How Do You Test A New YouTube Syndication Network?

In episode 137 of Semantic Mastery’s weekly Hump Day Hangouts, one participant asked how to test a new YouTube syndication network.

The exact question was:

Wondering really how to test a new YT Syndication network. How do we download a video from YT to test our new TY syndication network? Also, once it is tested, do we need to go into the network properties and remove the syndicated video?