Shared and Unique Clip Properties

All clips have properties such as Name, In point, Out point, Duration, comments, and so on. Master clips are the objects in your project that store clip properties; affiliate clips then refer to the properties stored in their master clip. In other words, an affiliate clip stores very little unique information about itself and instead refers to its master clip for almost all properties.

Figure. Diagam showing that the Name and Scene properties are stored in the master clip and shared with affiliate clips whereas In and Out points are unique to each master or affiliate clip.

For example, if you import a QuickTime movie file named Apple into Final Cut Pro, a master clip named Apple is created in your project. Each time you edit the master clip into a sequence, an affiliate clip is placed in the sequence and its name is also Apple.

The affiliate clip doesn’t actually store a name, but instead refers to the Name property stored in the master clip. You can test this by changing the name of the master clip to Orange. The names of all of the affiliate clips update simultaneously.

Because there is only one Name property shared between a master clip and its affiliates, you can change this property either from the master clip or from any of the affiliate clips. Regardless of where you change the Name property, all of the affiliate clips reflect the change simultaneously.

Although master clips share most clip properties with their affiliate clips, there are a few properties that affiliate clips do not share. Most of these properties are for editing, trimming, or compositing. For example, each affiliate clip has its own In and Out points so it can have a unique duration in a sequence while still referring to the same media file via its master clip.

For more information about modifying clip properties in the Browser columns or in the Item Properties window, see Working with Projects, Clips, and Sequences.

Shared Properties Stored in Master Clips

The following clip properties are stored in a master clip, and these are shared between the master and all its affiliate clips. If you change one of these properties, it changes in all affiliate clips.

  • Source

  • Name

  • Offline Status

  • Capture Status

  • Scene

  • Shot/Take

  • Log Note

  • Master Comments 1-4

  • Label

  • Label 2

  • Good

  • Anamorphic

  • SmoothCam

Note: Several properties stored directly in a clip’s media file are also considered to be shared properties. For details, see Modifiable Media File Properties.

Media File Properties

Some clip properties are derived from the media file itself. Master clips refer to these properties directly from the media file. Final Cut Pro caches some of the media file information in clips in case the media file is disconnected. Affiliate clips refer to these properties via the master clip, so they are also considered to be shared properties. Most media file properties can only be modified in the media file, or by recapturing with different capture settings.

  • Frame Size

  • Compressor

  • Data Rate

  • Vid Rate

  • Alpha

  • Aud Format

  • Aud Rate

  • Last Modified

  • Size

Modifiable Media File Properties

The following properties are stored directly in a media file but, unlike other media file properties, they can be modified via the clip. When you change one of these properties in a clip, the clip’s media file is modified.

  • Reel

  • Media Start

  • Media End

  • Aux 1-2 Reel

  • Aux TC 1-2

  • TC

Because these properties are stored directly in your media files, you don’t risk losing vital logging and capturing information if you delete clips in your project.

Unique Clip Properties

The following clip properties are unique to each affiliate clip and unique to the master clip as well. These properties are not shared. Most of these properties are properties for editing and trimming, such as In and Out points, so that each affiliate clip can have a unique duration in a sequence while still referring to the same media file via its master clip.

  • Comment A-B

  • In point

  • Out point

  • Duration

  • Description

  • Pixel Aspect Ratio

  • Film Safe

  • Gamma Level

  • Composite mode

  • Reverse Alpha

  • Thumbnail