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What is NTSC, PAL and SECAM video standard or system?
What is NTSC video standard?
NTSC, named for the National Television System(s) Committee, is the analog television system that is/was used in most of the Americas, Japan, South Korea, Taiwan, Burma, and some Pacific island nations and territories. NTSC is also the name of the U.S. standardization body that developed the broadcast standard.
NTSC color encoding is used with the system M television signal, which consists of 29.97 interlaced frames of video per second, or the nearly identical system J in Japan. Each frame consists of a total of 525 scanlines, of which 486 make up the visible raster.
What is PAL video standard?
PAL, short for Phase Alternating Line, is the analogue television encoding system used in broadcast television systems in many countries outside of the U.S and Japan.
The term PAL is often used informally to refer to a 625-line/50 Hz, television system, and to differentiate from a 525-line/60 Hz NTSC system. Accordingly, DVDs are labelled as either PAL or NTSC (referring informally to the line count and frame rate) even though technically the discs do not have either PAL or NTSC composite colour. The line count and frame rate are defined as EIA 525/60 or CCIR 625/50. PAL and NTSC are only the method of the colour transmission used.
What is SECAM?
SECAM (Sequential Color Memory) is used sparingly around the world and can be found in France, parts of Greece, Eastern Europe, Russia, Africa and a few other parts of the world. However, any SECAM country can display PAL tapes in full color, but not all PAL countries can display all SECAM tapes in color. Only if they are true SECAM and not MESECAM can those VCR's display SECAM.