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F r o m W i k i p e d i a , t h e f r e e e n c y c l o p e d i a
( R e d i r e c t e d f r o m 7 2 0 p 6 0 )
This chart shows the most common display resolutions, 720p being one of the 16:9 formats shown in blue.
720p (720 lines progressive) is a progressive HD signal format with 720 horizontal lines/1280 columns and an aspect ratio (AR ) of 16:9 , normally known as widescreen HD (1.78:1). All major HD broadcasting standards (such as SMPTE 292M ) include a 720p format, which has a resolution of 1280×720p.
The number 720 stands for the 720 horizontal scan lines of image display resolution (also known as 720 pixels of vertical resolution).[1] The p stands for progressive scan , i.e. non-interlaced. When broadcast at 60[note 1] frames per second, 720p features the highest temporal resolution possible under the ATSC and DVB standards. The term assumes a widescreen aspect ratio of 16:9 , thus implying a resolution of 1280×720 px (0.9 megapixels ).
720i (720 lines interlaced ) is an erroneous term found in numerous sources and publications. Typically, it is a typographical error in which the author is referring to the 720p HDTV format. However, in some cases it is incorrectly presented as an actual alternative format to 720p.[3] No proposed or existing broadcast standard permits 720 interlaced lines in a video frame at any frame rate.[4]
Comparison with interlace scanning
[ edit ]
Progressive scanning reduces the need to prevent flicker by anti-aliasing single high contrast horizontal lines.[5] [6] It is also easier to perform high-quality 50<->60 Hz conversion and slow-motion clips with progressive video.
Resolutions
[ edit ]
Standard
Resolution
Aspect ratio
HD
960×720p
4:3
HD
1280×720p
16:9
HD
720×1280p
9:16
Notes
[ edit ]
^ It is, however, more commonly broadcast at (60/1.001), or precisely 59.940059 , matching the NTSC SDTV field rate; this and the 50.00 Hz of PAL are still the second and third highest standard framerates.[2]
See also
[ edit ]
High-definition television (HDTV)
Image resolution
List of common resolutions
References
[ edit ]
^ Briere, Daniel; Patrick Hurley (2006). HDTV for Dummies . For Dummies . p. 13. ISBN 9780470096734 .
^ "ATSC Standard: Video System Characteristics of AVC in the ATSC Digital Television System" (PDF) . 2008-07-29. Archived from the original (PDF) on 2012-10-04. Retrieved 2011-07-24 .
^ "720p" . AfterDawn. 2010-08-10. Retrieved 2010-10-08 .
^ "720p" . CNET Glossary. Archived from the original on 2010-09-30. Retrieved 2010-10-08 .
External links
[ edit ]
t
e
Designation
Usage examples
Definition (lines)
Rate (Hz )
Interlaced (fields)
Progressive (frames)
Low, MP@LL
Standard, MP@ML
Enhanced, HMP@HML
High, MP@HL
HDTV , BD , HD DVD , HDV
720
24, 30, 60; 25, 50
1080, 1440
60; 50
24, 30, 60; 25, 50
Ultra-high
t
e
Television
Analog
405 lines
525 lines
625 lines
System B , C , D , G , H , I , K , L , N
Color systems: PAL , PAL-N , PALplus , SECAM
MAC
819 lines
1125 lines
1250 lines
Audio
Hidden signals
Historical
Digital
R e t r i e v e d f r o m " https://en.wikipedia.org/w/index.php?title=720p&oldid=1226010338 "
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● T h i s p a g e w a s l a s t e d i t e d o n 2 8 M a y 2 0 2 4 , a t 0 1 : 4 7 ( U T C ) .
● T e x t i s a v a i l a b l e u n d e r t h e C r e a t i v e C o m m o n s A t t r i b u t i o n - S h a r e A l i k e L i c e n s e 4 . 0 ;
a d d i t i o n a l t e r m s m a y a p p l y . B y u s i n g t h i s s i t e , y o u a g r e e t o t h e T e r m s o f U s e a n d P r i v a c y P o l i c y . W i k i p e d i a ® i s a r e g i s t e r e d t r a d e m a r k o f t h e W i k i m e d i a F o u n d a t i o n , I n c . , a n o n - p r o f i t o r g a n i z a t i o n .
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