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netpbm/netpbm-manfix.patch
Josef Řídký c30242c9d5 Fix pamhomography man page issue
2021-06-02 21:55:40 +02:00

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diff -urNp a/userguide/avstopam.html b/userguide/avstopam.html
--- a/userguide/avstopam.html 2021-06-02 12:56:59.584286425 +0200
+++ b/userguide/avstopam.html 2021-06-02 15:00:33.799300026 +0200
@@ -2,12 +2,13 @@
<html><head><title>Avstopam User Manual</title></head>
<body>
<h1>avstopam</h1>
-Updated: 07 February 2010
-<br>
-<a href="#index">Table Of Contents</a>
+
+<p>Updated: 07 February 2010</p>
+
+<p><a href="#index">Table Of Contents</a></p>
<h2>NAME</h2>
-<p>avstopam - convert an AVS X image to a Netpbm image
+<p>avstopam - convert an AVS X image to a Netpbm image</p>
<h2 id="synopsis">SYNOPSIS</h2>
@@ -16,40 +17,40 @@ Updated: 07 February 2010
<h2 id="description">DESCRIPTION</h2>
-<p>This program is part of <a href="index.html">Netpbm</a>.
+<p>This program is part of <a href="index.html">Netpbm</a>.</p>
<p><b>avstopam</b> reads a Stardent <abbr title="Application
Visualization System">AVS</abbr> X image as input and produces a Netpbm
-image as output.
+image as output.</p>
<p><i>avsfile</i> is the input file, which defaults to Standard Input.
-Output is always on Standard Output.
+Output is always on Standard Output.</p>
<h2 id="options">OPTIONS</h2>
<p>There are no command line options defined specifically
for <b>avstopam</b>, but it recognizes the options common to all
programs based on libnetpbm (See <a href="index.html#commonoptions">
-Common Options</a>.)
+Common Options</a>.)</p>
<h2 id="author">AUTHOR</h2>
<p>Copyright&nbsp;&copy; 2010 Scott Pakin,
-<a href="mailto:scott+pbm@pakin.org">scott+pbm@pakin.org</a>
+<a href="mailto:scott+pbm@pakin.org">scott+pbm@pakin.org</a></p>
<h2 id="seealso">SEE ALSO</h2>
-<p><a href="pamtoavs.html">pamtoavs</a>, <a href="pam.html">pam</a>
+<p><a href="pamtoavs.html">pamtoavs</a>, <a href="pam.html">pam</a></p>
<hr>
<h2 id="index">Table Of Contents</h2>
<ul>
-<li><a href="#synopsis">SYNOPSIS</a>
-<li><a href="#description">DESCRIPTION</a>
-<li><a href="#options">OPTIONS</a>
-<li><a href="#author">AUTHOR</a>
-<li><a href="#seealso">SEE ALSO</a>
+<li><a href="#synopsis">SYNOPSIS</a></li>
+<li><a href="#description">DESCRIPTION</a></li>
+<li><a href="#options">OPTIONS</a></li>
+<li><a href="#author">AUTHOR</a></li>
+<li><a href="#seealso">SEE ALSO</a></li>
</ul>
</body>
</html>
diff -urNp a/userguide/faxformat.html b/userguide/faxformat.html
--- a/userguide/faxformat.html 2021-06-02 12:56:59.576286351 +0200
+++ b/userguide/faxformat.html 2021-06-02 15:02:58.710711998 +0200
@@ -5,10 +5,11 @@
Updated: 03 December 2008
<br>
+<h2>SYNOPSIS</h2>
<p>This page, part of the <a href="index.html">Netpbm user's guide</a>,
describes FAX formats in relation to Netpbm facilities.
-
+<h2>DESCRIPTION</h2>
<p>The ITU (formerly CCITT) publishes standards for operation of fax machines
(the idea is to provide a way to be sure that a fax machine is able to receive
a fax sent by another). These standards incidentally specify graphics file
diff -urNp a/userguide/libnetpbm_ug.html b/userguide/libnetpbm_ug.html
--- a/userguide/libnetpbm_ug.html 2021-06-02 12:56:59.584286425 +0200
+++ b/userguide/libnetpbm_ug.html 2021-06-02 14:36:35.392293125 +0200
@@ -374,7 +374,7 @@ plain format.
<h2 id="reference">Reference</h2>
<p>The <a href="libnetpbm_image.html">Libnetpbm Netpbm Image
-Processing Manual</a> describes the the <b>libnetpbm</b> functions for
+Processing Manual</a> describes the <b>libnetpbm</b> functions for
processing image data.
<p>The <a href="libpm.html">Libnetpbm Utility Manual</a>
diff -urNp a/userguide/pamfunc.html b/userguide/pamfunc.html
--- a/userguide/pamfunc.html 2021-06-02 12:56:59.585286434 +0200
+++ b/userguide/pamfunc.html 2021-06-02 14:40:09.474375441 +0200
@@ -60,7 +60,7 @@ output image.
and bit string (such as and with 01001000). For the arithmetic functions, the
function arguments and results are the fraction that a sample is of the
maxval, i.e. normal interpretation of PAM tuples. But for the bit string
-functions, the value is the the bit string whose value as a binary cipher is
+functions, the value is the bit string whose value as a binary cipher is
the sample value, and the maxval indicates the width of the bit string.
<h4>Arithmetic functions</h4>
diff -urNp a/userguide/pammixmulti.html b/userguide/pammixmulti.html
--- a/userguide/pammixmulti.html 2021-06-02 12:56:59.586286443 +0200
+++ b/userguide/pammixmulti.html 2021-06-02 14:28:03.105311615 +0200
@@ -7,8 +7,8 @@ Updated: 18 November 2018
<a href="#index">Table Of Contents</a>
-<h2>NAME</h2>
-<p>pammixmulti - blend together multiple PAM images
+<h2 id="name">NAME</h2>
+<p>pammixmulti - blend together multiple PAM images</p>
<h2 id="synopsis">SYNOPSIS</h2>
@@ -22,14 +22,14 @@ Updated: 18 November 2018
<p>Minimum unique abbreviation of an option is acceptable. You can use a
single hyphen instead of double hyphens to denote options. You can use white
space in place of the equals sign to separate an option name from its
-value.
+value.</p>
<h2 id="description">DESCRIPTION</h2>
-<p>This file is part of <a href="index.html">Netpbm</a>.
+<p>This file is part of <a href="index.html">Netpbm</a>.</p>
<p><b>pammixmulti</b> mixes two or more images to produce a new image. The
-program provides multiple ways to interpret "mix."
