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Unit of time used in audio/video timing cacluations
This article is about the unit of time. For the unit of spectral radiance, see
Flick (physics)
.
A
flick
is a
unit of time
equal to exactly 1/705,600,000 of a
second
. The figure was chosen so that time periods associated with
frequencies
commonly used for video or screen
frame rate
(24, 25, 30, 48, 50, 60, 90, 100 and 120 Hz), as well as audio
sampling
(8, 16, 22.05, 24, 32, 44.1, 48, 88.2, 96, and 192 kHz), can all be represented nicely with
integers
.
[1]
That is useful in programming, because non-integer computing generally involves approximations, and possibly leads to noticeable errors.
A flick is approximately 1.42 × 10
?9
s, which makes it larger than a
nanosecond
but much smaller than a
microsecond
.
The unit was launched in January 2018 by
Facebook
.
[2]
A similar unit for integer representation of temporal points was proposed in 2004 under the name TimeRef, splitting a second into 14,112,000 parts.
[3]
This makes 1 TimeRef equivalent to 50 flicks.
Etymology
[
edit
]
The word
flick
is a
portmanteau
of
frame
(as in e.g. animation frame) and
tick
(as in computer instruction cycle).
[2]
References
[
edit
]
- ^
"OculusVR/Flicks"
.
GitHub
. Retrieved
21 October
2018
.
- ^
a
b
"Facebook invents new unit of time"
.
BBC News
. 21 October 2018
. Retrieved
21 October
2018
.
- ^
Raphael Troncy, Jean Carrive, Steffen Lalande and Jean-Philippe Poli (2004). "A Motivating Scenario for Designing an Extensible Audio-Visual Description Language".
CS1 maint: multiple names: authors list (
link
)
External links
[
edit
]