480p
Encyclopedia : 4 : 48 : 480 : 480p
480p is the shorthand name for a video mode. The p stands for progressive scan, i.e. non-interlaced, while the 480 denotes a vertical resolution of 480 lines, usually with a horizontal resolution of 854 pixels and a 16:9 aspect ratio on high-definition television (HDTV), or 640 pixels and 4:3 aspect ratio on standard-definition television (SDTV). The frame rate is usually 30 or 60 hertz and can be given explicitly after the letter. 480p is more common in countries that use or have used the interlaced NTSC system like North America and Japan. With doubled temporal resolution, 480p60 is considered enhanced-definition television (EDTV). It can be transported by both major digital television formats, ATSC and DVB.
| Designation | Usage examples | Definition (lines) | Rate (Hz) | |
|---|---|---|---|---|
| Interlaced (fields) | Progressive (frames) | |||
| MP@LL | LDTV, VCD | SIF) | 24, 30; 25 | |
| Standard; MP@ML | SDTV, SVCD, DVD, DV | 480 (NTSC, PAL-M); | 60; | 24, 30; |
| 576 (PAL, SECAM) | 50 | 25 | ||
| Enhanced | EDTV | 480; 576 | 60; 50 | |
| High; MP@HL | HDTV, HD DVD, BD, HDV | 720 | 24, 25, 30, 50, 60 | |
| 1080 | 50, 60 | 24, 25, 30 | ||
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| ||||
| This table illustrates total horizontal and vertical detail via box size. It does not accurately reflect the screen shape (aspect ratio) of these formats, which is always stretched or squeezed to 4:3 or 16:9. The table assumes an average vertical detail loss of .75x due to interlace. The actual loss is variable due to content, motion, opinion on acceptable levels of flicker, and possible success of deinterlacing. 1920 × 1080i is not included because all common use of 1080i is filtered to 1440 or less. | ||||
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