Final Cut Pro 6 - How Is Information Stored in a QuickTime Movie?

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How Is Information Stored in a QuickTime Movie?

QuickTime movie files store media data in separate tracks. You create a QuickTime
movie file by adding tracks that point to the media you want to use. The media may be
embedded in the file itself or in a reference movie in another file. This track architecture
is powerful and flexible, allowing you to store and synchronize multiple pieces of video
and audio media in a single file.

There are many types of tracks allowed in a QuickTime movie file. Here are a few
examples of what might be included in a QuickTime movie file used by Final Cut Pro:

 An audio track: This track contains audio media data of a certain duration, encoded

with a particular audio codec, sample rate and bit depth. The track may be mono or
contain two (stereo) or more interleaved channels of audio samples.

 A video track: This track contains video media data (a number of video frames) of a

certain duration (determined by the track’s frame rate), with particular horizontal and
vertical dimensions, and encoded with a particular video codec.

 A single still image: This track contains media for a single still image. The image

data has particular horizontal and vertical dimensions and is compressed with a
particular codec.

 A timecode track: A track that contains a number count and frame rate that

corresponds to the video frames in a video track. This track can be captured from a
videotape or created later in Final Cut Pro.

 A text track: This track contains text information that changes at specified times. A

text track could contain subtitles, or marker notes about a video or audio track.