Apple Final Cut Express HD - Manual (Page 1093)

Glossary 1093
out-of-sync indicator In the Timeline, the symbol that appears at the beginning of a
clip when a video item moves out of sync with its linked audio items, or vice versa.
Out point The edit point that specifies the last frame of a clip for use in a sequence.
output Sending video or audio signals out of your Final Cut Express HD editing system
to display on a monitor or record on tape.
overscan The part of the video frame that cannot be seen on a TV or video monitor.
Broadcast video is an overscan medium, meaning that the recorded frame size is larger
than the viewable areas on a video monitor. The overscan part of the picture is usually
hidden behind the plastic bezel on the edge of a television set. While you are editing,
you can use the action safe area to indicate the approximate portion of a frame that is
hidden because of overscanning.
overwrite edit An edit in which the clip being edited into a sequence replaces frames
that are already in the sequence.
PAL format Acronym for Phase Alternating Line, a 25 fps (625 lines per frame)
interlaced video format used by many European countries. PAL has a frame size of
720 x 576. Compare with NTSC format.
peak (1) Short, loud bursts of sound that last a fraction of a second. In spoken
dialogue, letters like P, T, and K at the beginnings of words can result in little peaks if
the person speaking is close to the microphone. (2) Occurrences of clipped audio
appearing in Final Cut Express HD as 0 dBFS peaks. Excessive peaks tend to indicate
that the audio was recorded at unsuitable levels. A command in the Tools menu, Mark
Audio Peaks, lets you identify 0 dBFS audio peaks in clips or sequences.
peak meter A digital audio meter that displays the absolute level of an audio signal as
it plays. So named because every peak in the signal can be accurately seen.
phase (1) In audio, the timing relationship between two identical, or similar, audio
signals. (2) In video, the timing relationship between the composite video chroma
signal and the chroma subcarrier signal which determines the hue.
PICT A still-image file format developed by Apple Computer. PICT files can contain
both vector images and bitmap images, as well as text and an alpha channel. PICT is a
common image format on Mac OS X computers.
pixel One dot in a video or still image. A typical medium-resolution computer screen is
1024 pixels wide and 768 pixels high. Digital video movies for the web are often
320 pixels wide and 240 pixels high.
pixel aspect ratio The width-to-height ratio for the pixels that compose an image.
Pixels on computer screens and in high definition video signals are square (1:1 ratio).
Pixels in standard definition digital video signals are non-square.