1080i is a shorthand name for a category of video modes. The number 1080 stands for 1080 lines of vertical resolution, while the letter i stands for interlaced or non-progressive scan. 1080i is considered to be an HDTV video mode. The term usually assumes a widescreen aspect ratio of 16:9, implying a horizontal resolution of 1920 pixels and a frame resolution of 1920 × 1080 or about 2.07 million pixels. The frame rate in hertz can be either implied by the context or specified after the letter i. The two frame rates in common use are 25 and 30 Hz, with the former (1080i25) generally being used in traditional PAL and SECAM countries (Europe, Australia, much of Asia, Africa), and the latter (1080i30) being used in traditional NTSC countries (e.g. United States, Canada and Japan). Both variants can be transmitted by both major digital television formats, ATSC and DVB. The European Broadcasting Union (EBU), prefers to use the resolution and field rate separated by a slash, as in 1080i/30 and 1080i/25, likewise 480i/30 and 576i/25. Shorthand is an abbreviated, symbolic writing method that improves speed of writing or brevity as compared to a normal method of writing a language. ... For other uses, see Video (disambiguation). ... Interlace is a technique of improving the picture quality of a video signal without consuming any extra bandwidth. ... Progressive scan Progressive or noninterlaced scanning is any method for displaying, storing or transmitting moving images in which the lines of each frame are drawn in sequence. ... High-definition television (HDTV) is a digital television broadcasting system with greater resolution than traditional television systems (NTSC, SECAM, PAL). ... The inner box (green) is the format used in most pre-1952 films and pre-widescreen television. ... For other uses, see Aspect ratio. ... This example shows an image with a portion greatly enlarged, in which the individual pixels are rendered as little squares and can easily be seen. ... Frame rate, or frame frequency, is the measurement of the frequency (rate) at which an imaging device produces unique consecutive images called frames. ... This article is about the SI unit of frequency. ... For other uses, see PAL (disambiguation). ... SECAM, also written SÉCAM (Séquentiel couleur à mémoire, French for Sequential Color with Memory), is an analog color television system first used in France. ... NTSC is the analog television system in use in Canada, Japan, Mexico, the Philippines, South Korea, Taiwan, the United States, and some other countries, mostly in the Americas (see map). ... Digital television (DTV) is a telecommunication system for broadcasting and receiving moving pictures and sound by means of digital signals, in contrast to analog signals used by analog (traditional) TV. DTV uses digital modulation data, which is digitally compressed and requires decoding by a specially designed television set, or a... “ATSC” redirects here. ... Official DVB logo, found on compliant devices DVB, short for Digital Video Broadcasting, is a suite of internationally accepted open standards for digital television. ... EBU redirects here. ... Due to technical limitations, /. redirects here. ...

1080i is directly compatible with CRT-based HDTV sets. CRT-based HDTV never entered the market in large volumes. 1080i is compatible with newer 720p- and 1080p-based televisions but must be deinterlaced first in order to be displayed on those sets. Cathode ray tube employing electromagnetic focus and deflection Cutaway rendering of a color CRT: 1. ... Cathode ray tube employing electromagnetic focus and deflection Cutaway rendering of a color CRT: 1. ... JOHN HERMAN SUCKS FAT DICK ... wow mike is a flamming home i wish i wasnt his friend. ... Deinterlacing is the process of converting interlaced video (a sequence of fields) into a non-interlaced form (a sequence of frames). ...

Due to revision of the NTSC format when color became available, the frame rate of actual 1080i broadcasts is usually 0.1% slower than is implied. For example, a 1080i30 or "30 Hz" transmission actually displays about 29.97 frames each second. Both the straight 24/30/60 and 23.976/29.97/59.94 frequencies are supported by current standards.

Progressive format 1080p50 or 60 is foreseen as the future broadcasting standard for production^[1]. wow mike is a flamming home i wish i wasnt his friend. ...

For a comparison between 1080i and 720p, see the 720p article. JOHN HERMAN SUCKS FAT DICK ...

1080i vs 1080p

To compare 1080i and 1080p, it is important to compare frame-rates. Due to interlacing, 1080i has twice the frame-rate but half the resolution of a 1080p signal using the same bandwidth, although, also due to interlacing, 1080i looks to be the same resolution, although with more flicker. Faster frame-rates are especially useful in sports shows and other shows with fast-moving action. However, on some flat screens that do not support interlacing, this instead becomes smeared or jarred artifacts. Interlacing is a method of displaying images on a raster-scanned display device, such as a cathode ray tube (CRT). ...

