Lesson plan
576p
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 pixels (the frame rate can be given explicitly after the letter). Usually it corresponds to a digital video mode with a 4:3 anamorphic resolution of 720 x 576 and a frame rate of 25 frames per second (576p25), and thus using the same bandwidth and carrying the same amount of pixel data as 576i, but other resolutions and frame rates are possible. ITU-R Recommendation BT.1358 allows the following resolutions, coded as R'G'B' or YC B C R , with timings compatible with BT.656: * 1024 x 576p (16:9 square pixel format) * 960 x 576p * 936 x 576p (based on 960 x 576p, blanking the first and last 12 pixels of each line) * 864 x 576p * 768 x 576p (4:3 square pixel format) * 720 x 576p (4:3 anamorphic) * 704 x 576p (based on 720 x 576p, blanking the first and last 8 pixels of each line) * 640 x 576p * 576 x 576p * 544 x 576p * 480 x 576p 576p is considered standard definition for PAL regions. It can be transported by both major digital television formats (ATSC and DVB) and on DVD-Video (if limited to 25 fps). It is defined as a valid enhanced-definition television resolution in the SMPTE standard 344M. SMPTE 344M defines a 576p50 standard with twice the data rate of BT.601, using active pixels with horizontal blanking pixels.
Article summary
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 pixels (the frame rate can be given explicitly after the letter). Usually it corresponds to a digital video mode with a 4:3 anamorphic resolution of 720 x 576 and a frame rate of 25 frames per second (576p25), and thus using the same bandwidth and carrying the same amount of pixel data as 576i, but other resolutions and frame rates are possible. ITU-R Recommendation BT.1358 allows the following resolutions, coded as R'G'B' or YC B C R , with timings compatible with BT.656: * 1024 x 576p (16:9 square pixel format) * 960 x 576p * 936 x 576p (based on 960 x 576p, blanking the first and last 12 pixels of each line) * 864 x 576p * 768 x 576p (4:3 square pixel format) * 720 x 576p (4:3 anamorphic) * 704 x 576p (based on 720 x 576p, blanking the first and last 8 pixels of each line) * 640 x 576p * 576 x 576p * 544 x 576p * 480 x 576p 576p is considered standard definition for PAL regions. It can be transported by both major digital television formats (ATSC and DVB) and on DVD-Video (if limited to 25 fps). It is defined as a valid enhanced-definition television resolution in the SMPTE standard 344M. SMPTE 344M defines a 576p50 standard with twice the data rate of BT.601, using active pixels with horizontal blanking pixels.
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Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
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