1). Interlace vs Progressive Scanning: What's the Difference? By : Mitchell Medford
Interlaced scanning
Interlaced scan-based images use techniques developed for CRT (Cathode Ray Tube) TV monitor displays, made up of 576 visible horizontal lines across a standard TV screen. Interlacing divides these into odd and even lines and then alternately refreshes them at 30 frames per second. The slight delay between odd and even line refreshes creates some distortion or 'jaggedness'.
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