The Open Clip is an XML structured file with the following information.
You can view the Open Clip as something similar to a P2 clip: the Open Clip is a wrapper for media files (or essence), and it structures them.
The <version> property is only mandatory for top level elements. If <version> is missing from an element, it is inferred from the parent element.
An Open Clip cannot contain mixed frame rates, either within a version or between versions: every feed in an Open Clip must use the same frame rate.
Open Clip and .clip (the Open Clip file extension) are used interchangeably in this document.
This documents to use notation as close as possible to DTD definitions: