What are the differences between subscription and Pay Per View?

In general, a subscription is a viewer paying to access something as much as they want over a fixed amount of time. Pay Per View, on the other hand, is someone paying directly to access something. For example, someone can set up an annual subscription where viewers can watch uploaded content as much as they like over that year. While someone else can set up a pay-per-view for a 90 minute program where someone gets to watch only 90 minutes of content and nothing more.

In particular for DaCast, Pay Per View offers a more flexible schedule where you can state down to the minute how much access someone is buying or to enable multiple quantities (such as selling access at $5 an hour). Subscriptions are narrowed down to Weekly, Monthly, Annual and other longer windows of access, none less than a week.