Our small working example shows the core mechanisms behind the OFX Image Effect API, but leaves out much of the messy detail. The important things to note are the use of suites to call functions on the host, the use of properties to get and set values in objects and the use of actions to call things on the plug-in.

There are many more suites which have not been used, as well as actions that have not been trapped, as well as gory bits to do with pixel aspect ratios, interlacing and more. These extra suites and actions add a rich functionality to OFX that give it a great flexibility as well as dealing with the evil little details such as video standards.