The video caching
feature requires a port number for the HTTP video server. The default is port
80. If your HTTP video server uses a port other than this well-known HTTP port,
you must add the port number to the list of caching ports.
a caching port
Navigate to the
Configuration > Optimization
Rules > Video Caching page.
Global Settings tab, click the
Set Global Parameters link.
In the Caching Ports
field, type the HTTP video server’s port to add it to the list of caching
ports. Optionally, add multiple port numbers separated by commas.