Current digital television broadcast systems and standards are not equipped for 1080p50/60 transmission. Also, the majority of consumer televisions offered for sale are currently not equipped to receive or decode a 1080p signal at any frequency. It is less bandwidth-intensive to broadcast a film at 1080p24 than 1080i30, since 20% less data would be transferred. In addition, when the source material is 24 frames per second, as are most films, it would be easy to convert a 1080p24 broadcast to an NTSC 1080i30 format using a 3:2 pulldown process (see telecine). Moreover, displaying a p24 broadcast on an i50 system (such as PAL) requires the speed of video and audio be increased by over 4% (to 25 frames per second). Bandwidth is the difference between the upper and lower cutoff frequencies of, for example, a filter, a communication channel, or a signal spectrum, and is typically measured in hertz. ... This article is about motion pictures. ... Telecine (IPA pronunciation: . Phonetic: tel-e-Sin-ee; tel-e-Sin-a as cine is the same root as in cinema; also tele-seen.) is the process of transferring motion picture film into electronic form, or the machine used in this process. ...

For videos the frames (25 or 30 per second) are segmented into two interlaced fields with equal time index (psf, progressive in or with segmented frames). The deinterlacer has to perform a simple weave only. This ensures compatibility with 1080i25/30 with only a little less coding efficiency than 1080p25/30 and half the bandwidth requirement of 1080p50/60, but the SDTV problems of PAL speed-up and Telecine judder remain. Deinterlacing is the process of converting interlaced video (a sequence of fields) into a non-interlaced form (a sequence of frames). ... For other uses, see PAL (disambiguation). ... Telecine (IPA pronunciation: . Phonetic: tel-e-Sin-ee; tel-e-Sin-a as cine is the same root as in cinema; also tele-seen.) is the process of transferring motion picture film into electronic form, or the machine used in this process. ...

Display standards comparison The display resolution of a digital television or computer display typically refers to the number of distinct pixels in each dimension that can be displayed. ... MPEG-2 is a standard for the generic coding of moving pictures and associated audio information [1]. It is widely used around the world to specify the format of the digital television signals that are broadcast by terrestrial (over-the-air), cable, and direct broadcast satellite TV systems. ... Low-definition television or LDTV refers to television systems that have a lower resolution than Standard Definition Television systems. ... VCD redirects here. ... An acronym for Standard Input Format, this video format was developed to allow the storage and transmission of digital video. ... ... ... ... Standard-definition television or SDTV refers to television systems that have a lower resolution than HDTV systems. ... Compact Disc Super Video (SVCD) logo/trademark Super Video CD (Super Video Compact Disc or SVCD) is a format used for storing video on standard compact discs. ... DVD (also known as Digital Versatile Disc or Digital Video Disc) is a popular optical disc storage media format. ... A MiniDV Camcorder For other uses, see DV (disambiguation). ... NTSC is the analog television system in use in Canada, Japan, Mexico, the Philippines, South Korea, Taiwan, the United States, and some other countries, mostly in the Americas (see map). ... PAL-M is the TV system used in Brazil. ... 480i is the shorthand name for a video mode. ... 480p is the shorthand name for a video mode. ... For other uses, see PAL (disambiguation). ... SECAM, also written SÉCAM (Séquentiel couleur à mémoire, French for Sequential Color with Memory), is an analog color television system first used in France. ... 576i is the shorthand name for a video mode. ... 576p is the shorthand name for a video mode. ... Enhanced-definition television, extended-definition television, or EDTV is a CEA marketing shorthand term for certain digital television (DTV) formats. ... 480p is the shorthand name for a video mode. ... 576p is the shorthand name for a video mode. ... High-definition television (HDTV) is a digital television broadcasting system with greater resolution than traditional television systems (NTSC, SECAM, PAL). ... HD-DVD disc HD DVD (for High Density Digital Versatile Disc) is a digital optical media format which is being developed as one standard for high-definition DVD. HD DVD is similar to the competing Blu-ray Disc, which also uses the same CD sized (120 mm diameter) optical data... A Blu-ray Disc (also called BDray) is a high-density optical disc format for the storage of digital information, including high-definition video. ... For the HDV virus, see Hepatitis D. HDV is an inexpensive high-definition video recording format which uses MPEG2 compression to fit HD content onto the same DV or MiniDV tapes originally developed for standard definition recording. ... JOHN HERMAN SUCKS FAT DICK ... wow mike is a flamming home i wish i wasnt his friend. ... Image File history File links Common_Video_Resolutions. ...

See also

• 1080p, 720p, 720i, 576p, 480p, 480i
• High-definition television (HDTV)

wow mike is a flamming home i wish i wasnt his friend. ... JOHN HERMAN SUCKS FAT DICK ... Definition 720i is a technical error found in numerous sources and publications. ... 576p is the shorthand name for a video mode. ... 480p is the shorthand name for a video mode. ... 480i is the shorthand name for a video mode. ... High-definition television (HDTV) is a digital television broadcasting system with greater resolution than traditional television systems (NTSC, SECAM, PAL). ...

References

External links

• High Definition (HD) Image Formats for Television Production (EBU technical publication)
• 1080i vs. 1080p HDTV: should you care? - CNET Review - October 24, 2005
• What is 1080i?