+program provides multiple ways to interpret "mix."</p>
<h2 id="options">OPTIONS</h2>
@@ -37,7 +37,7 @@ program provides multiple ways to interp
<p>In addition to the options common to all programs based on libnetpbm
(most notably <b>-quiet</b>, see <a href="index.html#commonoptions">
Common Options</a>), <b>pammixmulti</b> recognizes the following
-command line options:
+command line options:</p>
<dl compact>
<dt><b>--blend</b>=average|random|mask</dt>
@@ -50,7 +50,7 @@ output is produced by selecting the corr
images, chosen at random on a per-pixel basis. With
<b>--blend</b>=<code>mask</code>, each pixel in the output is produced by a
weighted average of the corresponding pixels from all the input images based
-on the grayscale level of an additional mask image.
+on the grayscale level of an additional mask image.</p>
</dd>
<dt><b>--maskfile</b>=<i>filename</i></dt>
@@ -60,7 +60,7 @@ grayscale mask file to control the blend
not grayscale, the first channel is treated as gray). Where the mask file is
black, the first image is selected. Where the mask file is white, the last
image is selected. Intermediate levels of gray select intermediate
-images.
+images.</p>
</dd>
<dt><b>--stdev</b>=<i>number</i></dt>
@@ -77,7 +77,7 @@ that includes roughly equal amounts of t
and 2 but less of the corresponding pixel from image 3. As <i>number</i>
tends towards the number of input images (going beyond that has diminishing
impact), the output tends to look more
-like <b>--blend</b>=average. <i>number</i> defaults to 0.25.
+like <b>--blend</b>=average. <i>number</i> defaults to 0.25.</p>
</dd>
<dt><b>--randomseed</b> <i>integer</i>
@@ -85,45 +85,45 @@ like <b>--blend</b>=average. <i>number</
<dd>This is the seed for the random number generator used with
<b>--blend=random</b>
-<p>Use this to ensure you get the same image on separate invocations.
+<p>Use this to ensure you get the same image on separate invocations.</p>
</dl>
<h2 id="arguments">ARGUMENTS</h2>
-<p>You supply the names of the files to mix as non-option arguments.
+<p>You supply the names of the files to mix as non-option arguments.</p>
<h2 id="examples">EXAMPLES</h2>
-<p>Average a bunch of PPM images to produce a new PAM image:
+<p>Average a bunch of PPM images to produce a new PAM image:</p>
<pre><code>
pammixmulti input*.ppm &gt;output.ppm
</code></pre>
<p>Mix these same images by taking each pixel from a randomly selected input
-image:
+image:</p>
<pre><code>
pammixmulti --blend=random input*.ppm &gt;output.ppm
</code></pre>
<p>Use a mask image to control the fading among input images on a
-pixel-by-pixel basis:
+pixel-by-pixel basis:</p>
<pre><code>
pammixmulti --blend=mask --maskfile=mask.pgm &gt;output.pam \
one.pam two.pam three.pam four.pam
</code></pre>
-<p>Do the same but with more abrupt transitions:
+<p>Do the same but with more abrupt transitions:</p>
<pre><code>
pammixmulti --blend=mask --maskfile=mask.pgm --stdev=0.0 &gt;output.pam \
one.pam two.pam three.pam four.pam
</code></pre>
-<p>and now with more gradual transitions:
+<p>and now with more gradual transitions:</p>
<pre><code>
pammixmulti --blend=mask --maskfile=mask.pgm --stdev=1.0 &gt;output.pam \
@@ -133,12 +133,12 @@ pixel-by-pixel basis:
<h2 id="history">HISTORY</h2>
-<p><b>pammixmulti</b> was new in Netpbm 10.85 (December 2018).
+<p><b>pammixmulti</b> was new in Netpbm 10.85 (December 2018).</p>
<h2 id="author">AUTHOR</h2>
-<p>Copyright 2018 Scott Pakin, scott+pbm@pakin.org.
+<p>Copyright 2018 Scott Pakin, scott+pbm@pakin.org.</p>
<h2 id="seealso">SEE ALSO</h2>
@@ -146,20 +146,20 @@ pixel-by-pixel basis:
<a href="ppmmix.html">ppmmix</a>,
<a href="pamarith.html">pamarith</a>,
<a href="pnm.html">pnm</a>,
-<a href="pam.html">pam</a>
+<a href="pam.html">pam</a></p>
<h2 id="index">Table Of Contents</h2>
<ul>
-<li><a href="#synopsis">SYNOPSIS</a>
-<li><a href="#description">DESCRIPTION</a>
-<li><a href="#options">OPTIONS</a>
-<li><a href="#arguments">ARGUMENTS</a>
-<li><a href="#examples">EXAMPLES</a>
-<li><a href="#history">HISTORY</a>
-<li><a href="#author">AUTHOR</a>
-<li><a href="#seealso">SEE ALSO</a>
+<li><a href="#synopsis">SYNOPSIS</a></li>
+<li><a href="#description">DESCRIPTION</a></li>
+<li><a href="#options">OPTIONS</a></li>
+<li><a href="#arguments">ARGUMENTS</a></li>
+<li><a href="#examples">EXAMPLES</a></li>
+<li><a href="#history">HISTORY</a></li>
+<li><a href="#author">AUTHOR</a></li>
+<li><a href="#seealso">SEE ALSO</a></li>
</ul>
</body>
diff -urNp a/userguide/pampaintspill.html b/userguide/pampaintspill.html
--- a/userguide/pampaintspill.html 2021-06-02 12:56:59.575286342 +0200
+++ b/userguide/pampaintspill.html 2021-06-02 15:06:31.354767352 +0200
@@ -2,12 +2,12 @@
<html><head><title>Pampaintspill User Manual</title></head>
<body>
<h1>pampaintspill</h1>
-Updated: 06 March 2021
+<p>Updated: 06 March 2021
<br>
-<a href="#index">Table Of Contents</a>
+<a href="#index">Table Of Contents</a></p>
<h2>NAME</h2>
-pampaintspill - smoothly spill colors into the background
+<p>pampaintspill - smoothly spill colors into the background</p>
<h2 id="synopsis">SYNOPSIS</h2>
@@ -17,17 +17,17 @@ pampaintspill - smoothly spill colors in
[<b>--wrap</b>] [<b>--all</b>]
[<b>--downsample</b>=<i>number</i>]
[<b>--power</b>=<i>number</i>] [<i>filename</i>]
-[<b>-randomseed=</b><i>integer</i>]
+[<b>-randomseed=</b><i>integer</i>]</p>
<p>Minimum unique abbreviations of option are acceptable. You may use
double hyphens instead of single hyphen to denote options. You may use
white space in place of the equals sign to separate an option name
-from its value.
