Apple Final Cut Pro X (10.1.2) - Manual (Page 494)

Glossary 494
uncompressed 8- and 10-bit 4:2:2 These video formats can be used to store 8-bit or 10-bit
4:2:2 Y’CbCr video without employing data compression. Bypassing compression reduces the
computer’s processing load but increases the data rate considerably. A large-capacity RAID
storage system is typically required to work effectively with uncompressed video. In many cases,
Apple ProRes is a better choice. The data rate of uncompressed 4:2:2 video varies according to
frame size and frame rate. As an example, at a frame size of 1920 x 1080 and a frame rate of 29.97
fps, the data rate is 1.0 Gbps for uncompressed 8-bit 4:2:2 video and 1.3 Gbps for uncompressed
10-bit 4:2:2 video.
Upstream Refers to clips that are to the left of the current clip in the Timeline. When you
perform actions that ripple the project, upstream clips are not affected.
value slider A value slider is a type of numerical slider control that appears as a number, often
to the right of a basic slider. There are two ways to adjust a value slider: by dragging over the
number to decrease or increase the parameter value, or by double-clicking the number and
entering a new value.
variable speed Speed that varies dynamically, in forward or reverse motion, in a single clip.
VCR Abbreviation for videocassette recorder. Generally refers to consumer equipment used for
recording video from various sources. Sometimes referred to as a VTR. See also VTR.
Vectorscope A video scope in Final Cut Pro that shows the distribution of color in your image on
a circular scale. The Vectorscope is useful for comparing the hue and intensity of colors between
two clips for the purposes of color correction.
Video Animation Editor You can show the Video Animation Editor for clips in the Timeline
to adjust effect parameters, create fade-ins or fade-outs, or change effects over time
using keyframes.
Viewer When you play clips selected in the Browser and the Timeline, they appear in the Viewer.
VTR Abbreviation for videotape recorder. Generally refers to professional equipment used for
recording video from various sources.
watermark A visible graphic or text overlay applied to an image or video clip to indicate that it
is protected by a copyright. Watermarks are used to discourage the use of images or video clips
without the copyright holder’s explicit permission.
WAVE (or WAV) An audio file format most commonly used for storing uncompressed linear
pulse code modulation (LPCM) audio data.
Waveform Monitor A video scope in Final Cut Pro that displays the relative levels of luma
and chroma in the clip currently being examined. Spikes and dips in the displayed waveforms
correspond to light or dark areas in your picture.
widescreen Any movie presentation that has an aspect ratio wider than 4:3. In movie theaters,
1.85 is considered standard and 2.40 is considered widescreen. For video, 4:3 is considered
standard and 16:9 (which is almost the same aspect ratio as 1.85) is considered widescreen. See
also 4:3, 16:9.
wipe A common type of video transition. In a wipe, the screen splits, moving from one side
of the image to the other to gradually reveal the next shot. A wipe is more obvious (and
customizable) than a fade or cross dissolve.
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