Thanks to Dave and Steven H at Tektronix it seems we have a winner:
http://www.dvs.de/nc/support/glossary.html
Head and full
Terms for color value ranges indicating a restricted value range that provides headroom (head) and the full value range (full).
Terms for color value ranges indicating a restricted value range that provides headroom (head) and the full value range (full). A scene in post production is most likely worked upon in RGB in the full value range (8 bit: 0 = black, 255 = white). However, during broadcast the images have to be color converted to receive a 'legal' broadcast signal. Such a signal must provide a headroom in the color values to account for tolerances and a possible signal overshooting that may occur during the sampling of analog video signals. So the color values have to be converted from RGB in the full value range to YUV in the restricted value range (mostly 16 = black, 235 = white).
Head and tail
Video or audio material at the beginning (head) or end (tail) of a clip that is available on the storage of a non-linear editing system .
Video or audio material at the beginning (head) or end (tail) of a clip that is available on the storage of a non-linear editing system but not used nor visible in the timeline due to an adjustment (trimming) of the clip's in- or outpoint. Clips that are recorded with heads and/or tails offer reserves in their content for further corrections during editing.
P.S. There is a joke in their but I won't stoop so low for once.
---In Avid-L2@yahoogroups.com, <mactvman@...> wrote :
Barking Trout Productions
Studio City, CA
bigfish@...
Posted by: bigfish@pacbell.net
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