Pulsating LED Tail Lights - Does anyone know how do you do this ?

[Drift]

Agreed it's the camera. PAL standard refreshes at 25FPS Vs NTSC @ 30FPS. The LED tail lights and indicators in modern vehicles are typically supplied by their own driver circuit, which as per standard high intensity LED driver circuits, modulate the output. The frequency of this is usually so high that it's barely noticeable to the naked eye except in circumstance that you catch them briefly from the corner of your eye whilst moving your head or eyes. However, the frame rate of the cameras emphasizes this effect to the point it looks almost unnatural on video footage.

[buzuki]

the lights are pulse width modulated, possibly the camera is picking this up.

[Whistler]

If you're not, like, 11 years old, why the he'll would you want Christmas lights on your ride?
You would seriously consider this AND drive it?

All class.

[Ryan_R]

Not that anyone needs to see another example of this refresh rate conflict, but you can see the same effect on these LED speed signs:

http://www.youtube.com/watch?v=fbnDn...ailpage#t=278s

I'm guessing that movie would be filmed at 30FPS if it's a GoPro camera in HD mode.