[MEncoder-users] Flashvideo for YouTube using mencoder

[RC]

On Fri, 22 Feb 2008 08:48:34 -0700
Mark Lehrer <mark at knm.org> wrote:

> I'll bet on Wikipedia you can find the exact reason for this, I'm
> sure it will be similar to how they came up with 4:3 screen sizes;
> it was just an arbitrary number that someone picked.

B&W NTSC was exactly 30fps.  With color, the frame rate was slowed
slightly so that the luma and chroma would be offset, to prevent
interference between the two.