Apple Motion 3 User Manual
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Chapter 1
Getting to Know Motion
Kind: Identifies the type of media, including QuickTime movie, still image, QuickTime
audio, or PDF. See Appendix B, “
,” on page 1203 for a list of
supported codecs and file types.
In Use: When checked, this field indicates that the media is currently being used in
your project. When unchecked, it is not used. If “Automatically manage unused media”
is turned on in the General tab of Motion Preferences (press Command-comma),
Motion removes unused media from the Media tab automatically. Disable this setting if
you prefer to manage the contents of the Media tab manually.
Duration: Displays the duration of the media in either frames or timecode.
Frame Size: Displays the native size of the image in pixels. The numbers represent
width and height. This column remains blank for audio-only files.
Compressor: Displays the type of compression used in the clip, if any. This is also
sometimes referred to as a codec.
Depth: Displays the number of colors (bit depth) of the file. Any item listed as Millions
of Colors+ indicates that the media contains an alpha channel in addition to the RGB
data.
Vid Rate: Displays the original frames per second of the media. Sequences are listed at
the current project frame rate and still images display no Vid Rate.
Data Rate: Displays the number of bytes per second at which the media file plays.
Aud Rate: Displays the sample rate in the audio track, measured in kilohertz (kHz).
Aud Format: Displays the bits per sample (usually 8, 16, or 24) and the number of
channels (usually mono, stereo, or multi-channel) of the audio track.
File Size: Displays the overall file size of the media on disk.
File Created: Displays the creation date of the media.
File Modified: Displays the last date on which the media was modified.