Recording Formats...
Four recording standards currently being used to broadcast television around the world
Pal - 625 horizontal lines, 25 fps, Australia, UK, west Europe, China, South America
NTSC - 525 horizontal lines, 30 fps, United States, Canada, Japan
Secam - 625 horizontal lines, 50 Hz, utilizes different technology to the other two formats, France, Former USSR
HDTV - 1,080 lines, 50i
For some historical reason which I'm lazy to look for, different countries in the planet decided they should broadcast their TV programs differently, one of my guesses is that it was to make it harder to copy a broadcast, but it probably was due to electricity and voltage difficulties, as CRT monitors and old tube televisions depend a lot on the electricity's current to generate their frames per second.
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