+from its value.</p>
<h2 id="description">DESCRIPTION</h2>
-<p>This program is part of <a href="index.html">Netpbm</a>.
+<p>This program is part of <a href="index.html">Netpbm</a>.</p>
<p><b>pampaintspill</b> produces a smooth color gradient from all of the
non-background-colored pixels in an input image, effectively "spilling
@@ -38,27 +38,27 @@ paint" onto the background. <b>pampaint
<li><b>pampaintspill</b> accepts any number of paint
sources (non-background-colored pixels), which can lie anywhere
on the canvas. <b>pamgradient</b> accepts exactly
- four paint sources, one in each corner of the image.
+ four paint sources, one in each corner of the image.</li>
<li><b>pampaintspill</b> requires an input image while
<b>pamgradient</b> generates a new image from
- scratch.
+ scratch.</li>
<li><b>pampaintspill</b> can produce tileable output and
can control how tightly the gradient colors bind to their source
- pixels.
+ pixels.</li>
</ul>
<p>Results are generally best when the input image contains just a few, crisp
spots of color. Use your drawing program's pencil tool &mdash; as opposed to a
-paintbrush or airbrush tool &mdash; with a small nib.
+paintbrush or airbrush tool &mdash; with a small nib.</p>
<h2 id="options">OPTIONS</h2>
<p>In addition to the options common to all programs based on libnetpbm
(most notably <b>-quiet</b>, see <a href="index.html#commonoptions">
Common Options</a>), <b>pampaintspill</b> recognizes the following
-command line options:
+command line options:</p>
<dl>
<dt><b>--bgcolor</b>=<i>color</i></dt>
@@ -107,42 +107,42 @@ command line options:
<dd>This is the seed for the random number generator that generates the
pixels.
- <p>Use this to ensure you get the same image on separate invocations.
+ <p>Use this to ensure you get the same image on separate invocations.</p>
- <p>This option was new in Netpbm 10.94 (March 2021).
+ <p>This option was new in Netpbm 10.94 (March 2021).</p>
</dl>
<h2 id="seealso">SEE ALSO</h2>
<ul>
-<li><a href="pamgradient.html"><b>pamgradient</b></a>
-<li><a href="ppmmake.html"><b>ppmmake</b></a>,
-<li><a href="ppmrainbow.html"><b>ppmrainbow</b></a>,
-<li><a href="pgmramp.html"><b>pgmramp</b></a>,
-<li><a href="ppmpat.html"><b>ppmpat</b></a>,
-<li><a href="pam.html"><b>pam</b></a>
+<li><a href="pamgradient.html"><b>pamgradient</b></a></li>
+<li><a href="ppmmake.html"><b>ppmmake</b></a>,</li>
+<li><a href="ppmrainbow.html"><b>ppmrainbow</b></a>,</li>
+<li><a href="pgmramp.html"><b>pgmramp</b></a>,</li>
+<li><a href="ppmpat.html"><b>ppmpat</b></a>,</li>
+<li><a href="pam.html"><b>pam</b></a></li>
</ul>
<h2 id="history">HISTORY</h2>
-<p><b>pampaintspill</b> was new in Netpbm 10.50 (March 2010).
+<p><b>pampaintspill</b> was new in Netpbm 10.50 (March 2010).</p>
<h2 id="copyright">COPYRIGHT</h2>
<p>Copyright&nbsp;&copy; 2010 Scott Pakin,
-<a href="mailto:scott+pbm@pakin.org"><i>scott+pbm@pakin.org</i></a>.
+<a href="mailto:scott+pbm@pakin.org"><i>scott+pbm@pakin.org</i></a>.</p>
<h2 id="index">Table Of Contents</h2>
<ul>
-<li><a href="#synopsis">SYNOPSIS</a>
-<li><a href="#description">DESCRIPTION</a>
-<li><a href="#options">OPTIONS</a>
-<li><a href="#seealso">SEE ALSO</a>
-<li><a href="#history">HISTORY</a>
-<li><a href="#copyright">COPYRIGHT</a>
+<li><a href="#synopsis">SYNOPSIS</a></li>
+<li><a href="#description">DESCRIPTION</a></li>
+<li><a href="#options">OPTIONS</a></li>
+<li><a href="#seealso">SEE ALSO</a></li>
+<li><a href="#history">HISTORY</a></li>
+<li><a href="#copyright">COPYRIGHT</a></li>
</ul>
</body>
diff -urNp a/userguide/pamrecolor.html b/userguide/pamrecolor.html
--- a/userguide/pamrecolor.html 2021-06-02 12:56:59.574286333 +0200
+++ b/userguide/pamrecolor.html 2021-06-02 15:09:53.837724488 +0200
@@ -2,9 +2,9 @@
<html><head><title>Pamrecolor User Manual</title></head>
<body>
<h1>pamrecolor</h1>
-Updated: 31 July 2010
+<p>Updated: 31 July 2010
<br>
-<a href="#index">Table Of Contents</a>
+<a href="#index">Table Of Contents</a></p>
<h2>NAME</h2>
pamrecolor - alter colors without affecting luminance
@@ -22,15 +22,15 @@ pamrecolor - alter colors without affect
[<b>-randomseed=</b><i>integer</i>]
[<i>infile</i>]
-
+</p>
<p>Minimum unique abbreviation of option is acceptable. You may use double
hyphens instead of single hyphen to denote options. You may use white
-space in place of the equals sign to separate an option name from its value.
+space in place of the equals sign to separate an option name from its value.</p>
<h2 id="description">DESCRIPTION</h2>
-<p>This program is part of <a href="index.html">Netpbm</a>.
+<p>This program is part of <a href="index.html">Netpbm</a>.</p>
<p><b>pamrecolor</b> changes an image's colors to be as close as
possible to given target colors but with the constraint that the
@@ -39,17 +39,17 @@ image will look identical if both are co
(e.g. with
<a href="ppmtopgm.html">ppmtopgm</a>). You can have <b>pamrecolor</b> select
target colors randomly, specify a single hue for the entire image, or take the
-target colors from a target image.
+target colors from a target image.</p>
<p>In addition to real Netpbm images, <b>pamrecolor</b> works on pseudo-Netpbm
images based on arbitrary color spaces. You can define the color space
-explicitly or choose one of many that <b>pamrecolor</b> knows by name.
