576p is the shorthand name for a video display resolution. 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. The frame rate can be given explicitly after the letter.[1]
[edit] 576p25
576p25 has a frame rate of 25 frames per second, and thus uses the same bandwidth and carries the same amount of pixel data as 576i; as such, 576p25 is considered to be standard definition. It can be used on analog PAL or SECAM systems, where it may be transported as a 576i signal with both interlaced fields corresponding to a unique frame. PALplus supports it via a "movie" mode signal flag. It can also be transported by both major digital television formats, ATSC and DVB, and on DVD.
[edit] 576p50
With doubled temporal resolution, 576p50 is considered enhanced-definition television (EDTV). In some countries, such as Australia, the 576p resolution standard is technically considered high-definition and was in use by the Special Broadcasting Service (SBS TV) (16:9 the format has aspect ratio 1.468), eventually replaced by 720p for its high-definition subchannel. The Seven Network initially used 576p for its high-definition subchannel, but now uses 1080i instead.
[edit] See also
[edit] References
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Television
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625 lines
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Hidden signals
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Defunct systems
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| Designation |
| Usage examples |
Definition (lines) |
Rate (Hz) |
| Interlaced (fields) |
Progressive (frames) |
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Low,
MP@LL |
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Standard,
MP@ML |
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| Enhanced |
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High,
MP@HL |
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| Ultra High |
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