How do Ad Frequency and Ad Offset impact ad serving?

Ad frequency - This value determines after how many videos an ad will be called.

This value does not reset on page refresh. 

Example:

1. Ad frequency is set to 3 on the player level.
2. A user navigates to a page where the player is located and gets a pre-roll ad.
3. Ad frequency measurement starts and starts a countdown. The next 3 videos will not get a pre-roll in a playlist if the user stays on-page.
4. If a user chooses to refresh the page after the initial pre-roll call, the player's ad frequency logic will kick in and refresh will not show a pre-roll. It will continue to behave as such until the user sees 3 videos without an advertisement.

Ad offset - Delays the initial display of an ad by 0, 1, 2 … video calls.