720p

This article needs additional citations for verification. Please help improve this article by adding reliable references. Unsourced material may be challenged and removed. (September 2009) This chart shows the most common display resolutions, 720p shown in blue. 720p is the shorthand name for a category of HDTV video modes having a resolution of 1280×720 (for a total of 0.92 megapixels or 921,600 pixels) and a progressive scan. The number 720 stands for the 720 horizontal scan lines of display resolution (also known as 720 pixels of vertical resolution), while the letter p stands for progressive scan or non-interlaced. When broadcast at 60note 1 frames per second, 720p features the highest temporal (motion) resolution possible under the ATSC and DVB standards. 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.2 In fact, no proposed or existing broadcast standard permits 720 interlaced lines in a video frame at any frame rate.3 Contents 1 Comparison with 1080i 2 Uses 3 See also 4 Notes 5 References 6 External links // Comparison with 1080i Progressive scanning reduces the need to prevent flicker by anti-aliasing single high contrast horizontal lines.45 It is also easier to perform high-quality 50/60 Hz conversion and slow-motion replays with progressive video. In high-motion scenes, 720p has higher vertical resolution than 1080i (720 lines versus 540 lines), making it preferable for sporting events such as auto racing and basketball that move at a very fast pace on live television. The main advantage for 720p is to reduce the 3:2 artefact in transfer from 24fps film to 480i or 1080i 30fps 60Hz. The 576i and 1080i 25fps 50Hz modes do not have pull down artefacts as film frames are simply played at 25fps and the pitch corrected on audio by 24/25ths. Unlike 480i 29.97fps and 1080i 29.97fps, the 576i and 1080i 25fps 50Hz can be easily converted to progressive if the source was 24fps film. As a result while 720p is used for USA broadcast (1280x720p is same bandwidth approximately as 1920x1080i), 720p is not used in Europe.citation needed Since European TV is 576 rather than 480 lines visible, the 720p mode is too small an improvement. Thus all European HD broadcast is 1440x1080i or 1920x1080i (25fps, 50Hz) depending on bandwidth constraints.citation needed Uses In the United States, 720p is the preferred format for Fox, ABC, A&E Television Networks, Ion Television, DirecTV's The 101 Network, and Epix (TV network).6 See also Television portal 1440p, 1080p, 1080i, 720i, 576p, 480p, 480i, 360i, 240p High-definition television (HDTV) Extreme High Definition (XHD) High resolution Notes ^ It is often actually broadcast at 60/1.001 FPS, which is approximately 59.94.1 References ^ Hoffner, Randy (2008-01-09). "Will the End of NTSC Be the End of 59.94?". TV Technology. http://www.tvtechnology.com/article/60026. Retrieved 2010-10-08.  ^ Briere, Daniel; Patrick Hurley (2006). HDTV for Dummies. For Dummies. p. 13. http://books.google.com/books?id=Jb62Hkrj0oYC&printsec=frontcover&dq=hdtv+for+dummies&client=firefox-a.  ^ "ATSC Standard: Video System Characteristics of AVC in the ATSC Digital Television System". 2008-07-29. http://www.atsc.org/standards/a_72_part_1.pdf. Retrieved 2008-10-17. dead link ^ "720p". AfterDawn. 2010-08-10. http://www.afterdawn.com/glossary/term.cfm/720p. Retrieved 2010-10-08.  ^ "720p". CNET Glossary. http://reviews.cnet.com/4520-6029_7-6301006-1.html. Retrieved 2010-10-08.  ^ Bradshaw, Brian (2009-03-14). "HDTV: What Is 1080p?". B.V. Technology. http://bradshaw-vacuum-technology.com/hdtv_screen_resolution_b.htm. Retrieved 2010-10-08.  External links HD standards in use. v · d · eDigital video resolutions Designation Usage Examples Definition (lines) Rate (Hz) Interlaced (fields) Progressive (frames) Low; MP@LL LDTV, VCD, HTV 240; 288 (SIF)   24, 30; 25 Standard; MP@ML SDTV, SVCD, DVD, DV 480 “NTSC”; 576 “PAL” 60; 50 24, 30; 25 Enhanced EDTV 480; 576   60; 50 High; MP@HL HDTV, BD, HD DVD, HDV 720   24, 30, 60; 25, 50 1080 50, 60 24, 30; 25 Ultra High UHDTV 4320   60 v · d · eBroadcast video formats  Television Analog 525 lines System M · NTSC · NTSC-J · PAL-M 625 lines PAL · PAL-N/NC · PALplus · SECAM Audio BTSC (MTS) · NICAM-728 · Zweiton (A2 / IGR) · EIAJ · SAP  · Sound-in-Syncs Hidden signals Captioning · Teletext · CGMS-A · GCR · PDC · VBI · VEIL · VIT  · VITC  · WSS  · XDS · EPG Defunct systems Pre-1940 · Baird-Nipkow · 180 lines · 405 lines · 441 lines · 819 lines · MAC · MUSE Digital Interlaced SDTV (480i · 576i) · HDTV (1080i) Progressive LDTV (240p · 288p · 1seg) · EDTV (480p · 576p) · HDTV (720p · 1080p) · UHDTV (4320p) MPEG-2 standards ATSC · DVB · ISDB · DMB-T/H · DVB 3D-TV MPEG-4 AVC standards ATSC 2.0 (A/72) · DMB · DMB-T/H · DVB · SBTVD · 1seg Audio AC-3 (5.1) · DTS · MPEG-1 Audio Layer II · MPEG Multichannel · PCM · LPCM · AAC · HE-AAC Hidden signals Captioning · Teletext · CPCM · Broadcast flag · AFD · EPG  Digital cinema 2540p · DCI  Technical issues 14:9 compromise · Moving image formats · MPEG transport · Reverse Standards Conversion · Standards conversion · Video processing · Video on demand · HDTV blur This article about television technology is a stub. 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