Cxar, Cxar content aspect ratio – Quantum Data 802BT User Manual
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Appendix A Command Reference
CXAR
Content Aspect Ratio
Class
Format parameter setting - HDMI Active Video
Description
Sets the aspect ratio of the source image content.
Command syntax
CXAR aspect_ratio
aspect_ratio
0.75 to ˜2.39
The following table provides a listing of established aspect ratios.
Aspect Ratio
Symbol
Description
Examples
0.750
OT or T
90
Television Portrait
3x4, 480x640, 600x800, 768x1024,
960x1280, 1200x1600
0.800
OG or G
90
Workstation Graphics
Portrait
4x5, 1024x1280, 1280x1600
1.000
Q
Quadrate, "Square”
1x1, 512x512, 1024x1024
1.250
G
Workstation Graphics
5x4, 1280x1024, 1600x1280
1.333…
T (A)
1
1. The letters in parenthesis are the letters that we used to use, before we updated our aspect ratio symbols for compatibiliity
with existing film industry standards (i.e. the symbols defined in SMPTE RP40).
SDTV / Silent Film
4x3, 640x480, 800x600, 1024x768,
1280x960, 1600x1200
˜1.37
C (B)
1
Academy
2
“Classic”
with sound
2. In 1932, the shape of film was changed from 1.33:1 to 1.37:1 in order to better accommodate the new optical soundtrack that
was added a few years earlier. This slightly wider shape is the true aspect ratio of “classic” film. The aperture is commonly
referred to as “Academy” and was the shape of the vast majority of U.S. films produced until the 1950s.
˜4x3, 0.825x0.602 SMPTE RP40 35mm "C"
1.444…
I
IMAX™
13x9, IMAX™
1.500
V (T)
1
Vista Vision™
3x2, 1152x768 Apple Computer
(uncropped) Vista Vision™
1.555…
M (V)
1
Mid
14x9, AFD Shoot and Protect (half-way
between 4x3 and 16x9)
1.600
D
16 Decimal
16x10, 1728x1080, 1280x800, see VESA
CVT 1.0
1.666…
E
European Film, "1.66
5x3, 1200x720, 1280x768, 1800x1080
1.750
Z
Old Film
7x4, Old Metro-Goldwyn-Mayer and Disney
Films
1.777…
H
HDTV
16x9, 1280x720,1920x1080
˜1.85
A (F)
1
Film Standard (USA)
˜13x7, 1280x692, 1920x1038, 0.825x0.446
SMPTE RP40 35mm "A"
2.000
U
Univisum™
2x1, 1280x640, 1920x960
˜2.20
F (M)
1
“Flat”, MPEG "20x9”
"˜11x5, 1280x582, 1920x874, 1.912x0.870
SMPTE RP91 70mm
˜2.39
B (C)
1
Anamorphic Cinema,
“2.35”
3
3. Sometimes called “2.35”, which was the aspect ratio before it was changed to 2.39:1 in 1971 to keep splices from showing up
in the projected image.
˜12x5, 1280x536, 1920x804, 1.650x0.690
SMPTE RP40 35mm "B"