+explicitly or choose one of many that <b>pamrecolor</b> knows by name.</p>
<p>The output is a PAM image on standard output. Options control the
exact format of the PAM. If you want a PNM (PBM, PGM, or PPM) image,
use <a href="pamtopnm.html">pamtopnm</a> on the output. There is no
need to convert if you will use the image as input to a current Netpbm
-program, but many other programs don't know what a PAM is.
+program, but many other programs don't know what a PAM is.</p>
<h2 id="options">OPTIONS</h2>
@@ -57,7 +57,7 @@ program, but many other programs don't k
<p>In addition to the options common to all programs based on libnetpbm
(most notably <b>-quiet</b>, see <a href="index.html#commonoptions">
Common Options</a>), <b>pamrecolor</b> recognizes the following
-command line options:
+command line options:</p>
<dl>
@@ -76,9 +76,9 @@ the raster have different meaning. Many
images actually use a variation with a different color space. For example,
<a href="http://www.gimp.org/">GIMP</a> uses sRGB internally and if you
have GIMP generate a Netpbm image file, it really generates a variation of
-the format that uses sRGB.
+the format that uses sRGB.</p>
-<p><b>pamrecolor</b> knows the following color spaces (<i>name</i> values):
+<p><b>pamrecolor</b> knows the following color spaces (<i>name</i> values):</p>
<dl>
<dt>adobe</dt>
@@ -109,7 +109,7 @@ the format that uses sRGB.
<p>The default is "ntsc" because this is the color space that the Netpbm
formats and many graphics utilities use. As a counterexample,
<a href="http://www.gimp.org/">GIMP</a> uses sRGB as its native color
-space.
+space.</p>
<p>The luminance values <b>pamrecolor</b> uses for each of the above come from
Bruce Lindbloom's
diff -urNp a/userguide/pbmtog3.html b/userguide/pbmtog3.html
--- a/userguide/pbmtog3.html 2021-06-02 12:56:59.585286434 +0200
+++ b/userguide/pbmtog3.html 2021-06-02 14:44:07.715692749 +0200
@@ -36,7 +36,7 @@ use those encodings.
<p>In addition to the options common to all programs based on libnetpbm
(most notably <b>-quiet</b>, see <a href="index.html#commonoptions">
Common Options</a>), <b>pbmtog3</b> recognizes the following
-command line options:
+command line options:</p>
<dl>
<dt><b>-reversebits</b>
@@ -80,7 +80,7 @@ You cannot specify both.
<h2 id="history">HISTORY</h2>
<p>Before Netpbm 10.79 (June 2017), there was a different program by the same
-name in Netpbm, which was written by by Paul Haeberli
+name in Netpbm, which was written by Paul Haeberli
&lt;<a href="mailto:paul@manray.sgi.com">paul@manray.sgi.com</a>&gt; in 1989
and then modified extensively by others.
diff -urNp a/userguide/ppmtogif.html b/userguide/ppmtogif.html
--- a/userguide/ppmtogif.html 2021-06-02 12:56:59.574286333 +0200
+++ b/userguide/ppmtogif.html 2021-06-02 15:48:19.167930575 +0200
@@ -5,17 +5,17 @@
<h2>NAME</h2>
-ppmtogif - replaced by pamtogif
-
-<h2>DESCRIPTION</h2>
+<p>ppmtogif - replaced by pamtogif</p>
<p>This program is part of <a href="index.html">Netpbm</a>.
+<h2>SYNOPSIS</h2>
<p><b>ppmtogif</b> was replaced in Netpbm 10.37 (December 2006) by
<b><a href="pamtogif.html">pamtogif</a></b>.
<p><b>pamtogif</b> is mostly backward compatible with <b>ppmtogif</b>.
+<h2>DESCRIPTION</h2>
<p>One way <b>pamtogif</b> is not backward compatible with <b>ppmtogif</b>
is that to specify a transparency (alpha) mask with <b>ppmtogif</b>, you
supply the transparency as a separate pseudo-PGM image and use the
diff -urNp a/userguide/ppmtompeg.html b/userguide/ppmtompeg.html
--- a/userguide/ppmtompeg.html 2021-06-02 12:56:59.580286388 +0200
+++ b/userguide/ppmtompeg.html 1970-01-01 01:00:00.000000000 +0100
@@ -1,1294 +0,0 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.3//EN">
-<html><head><title>Ppmtompeg User Manual</title></head>
-<body>
-<h1>ppmtompeg</h1>
-Updated: 23 July 2006
-<br>
-<a href="#index">Table Of Contents</a>
-
-<h2>NAME</h2>
-ppmtompeg - encode an MPEG-1 bitstream
-
-<h2 id="synopsis">SYNOPSIS</h2>
-
-<b>ppmtompeg</b>
-[<i>options</i>]
-<i>parameter-file</i>
-
-<h2 id="description">DESCRIPTION</h2>
-
-<p>This program is part of <a href="index.html">Netpbm</a>.
-
-<p><b>ppmtompeg</b> produces an MPEG-1 video stream. MPEG-1 is the
-first great video compression method, and is what is used in Video CDs
-(VCD). <b>ppmtompeg</b> originated in the year 1995. DVD uses a more
-advanced method, MPEG-2. There is an even newer method called MPEG-4
-which is also called Divx. I don't know where one finds that used.
-
-<p>There's technically a difference between a compression method for
-video and an actual file (stream) format for a movie, and I don't know
-if it can be validly said that the format of the stream
-<b>ppmtompeg</b> produces is MPEG-1.
-
-<p>Mencoder from the <a href="http://www.mplayerhq.hu">Mplayer
-package</a> is probably superior for most video format generation
-needs, if for no other reason than that it is more popular.
-
-<p>The programming library <a href="http://pm2v.free.fr"><b>PM2V</b></a>
-generates MPEG-2 streams.
-
-<p>Use <a href="http://www.mplayerhq.hu">Mplayer</a> (not part of Netpbm)
-to do the reverse conversion: to create a series of PNM files from an MPEG
-stream.
-
-<p><i>param_file</i> is a parameter file which includes a list of
-input files and other parameters. The file is described in detail
-below.
-
-<p>To understand this program, you need to understand something about
-the complex MPEG-1 format. One source of information about this
-standard format is the section Introduction to MPEG in the <a
-href="http://www.faqs.org/faqs/compression-faq">Compression FAQ</a>.
-
-<h2 id="options">OPTIONS</h2>
-
-<p>The <b>-gop</b>, <b>-combine_gops</b>, <b>-frames</b>, and
-<b>-combine_frames</b> options are all mutually exclusive.
-
-<dl compact>
-<dt><b>-stat stat_file</b>
-
-<dd>This option causes <b>ppmtompeg</b> to append the statistics that
-it write to Standard Output to the file <i>stat_file</i> as well. The
-statistics use the following abbreviations: bits per block (bpb), bits
-per frame (bpf), seconds per frame (spf), and bits per second (bps).
