Ppmtoyuvsplit User Manual(0) Ppmtoyuvsplit User Manual(0) NAME ppmtoyuvsplit - convert a PPM image to 3 subsampled raw YUV files SYNOPSIS ppmtoyuvsplit basename [ppmfile] DESCRIPTION This program is part of Netpbm(1). ppmtoyuvsplit reads a PPM image as input. Produces 3 raw files basename.Y, basename.U and basename.V as output. The output files are the subsampled raw YUV representation of the input PPM image, as required by the Stanford MPEG codec. The Y output file contains a byte for each pixel in the image, with the rows going from top to bottom and the columns within each row going left to right. The U and V output files are arranged similarly, except that each byte represents a square of 4 pixels of the image. The value is the arithmetic mean of the value for each of those 4 pixels. Hence, the Y file is 4 times the size of the U file or V file. The YUV values are scaled according to CCIR.601, as assumed by MPEG. SEE ALSO yuvsplittoppm(1), ppmtoyuv(1), ppmtoeyuv(1), ppmtompeg(1), ppm(1) AUTHOR Copyright (C) 1993 by Andre Beck. (Andre_Beck AT IRS.de) Based on ppmtoyuv.c DOCUMENT SOURCE This manual page was generated by the Netpbm tool 'makeman' from HTML source. The master documentation is at http://netpbm.sourceforge.net/doc/ppmtoyuvsplit.html netpbm documentation 06 March 2003 Ppmtoyuvsplit User Manual(0)
Generated by $Id: phpMan.php,v 4.55 2007/09/05 04:42:51 chedong Exp $ Author: Che Dong
On Apache
Under GNU General Public License
2024-03-29 07:11 @3.219.167.163 CrawledBy claudebot