Appendix A
Common terms used in CCTV
1080i. One of the resolution specs used in the HDTV. 1080i stands for resolution of 1920 × 1080 pixels, and the little “i” means that the video is being interlaced. Other common HDTV resolutions are 720i and 720p.
1080p. Same as above but with progressive scanning.
16:9. Aspect ratio of the High Definition (HD) television standard.
4:3. Aspect ratio of the Standard Definition (SD) television standard.
4k. A new and higher definition television standard with four times the resolution of HD (3,840 x 2,160 pixels).
8k. Experimental higher resolution of four times the 4k, or 16 times the HD (7,680 x 4,320 pxels), ...
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