What Idiot Designed This?!
summary
Shows why common video oddities are historical compromises: mains power frequency (60Hz/50Hz) drives clocking so analog TV picks 30/60 and 25 families, interlacing is a practical fix for dimming phosphors that actually works, adding color shifts the clock and creates 29.97 fps, vertical counts give 480i, and MPEG-2’s odd 188-byte packet traces to ATM design yielding a 53-byte ATM cell compromise. Evidence comes from period engineering journals, Google Books and Google Earth location checks, and analysis of power-plant generator specs from the 1920s.
AI-written summary · about
chapters (11)
- 0:00Intro
- 1:36What is 5Y
- 2:56Frame Rates
- 5:45Electronic Television
- 6:23The Plaque
- 8:40Google Books
- 10:00Journal of Electricity
- 11:58Back to Green Street
- 14:42Interlacing
- 17:20Color
- 21:18Transport Stream
related talks
14mOrigins of many strange things in video
57mGeek Out - How television led to streaming video on your mobile phone
54mGeek Out - How television led to streaming video on your mobile phone
55mComputing in the 1960s
12mCurses!!
01h 14mEyes Have Ears Analog Synaesthesia...
35mNobody Knows What Time It Is
44mColossus: The First Electronic Computer