versions

The <versions> element lists two items: the available versions of a clip and the version currently in use.

Different versions of a track are described by different <feed> elements, each identified with a unique vuid attribute. In an Open clip XML, a specific version of a clip is defined as all the <feed> elements sharing the same vuid attribute across different <track> elements.

The <version> element describes and lists the available versions, while the currentVersion attribute defines which <version> element is the current one. The client application that reads the .clip file is not required to set currentVersion; it only serves as a flag put there by the creator.

Attributes

Attribute	Data Type	Allowed Values	Occurrence	Description
type	string	`versions`	0-1	Type of the element.
version	unsigned integer	`7`	0-1	Version of the XML element.
currentVersion	string	any	0-1	Defines which `<version>` to use as the current, based on matching `uid` on each `<version>` child. If not defined, the last one is considered the current.

Note: Optional attributes (0 occurrence attributes) will be inferred from the parent node.

Children

Element	Data Type	Occurrence	Description
`<version>`	version	*	Each version contained in the list of versions.

Example

Example 1

Consider the following simplified example.

<versions currentVersion="v2">
    <version uid="v1"/>
    <version uid="v2"/>
    <version uid="v3"/>
</versions>

This list of versions would be paired with the following tracks.

<tracks>
    <track uid="track1">
        <feeds>
            <feed vuid="v1" uid="t1f1"/> 
            <feed vuid="v3" uid="t1f2"/>         </feeds>
    </track>
    <track uid="track2">
        <feeds>
            <feed vuid="v1" uid="t2f1"/>
            <feed vuid="v2" uid="t2f2"/>
            <feed vuid="v3" uid="t2f3"/> 
        </feeds>
    </track>
</tracks>

This clip can display the following:

Version 1: track1 using feed t1f1 and track2 using t2f1;
Version 2: track2 using t2f2 only (there is no vuid in track1 matching "v2");
Version 3: track1 using feed t1f3 and track2 using t2f3;

In this example, the client application should display version 2 of the clip because currentVersion = 2.

versions

Attributes

Children

Example

Example 1

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