INPUT CLIP
The clip to which grain is to be added.
COLOUR
Red (Min: 0.0 Max: 100.0 Default: 2.0)
Controls the average amount of red in the grain noise (actually the standard deviation of
the red). For many kinds of color film, under 'normal' exposure and development
conditions, red is the quietest record (has the least grain).
Green (Min: 0.0 Max: 100.0 Default: 4.0)
Controls the average amount of green in the grain noise. For many kinds of film, green is
somewhat noisier than red, but only a little.
Blue (Min: 0.0 Max: 100.0 Default: 20.0)
Controls the average amount of blue in the grain noise. For many kinds of film, blue is by
far the noisiest record under normal conditions of use.
GRAIN
Size (Min: 0 Max: 25 Default: 0)
Controls the grain cluster size in pixels. If set to zero, grains do not
cluster.
Monochrome (Default: Off)
Off=0: sepparate amounts of grain are added for red, green and blue.
On=1: the grain noise effects red, green and blue equally. The grain strength is the
average of Red, Green and Blue.
Bias (Default: Off)
Off=0: the grain is evenly distributed.
On=1: more grain appears in darker areas than in lighter areas. This is generally
true for many films.
PRINCIPLE OF OPERATION
Grain is treated as additive, normally distributed random noise. If grain size is greater
than zero, individual grain pixels are made more likely to occur in clumps with a radius
of grain size pixels. If grain size is very large (> 10) processing time will increase
significantly. However, even for high-resolution pictures, grain size greater than 5 is
likely to look unrealistic, so this is not a problem.