-
-<p>These statistics include how many I, P, and B frames there were,
-and information about compression and quality.
-
-
-<dt><b>-quiet</b> <i>num_seconds</i>
-
-<dd> causes <b>ppmtompeg</b> not to report remaining time more often
-than every <i>num_seconds</i> seconds (unless the time estimate rises,
-which will happen near the beginning of the run). A negative value
-tells <b>ppmtompeg</b> not to report at all. 0 is the default
-(reports once after each frame). Note that the time remaining is an
-estimate and does not take into account time to read in frames.
-
-<dt><b>-realquiet</b> <dd> causes <b>ppmtompeg</b> to run silently,
-with the only screen output being errors. Particularly useful when
-reading input from stdin. The equivalent of the <b>-quiet</b>
-common option of most other Netpbm programs.
-
-<dt>
-<b>-no_frame_summary</b>
-
-<dd> This option prevents <b>ppmtompeg</b> from printing a summary
-line for each frame
-
-<dt><b>-float_dct</b>
-
-<dd> forces <b>ppmtompeg</b> to use a more accurate, yet more
-computationally expensive version of the DCT.
-
-<dt><b>-gop</b> <i>gop_num</i>
-<dd>
-causes <b>ppmtompeg</b> to encode only the numbered GOP (first GOP is 0). The
-parameter file is the same as for normal usage. The output file will be
-the normal output file with the suffix <b>.gop.</b><i>gop_num</i>.
-<b>ppmtompeg</b> does not output any sequence information.
-
-<dt><b>-combine_gops</b>
-
-<dd> causes <b>ppmtompeg</b> simply to combine some GOP files into a
-single MPEG output stream. <b>ppmtompeg</b> inserts a sequence header
-and trailer. In this case, the parameter file needs only to contain
-the SIZE value, an output file, and perhaps a list of input GOP
-files (see below).
-
-If you don't supply a list of input GOP files is used, then
-<b>ppmtompeg</b> assumes you're using the same parameter file you used
-when you created the input (with the <b>-gop</b> option) and
-calculates the corresponding gop filenames itself. If this is not the
-case, you can specify input GOP files in the same manner as normal
-input files -- except instead of using INPUT_DIR, INPUT, and
-END_INPUT, use GOP_INPUT_DIR, GOP_INPUT, and GOP_END_INPUT. If no
-input GOP files are specified, then the default is to use the output
-file name with suffix <b>.gop.</b><i>gop_num</i>, with <i>gop_num</i>
-starting from 0, as the input files.
-
-<p>Thus, unless you're mixing and matching GOP files from different
-sources, you can simply use the same parameter file for creating the
-GOP files (<b>-gop</b>) and for later turning them into an MPEG stream
-(<b>-combine_gops</b>).
-
-
-<dt><b>-frames <i>first_frame</i> <i>last_frame</i></b>
-
-<dd>This option causes <b>ppmtompeg</b> to encode only the frames numbered
-<i>first_frame</i> to <i>last_frame</i>, inclusive. The parameter
-file is the same as for normal usage. The output will be placed in
-separate files, one per frame, with the file names being the normal
-output file name with the suffix <b>.frame.</b><i>frame_num</i>. No
-GOP header information is output. (Thus, the parameter file need not
-include the GOP_SIZE value)
-
-<p>Use <b>ppmtompeg -combine_frames</b> to combine these frames later into
-an MPEG stream.
-
-
-<dt><b>-combine_frames</b>
-
-<dd> This option causes <b>ppmtompeg</b> simply to combine some
-individual MPEG frames (such as you might have created with an earlier
-run of <b>ppmtompeg -frames</b>) into a single MPEG stream. Sequence
-and GOP headers are inserted appropriately. In this case, the
-parameter file needs to contain only the SIZE value, the GOP_SIZE
-value, an output file, and perhaps a list of frame files (see below).
-
-<p>The parameter file may specify input frame files in the same manner
-as normal input files -- except instead of using INPUT_DIR, INPUT, and
-END_INPUT, use FRAME_INPUT_DIR, FRAME_INPUT, and FRAME_END_INPUT. If
-no input frame files are specified, then the default is to use the
-output file name with suffix <b>.frame.</b><i>frame_num</i>, with
-<i>frame_num</i> starting from 0, as the input files.
-
-
-
-<dt><b>-nice</b>
-
-<dd>This option causes <b>ppmtompeg</b> to run any remote processes
-"nicely," i.e. at low priority. (This is relevant only if you are
-running <b>ppmtompeg</b> in parallel mode. Otherwise, there are no
-remote processes). See 'man nice.'
-
-<dt><b>-max_machines <i>num_machines</i></b>
-
-<dd>This option causes <b>ppmtompeg</b> to use no more than
-<i>num_machines</i> machines as slaves for use in parallel encoding.
-
-<dt><b>-snr</b>
-
-<dd>This option causes <b>ppmtompeg</b> to include the signal-to-noise
-ratio in the reported statistics. Prints SNR (Y U V) and peak SNR (Y
-U V) for each frame. In summary, prints averages of luminance only
-(Y). SNR is defined as 10*log(variance of original/variance of
-error). Peak SNR is defined as 20*log(255/RMSE). Note that
-<b>ppmtompeg</b> runs a little slower when you use this option.
-
-<dt><b>-mse</b>
-
-<dd>This option causes <b>ppmtompeg</b> to report the mean squared
-error per block. It also automatically reports the quality of the
-images, so there is no need to specify <b>-snr</b> then.
-
-<dt><b>-bit_rate_info</b> <i>rate_file</i>
-
-<dd> This option makes <b>ppmtompeg</b> write bit rate information
-into the file <i>rate_file</i>. Bit rate information is bits per frame, and
-also bits per I-frame-to-I-frame.
-
-<dt><b>-mv_histogram</b>
-
-<dd> This option causes <b>ppmtompeg</b> to print a histogram of the
-motion vectors as part of statistics. There are three histograms --
-one for P frame, one for forward B frame, and one for backward B frame
-motion vectors.
-
-<p>The output is in the form of a matrix, each entry corresponding to one
-motion vector in the search window. The center of the matrix
-represents (0,0) motion vectors.
-
-<dt><b>-debug_sockets</b>
-
-<dd>This option causes <b>ppmtompeg</b> to print to Standard Output
-messages that narrate the communication between the machines when you run
-<b>ppmtompeg</b> in <a href="#parallel">parallel mode</a>.
