and use the player within your site you would follow these steps below:
See videos pertaining to this area here
1. Once you are on the page where you want your video to display, pick an empty frame (or create a new one) then change the frame type to "Media player".
NOTE: the Media player frame also can playback Audio files.

and click "Save". (that will take you to the frame settings)
2. You can upload your video from this page. And set the player for different types of video files. See screenshot:

NOTE: If you are unsure what type of video file you want to use on your site please contact support. Also support can turn on the new feature for the video uploader, which will convert your video upon upload to the most compatible version for Mac, PC, and Mobile.
NOTE: Our server has limit setting set to 51 MB at a time(files larger than that will not upload with the regular uploader). However the Java Uplaoder splits files to small pieces when uploading to the server, then puts them back together. please use the Java uplaoder or FTP for large files