480i

Television Portal

480i is the shorthand name for a video mode. The i, which is sometimes uppercase, stands for interlaced, the 480 for a vertical frame resolution of 480 lines. The digitally transmitted horizontal resolution is usually 720 or 704 pixels with an aspect ratio of 4:3 and therefore a display resolution of 640 × 480 (VGA); that is standard-definition television (SDTV).

The field rate (not the frame rate) is usually (60/100.1% ≈) 59.94 hertz for color TV and can be rounded up to 60 Hz. There are several conventions for written shorthands for the combination of resolution and rate: 480i60, 480i/60 (EBU) and 480/60i. 480i is usually used in countries that conventionally use NTSC (North America, Japan), because the 525 transmitted lines at 60 hertz of analogue NTSC contain 480 visible ones. 480i can be transported by all major digital television formats, ATSC, DVB and ISDB. NTSC DVDs use 480i when high motion is desired, but for movies 24 progressive frames per second (480p) are used instead. The 480i resolution is used in most standard-definition TVs.

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v • d • e Broadcast video formats Television Analog525 lines NTSC · NTSC-J · PAL-M625 lines PAL · PAL-N/NC · PALplus · SECAM Audio BTSC (MTS) · NICAM-728 · Zweiton (A2 / IGR) · EIAJHidden signals Captioning · Teletext · CGMS-A · GCR · PDC · VBI · VEIL · VITC · WSS · XDSDefunct systems Pre-1940 · 405 lines · 819 lines · Baird-Nipkow · MAC · MUSE

Digital Interlaced SDTV(480i · 576i) · HDTV(1080i) Progressive LDTV(240p · 288p · 1seg) · EDTV(480p · 576p) · HDTV(720p · 1080p) MPEG-2standards ATSC · DVB · ISDB · DMB-T/H MPEG-4 AVCstandards DMB-T/H · DVB · SBTVD · ISDB(1seg) Audio AC3(5.1) · MPEG Multichannel · PCM · LPCM · AACHidden signals Captioning · Teletext · CPCM · Broadcast flag · AFD · EPG

Digital cinema UHDV (2540p · 4320p) · DCI Technical issues 14:9 compromise · MPEG transport · Reverse Standards Conversion · Standards conversion · Video processing · Video on demand · HDTV blur v • d • e Digital Video ResolutionsDesignation Usage Examples Definition (lines) Rate (Hz) Interlaced (fields) Progressive (frames)

Low; MP@LL LDTV, VCD240; 288 (SIF) 24, 30; 25

Standard; MP@ML SDTV, SVCD, DVD, DV480 (NTSC, PAL-M) 60 24, 30576 (PAL, SECAM) 50 25

Enhanced EDTV480; 576 60; 50

High; MP@HL HDTV, BD, HDV720 24, 30, 60; 25, 501080 50, 60 24, 30; 25

This table illustrates total horizontal and vertical pixel resolution via box size. It does not accurately reflect the screen or pixel shape (aspect ratio) of these formats, which is either 4:3, or 16:9. Categories: Video formatsHidden categories: Articles lacking sources from March 2008 | All articles lacking sources