For the player to be shared in Chatter you need the Vidyard for Salesforce and Vidyard for Chatter integrations set up. For the Player to be viewed in a Vidyard Video hub you need a Vidyard Video Hub with user authentication set up.
This is very useful for controlling who can view and share your internal videos with Vidyard players.
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From the Content menu click Players.
Hover your cursor over the player and click Security.
Under the Restrictions tab, scroll to the Secure platform whitelist section.
Click the Restrict to a secure platforms checkbox.