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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 pixels and an aspect ratio of 4:3; that is 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 also on DVD.
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Visual comparison of common video/TV display resolutions
- SDTV
- 480i60, 480p30 (NTSC) 576i50, 576p25 (PAL, SECAM);
- EDTV
- 480p60; 576p50
- HDTV
- 720p24, 720p25, 720p30, 720p50, 720p60; 1080i50, 1080i60
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