576p
Encyclopedia : 5 : 57 : 576 : 576p
576p is the shorthand name for a video mode. The p stands for progressive scan, i.e. non-interlaced, the 576 for a vertical resolution of 576 lines, usually with a horizontal resolution of 720 or 704 pixels. In other words, standard-definition television (SDTV). The frame rate (in this case equal to the field rate) is usually 25 or 50 hertz and can be given explicitly after the letter. It is usually used in former PAL or SECAM countries for these can be 576p25, but analogue. With doubled temporal resolution, 576p50 is considered enhanced-definition television (EDTV). It can be transported by both major digital television formats, ATSC and DVB, 576p25 and on DVD.
| 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 | ||
|
| ||||
| 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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