-
-<dt><b>-debug_machines</b>
-
-<dd>This option causes <b>ppmtompeg</b> to print to Standard Output
-messages that narrate the progress of the conversion on the various
-machines when you run <b>ppmtompeg</b> in <a href="#parallel">parallel
-mode</a>.
-
-</dl>
-
-<h2 id="parmfile">PARAMETER FILE</h2>
-
-<p>The parameter file <strong>must</strong> contain the following
-lines (except when using the <b>-combine_gops</b> or <b>-combine_frames</b>
-options):
-
-<dl compact>
-
-<dt><b>PATTERN</b> <i>pattern</i>
-
-<dd>This statement specifies the pattern (sequence) of I frames, P frames,
-and B frames. <i>pattern</i> is just a sequence of the letters I, P, and
-B with nothing between. Example:
-
-<pre>
- PATTERN IBBPBBPBBPBBPBB
-</pre>
-
-<p>See <a href="#ipb">I Frames, P Frames, B Frames</a>.
-
-<dt><b>OUTPUT</b> <i>output file</i>
-<dd>This names the file where the output MPEG stream goes.
-
-<dt><b>INPUT_DIR</b> <i>directory</i>
-
-<dd>This statement tells where the input images (frames) come from.
-If each frame is in a separate file, <i>directory</i> is the directory
-where they all are. You may use <b>.</b> to refer to the current
-directory. A null <i>directory</i> refers to the root directory of the
-system file tree.
-
-<p>To have <b>ppmtompeg</b> read all the frames serially from Standard
-Input, specify
-<pre>
- INPUT_DIR stdin
-</pre>
-
-<dt><b>INPUT</b>
-<dd>
-This line must be followed by a list of the input files (in display order)
-and then the line <b>END_INPUT</b>.
-
-<p>There are three types of lines between INPUT and END_INPUT. First,
-a line may simply be the name of an input file. Second, the line
-may be of the form <i>single_star_expr</i>
-<b>[</b><i>x</i><b>-</b><i>y</i><b>]</b>.
-<i>single_star_expr</i> can have a single <b>*</b> in it. It is
-replaced by all the numbers between x and y inclusive. So, for
-example, the line <b>tennis*.ppm [12-15]</b> refers to the files
-tennis12.ppm, tennis13.ppm, tennis14.ppm, tennis15.ppm.
-
-<p>Uniform zero-padding occurs, as well. For example, the line
-<b>football.*.ppm [001-130]</b> refers to the files football.001.ppm,
-football.002.ppm, ..., football.009.ppm, football.010.ppm, ...,
-football.130.ppm.
-
-<p>The third type of line is: <i>single_star_expr</i>
-<b>[</b><i>x</i><b>-</b><i>y</i><b>+</b><i>s</i><b>]</b>, where the
-line is treated exactly as above, except that we skip by <i>s</i>. Thus, the
-line <b>football.*.ppm [001-130+4]</b> refers to the files
-football.001.ppm, football.005.ppm, football.009.ppm,
-football.013.ppm, etc.
-
-<p>Furthermore, a line may specify a shell command to execute to
-generate lines to be interpreted as described above, as if those lines
-were in the parameter file instead. Use back ticks, like in the
-Bourne Shell, like this:
-
-<pre>
- `cat myfilelist`
-</pre>
-
-<p>
-If input is from Standard Input (per the <b>INPUT_DIR</b> statement),
-<b>ppmtompeg</b> ignores the <b>INPUT</b>/<b>END_INPUT</b> block, but
-it still must be present.
-
-<dt><b>BASE_FILE_FORMAT</b> {<b>PPM</b> | <b>PNM</b> | <b>YUV</b> |
- <b>JPEG</b> | <b>JMOVIE</b>}
-
-<dd><b>ppmtompeg</b> must convert all input files to one of the
-following formats as a first step of processing: PNM, YUV, JPEG(v4),
-or JMOVIE. (The conversion may be trivial if your input files are
-already in one of these formats). This line specifies which of the
-four formats. PPM is actually a subset of PNM. The separate
-specification is allowed for backward compatibility. Use PNM instead
-of PPM in new applications.
-
-<dt><b>INPUT_CONVERT</b> <i>conversion_command</i>
-
-<dd>You must specify how to convert a file to the base file format.
-If no conversion is necessary, then you would just say:
-
- <pre>
- INPUT_CONVERT *
- </pre>
-
-<p>Otherwise, <i>conversion_command</i> is a shell command that causes
-an image in the format your specified with <b>BASE_FILE_FORMAT</b> to
-be written to Standard Output. <b>ppmtompeg</b> executes the command
-once for each line between <b>INPUT</b> and <b>END_INPUT</b> (which is
-normally, but not necessarily, a file name). In the conversion
-command, <b>ppmtompeg</b> replaces each '*' with the contents of that
-line.
-
- If you had a bunch of gif files, you might say:
- <pre>
- INPUT_CONVERT giftopnm *
- </pre>
-
- If you have a bunch of separate a.Y, a.U, and a.V files (where
- the U and V have already been subsampled), then you might say:
-
- <pre>
- INPUT_CONVERT cat *.Y *.U *.V
- </pre>
-
-<p>Input conversion is not allowed with input from stdin, so use
-
- <pre>
- INPUT_CONVERT *
- </pre>
-
-as described above.
-
-<dt><b>SIZE</b> <i>width</i><b>x</b><i>height</i>
-
-<dd>
-
-<p><i>width</i> and <i>height</i> are the width and height of each
-frame in pixels.
-
-<p>When <b>ppmtompeg</b> can get this information from the input image
-files, it ignores the <b>SIZE</b> parameter and you may omit it.
-
-<p>When the image files are in YUV format, the files don't contain
-dimension information, so <b>SIZE</b> is required.
-
-<p>When <b>ppmtompeg</b> is running in parallel mode, not all of the
-processes in the network have access to the image files, so
-<b>SIZE</b> is required and must give the same dimensions as the
-input image files.
-
-<dt><b>YUV_SIZE</b> <i>width</i><b>x</b><i>height</i>
-
-<dd>This is an obsolete synonym of <b>SIZE</b>.
-
-<dt><b>YUV_FORMAT</b> {<b>ABEKAS</b> | <b>PHILLIPS</b> | <b>UCB</b> |
- <b>EYUV</b> | <i>pattern</i>}
-
-<dd>This is meaningful only when <b>BASE_FILE_FORMAT</b> specifies
-YUV format, and then it is required. It specifies the sub-format of
-the YUV class.
