PAL video timing specification

General timing

Line period 64 us (Micro-seconds)
Line blanking 12.05 +- 0.25 us
Line sync 4.7 +- 0.1 us
Front porch: 1.65 +- 0.1 us
Burst start 5.6 +- 0.1 us after sync start.
Burst 10 +- 1 cycles

a = line sync
b = back porch

Rec.601 digital video:

720 samples per line, at 13.5 MHz sampling (with digital blanking)
or 702 samples per line, analogue blanking.
Note: Pixels are not square.

The information in this article is based on article posted to sci.engr.television.broadcast newsgroup 13 Nov 1996 by Richard Salmon ([email protected]) and correction posted to same newsgroup by Peter Harris ([email protected]).