Analog Video Format
A video format describes how one device sends a video pictures to another device, or more formally, the video format describes the sequence and structure of frames that create the moving video image. Video formats are commonly known in the domain of commercial broadcast and consumer devices; most notably to date, these are the analog video formats of NTSC, PAL, and SECAM:
NTSC: (National Television Standards Committee), is the analog television system in use in the United States, Canada, Japan, South Korea, the Philippines, Mexico, and some other countries, mostly in the Americas.
PAL: (Phase Alternating Line), is a colour encoding system used in broadcast television systems in large parts of the world (as Europe - except to France and Eastern Europe).
SECAM: (Sequential Color with Memory), is an analog color television system is used in France and Eastern Europe.