Here is an example of a logo overlay that, when clicked, will redirect the user to a webpage of your choosing.
*This example uses the JW Player version 6.7
Under the logo variable, simply change the file path to the image you want, and the same goes for the link variable. The position can be set to 'top-left', 'top-right', 'bottom-left', or 'bottom-right'.
The logo is recommended to have a transparent background, to blend nicely with the video. The player does no resizing of the logo, so whatever size you make it will be displayed. As a rule of thumb, making the height and width of the logo about a quarter the size of the player's height and width is a good idea.
For more information, check out JW Player's official instructions here.