ppmntsc
Adjust colors to NTSC broadcast safe range
TLDR
Convert to NTSC-safe colors
$ ppmntsc [input.ppm] > [output.ppm]
Verbose output$ ppmntsc -verbose [input.ppm] > [output.ppm]
SYNOPSIS
ppmntsc [options] [file]
DESCRIPTION
ppmntsc adjusts the colors in a PPM image to fall within the legal range for NTSC television broadcast. Colors that exceed the NTSC signal limits are clipped to the nearest legal value, preventing artifacts like blooming and color bleeding on broadcast displays.
The -pal option switches to PAL broadcast limits instead. The verbose mode reports how many pixels were adjusted and by how much, helping assess whether the source image is significantly out of gamut. Part of the Netpbm toolkit.
PARAMETERS
FILE
Input PPM file.-verbose
Show adjustment info.-pal
Use PAL limits instead.
CAVEATS
For video production. Part of Netpbm suite.
HISTORY
ppmntsc was created as part of Netpbm for NTSC color compliance.