-
-
-<dt><b>GOP_SIZE</b> <i>n</i>
-
-<dd><i>n</i> is the number of frames in a Group of Pictures. Except that
-because a GOP must start with an I frame, <b>ppmtompeg</b> makes a GOP as
-much longer than <i>n</i> as it has to to make the next GOP start with an
-I frame.
-
-<p>Normally, it makes sense to make your GOP size a multiple of your
-pattern length (the latter is determined by the PATTERN parameter file
-statement).
-
-<p>See <a href="#gop">Group Of Pictures</a>.
-
-<dt><b>SLICES_PER_FRAME</b> <i>n</i>
-<dd><i>n</i> is roughly the number of slices per frame. Note, at
-least one MPEG player may complain if slices do not start at the left
-side of an image. To ensure this does not happen, make sure the
-number of rows is divisible by SLICES_PER_FRAME.
-
-<dt><b>PIXEL</b> {<b>FULL</b> | <b>HALF</b>}
-
-<dd>use half-pixel motion vectors, or just full-pixel ones It is
-usually important that you use half-pixel motion vectors, because it
-results in both better quality and better compression.
-
-
-<dt><b>RANGE</b> <i>n</i>
-<dd>Use a search range of <i>n</i> pixels in each of the four directions
-from a subject pixel. (So the search window is a square <i>n</i>*2 pixels
-on a side).
-
-<dt><b>PSEARCH_ALG</b> {<b>EXHAUSTIVE</b> | <b>TWOLEVEL</b> |
- <b>SUBSAMPLE</b> | <b>LOGARITHMIC</b>}
-
-<dd>This statement tells <b>ppmtompeg</b> what kind of search
- technique (algorithm) to use for P frames. You select the desired
- combination of speed and compression. <b>EXHAUSTIVE</b> gives the
- best compression, but <b>LOGARITHMIC</b> is the fastest.
- <b>TWOLEVEL</b> is an exhaustive full-pixel search, followed by a
- local half- pixel search around the best full-pixel vector (the
- PIXEL option is ignored for this search technique).
-
-<dt><b>BSEARCH_ALG</b> {<b>SIMPLE</b> | <b>CROSS2</b> | <b>EXHAUSTIVE</b>}
-
-<dd>This statement tells <b>ppmtompeg</b> what kind of search
- technique (algorithm) to use for B frames. <b>SIMPLE</b> means
- find best forward and backward vectors, then interpolate.
- <b>CROSS2</b> means find those two vectors, then see what backward
- vector best matches the best forward vector, and vice versa.
- <b>EXHAUSTIVE</b> does an n-squared search and is
- <em>extremely</em> slow in relation to the others (<b>CROSS2</b>
- is about half as fast as <b>SIMPLE</b>).
-
-<dt><b>IQSCALE</b> <i>n</i>
-<dd>Use <i>n</i> as the qscale for I frames.
- See <a href="#qscale">Qscale</a>.
-
-<dt><b>PQSCALE</b> <i>n</i>
-<dd>Use <i>n</i> as the qscale for P frames.
- See <a href="#qscale">Qscale</a>.
-
-<dt><b>BQSCALE</b> <i>n</i>
-<dd>Use <i>n</i> as the qscale for B frames.
- See <a href="#qscale">Qscale</a>.
-
-<dt><b>REFERENCE_FRAME</b> {<b>ORIGINAL</b> | <b>DECODED</b>} <dd>This
-statement determines whether <b>ppmtompeg</b> uses the original images
-or the decoded images when computing motion vectors. Using decoded
-images is more accurate and should increase the playback quality of
-the output, but it makes the encoding take longer and seems to give
-worse compression. It also causes some complications with parallel
-encoding. (see the section on parallel encoding). One thing you can
-do as a trade-off is select <b>ORIGINAL</b> here, and lower the
-qscale (see <b>QSCALE</b> if the quality is not good enough.
-
-<table border="1" cellpadding="5" cellspacing="0" >
- <caption>Original or Decoded? (Normalized)</caption>
-<?makeman r c c c c c. ?>
-<?makeman _ ?>
- <tr style="text-align:center; background-color:#CCCCCC">
- <th>Reference</th>
- <th>Compression</th>
- <th>Speed</th>
- <th>Quality I</th>
- <th>Quality P</th>
- <th>Quality B</th>
- </tr>
- <tr>
- <td style="text-align:right">Decoded</td>
- <td style="text-align:center">1000</td>
- <td style="text-align:center">1000</td>
- <td style="text-align:center">1000</td>
- <td style="text-align:center">969</td>
- <td style="text-align:center">919</td>
- </tr>
- <tr>
- <td style="text-align:right">Original</td>
- <td style="text-align:center">885</td>
- <td style="text-align:center">1373</td>
- <td style="text-align:center">1000</td>
- <td style="text-align:center">912</td>
- <td style="text-align:center">884</td>
- </tr>
- </table>
-
-
-
-</dl>
-
-<p>The following lines are optional:
-
-<dl>
-
-<dt><b>FORCE_ENCODE_LAST_FRAME</b>
-
-<dd>This statement is obsolete. It does nothing.
-
-<p>Before Netpbm 10.26 (January 2005), <b>ppmtompeg</b> would drop
-trailing B frames from your movie, since a movie can't end with a B
-frame. (See <a href="#ipb">I Frames, P Frames, B Frames</a>.)
-You would have to specify <b>FORCE_ENCODE_LAST_FRAME</b> to stop
-that from happening and get the same function that <b>ppmtompeg</b>
-has today.
-
-
-<dt><b>NIQTABLE</b>
-
-<dd>This statement specifies a custom non-intra quantization table.
-If you don't specify this statement, <b>ppmtompeg</b> uses a default
-non-intra quantization table.
-
-<p>
-The 8 lines immediately following <b>NIQTABLE</b> specify the quantization
-table. Each line defines a table row and consists of 8 integers,
-whitespace-delimited, which define the table columns.
-
-<dt><b>IQTABLE</b>
-
-<dd>This is analogous to NIQTABLE, but for the intra quantization table.
-
-<dt><b>ASPECT_RATIO</b> <i>ratio</i>
-
-<dd>This statement specifies the aspect ratio for <b>ppmtompeg</b> to
-specify in the MPEG output. I'm not sure what this is used for.
-
-<p><i>ratio</i> must be 1.0, 0.6735, 0.7031, 0.7615, 0.8055, 0.8437,
-0.8935, 0.9157, 0.9815, 1.0255, 1.0695, 1.0950, 1.1575, or 1.2015.
-
-<dt><b>FRAME_RATE</b> <i>rate</i>
-<dd>This specifies the frame rate for <b>ppmtompeg</b> to specify in the
-MPEG output. Some players use this value to determine the playback rate.
