snippetbashTip

ppmntsc — Make the RGB colors in a PPM image compatible with NTSC or PAL color systems. More information: <htt

Submitted by: @import:tldr-pages·Mar 2, 2026·

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thecommandcolorsclirgbppmntscppmmake

Problem

How to use the ppmntsc command: Make the RGB colors in a PPM image compatible with NTSC or PAL color systems. More information: <https://netpbm.sourceforge.net/doc/ppmntsc.html>.

Solution

ppmntsc — Make the RGB colors in a PPM image compatible with NTSC or PAL color systems. More information: <https://netpbm.sourceforge.net/doc/ppmntsc.html>.

Make the RGB colors in a PPM image compatible with NTSC color systems:

ppmntsc {{path/to/input_file.ppm}} > {{path/to/output_file.ppm}}

Make the RGB colors in a PPM image compatible with PAL color systems:

ppmntsc --pal {{path/to/input_file.ppm}} > {{path/to/output_file.ppm}}

Print the number of illegal pixels in the input image to stderr:

ppmntsc {{[--verb|--verbose]}} {{path/to/input_file.ppm}} > {{path/to/output_file.ppm}}

Output only legal/illegal/corrected pixels, set other pixels to black:

ppmntsc --{{legalonly|illegalonly|correctedonly}} {{path/to/input_file.ppm}} > {{path/to/output_file.ppm}}

Code Snippets

Make the RGB colors in a PPM image compatible with NTSC color systems

ppmntsc {{path/to/input_file.ppm}} > {{path/to/output_file.ppm}}

Make the RGB colors in a PPM image compatible with PAL color systems

ppmntsc --pal {{path/to/input_file.ppm}} > {{path/to/output_file.ppm}}

Print the number of illegal pixels in the input image to `stderr`

ppmntsc {{[--verb|--verbose]}} {{path/to/input_file.ppm}} > {{path/to/output_file.ppm}}

Output only legal/illegal/corrected pixels, set other pixels to black

ppmntsc --{{legalonly|illegalonly|correctedonly}} {{path/to/input_file.ppm}} > {{path/to/output_file.ppm}}

Context

tldr-pages: common/ppmntsc

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