-
-<p><i>rate</i> must be 23.976, 24, 25, 29.97, 30, 50, 59.94, or 60.
-
-<dt><b>BIT_RATE</b> <i>rate</i>
-<dd>This specifies the bit rate for Constant Bit Rate (CBR) encoding.
-
-<p><i>rate</i> must be an integer.
-
-<dt><b>BUFFER_SIZE</b> <i>size</i>
-
-<dd>This specifies the value
-<b>ppmtompeg</b> is to specify in the MPEG output for the Video
-Buffering Verifier (VBV) buffer size needed to decode the sequence.
-
-<p>A Video Verifying Buffer is a buffer in which a decoder keeps the
-decoded bits in order to match the uneven speed of the decoding with
-the required constant playback speed.
-
-<p>As <b>ppmtompeg</b> encodes the image, it simulates the decoding
-process in terms of how many bits would be in the VBV as each frame gets
-decoded, assuming a VBV of the size you indicate.
-
-<p>If you specify the <b>WARN_VBV_UNDERFLOW</b> statement,
-<b>ppmtompeg</b> issues a warning each time the simulation underflows
-the buffer, which suggests that an underflow would occur on playback,
-which suggests the buffer is too small.
-
-<p>If you specify the <b>WARN_VBV_OVERFLOW</b> statement,
-<b>ppmtompeg</b> issues a warning each time the simulation overflows
-the buffer, which suggests that an overflow would occur on playback,
-which suggests the buffer is too small.
-
-<dt><b>WARN_VBV_UNDERFLOW</b>
-<dt><b>WARN_VBV_OVERFLOW</b>
-
-<dd>See <b>BUFFER_SIZE</b>.
-
-<p>These options were new in Netpbm 10.26 (January 2005). Before that,
-<b>ppmtompeg</b> issued the warnings always.
-
-</dl>
-
-
-The following statements apply only to parallel operation:
-
-<dl>
-
-<dt><b>PARALLEL</b>
-
-<dd>This statement, paired with <b>END PARALLEL</b>, is what causes
-<b>ppmtompeg</b> to operate in parallel mode. See <a
-href="#parallel">Parallel Operation</a>.
-
-<dt><b>END PARALLEL</b>
-
-<dd>This goes with <b>PARALLEL</b>.
-
-<dt><b>PARALLEL_TEST_FRAMES</b> <i>n</i>
-
-<dd>The master starts off by measuring each slave's speed. It does
-this by giving each slave <i>n</i> frames to encode and noting how
-long the slave takes to finish. These are not just test frames,
-though -- they're real frames and the results become part of the
-output.
-<b>ppmtompeg</b> is old and measures time in undivided seconds, so
-to get useful timings, specify enough frames that it will take at
-least 5 seconds to process them. The default is 10.
-
-<p>If you specify <b>FORCE_I_ALIGN</b>, <b>ppmtompeg</b> will increase
-the test frames value enough to maintain the alignment.
-
-<p>If there aren't enough frames for every slave to have the indicated
-number of test frames, <b>ppmtompeg</b> will give some slaves fewer.
-
-
-<dt><b>PARALLEL_TIME_CHUNKS</b> <i>t</i>
-
-<dd>When you specify this statement, the master attempts to feed work
-to the slaves in chunks that take <i>t</i> seconds to process. It uses
-the speed measurement it made when it started up (see PARALLEL_TEST_FRAMES)
-to decide how many frames to put in the chunk. This statement obviously
-doesn't affect the first batch of work sent to each slave, which is the
-one used to measure the slave's speed.
-
-<p>Smaller values of <i>t</i> increase communication, but improve load
-balancing. The default is 30 seconds.
-
-<p>You may specify only one of PARALLEL_TIME_CHUNKS, PARALLEL_CHUNK_TAPER,
-and PARALLEL_PERFECT. PARALLEL_CHUNK_TAPER is usually best.
-
-<dt><b>PARALLEL_CHUNK_TAPER</b>
-
-<dd>When you specify this statement, the master distributes work like
-with PARALLEL_TIME_CHUNKS, except that the master chooses the number
-of seconds for the chunks. It starts with a large number and, as it
-gets closer to finishing the job, reduces it. That way, it reduces
-scheduling overhead when precise scheduling isn't helpful, but still
-prevents a slave from finishing early after all the work has already
-been handed out to the other slaves, and then sitting idle while
-there's still work to do.
-
-<p>You may specify only one of PARALLEL_TIME_CHUNKS, PARALLEL_CHUNK_TAPER,
-and PARALLEL_PERFECT. PARALLEL_CHUNK_TAPER is usually best.
-
-
-<dt><b>PARALLEL_PERFECT</b>
-
-<dd>If this statement is present, <b>ppmtompeg</b> schedules on the
-assumption that each machine is about the same speed. The master will
-simply divide up the frames evenly between the slaves -- each
-slave gets the same number of frames. If some slaves are faster than
-others, they will finish first and remain idle while the slower slaves
-continue.
-
-<p>This has the advantage of minimal scheduling overhead. Where slaves
-have different speeds, though, it makes inefficient use of the fast
-ones. Where slaves are the same speed, it also has the disadvantage
-that they all finish at the same time and feed their output to the
-single Combine Server in a burst, which makes less efficient use of
-the Combine Server and thus can increase the total elapsed time.
-
-<p>You may specify only one of PARALLEL_TIME_CHUNKS, PARALLEL_CHUNK_TAPER,
-and PARALLEL_PERFECT. PARALLEL_CHUNK_TAPER is usually best.
-
-<dt><b>RSH</b> <i>remote_shell_command</i>
-
-<dd><b>ppmtompeg</b> executes the shell command
-<i>remote_shell_command</i> to start a process on another machine.
-The default command is <b>rsh</b>, and whatever command you specify
-must have compatible semantics. <b>ssh</b> is usually compatible.
-The command <b>ppmtompeg</b> uses is one like this:
-<b>ssh remote.host.com -l username shellcommand</b>.
-
-<p>Be sure to set up <b>.rhosts</b> files or SSH key authorizations
-where needed. Otherwise, you'll have to type in passwords.
-
-<p>On some HP machines, <b>rsh</b> is the restricted shell, and you want
-to specify <b>remsh</b>.
-
-<dt><b>FORCE_I_ALIGN</b>
-
-<dd>This statement forces each slave to encode a chunk of frames which
-is a multiple of the pattern length (see <b>PATTERN</b>). Since the
-first frame in any pattern is an I frame, this forces each chunk
-encoded by a slave to begin with an I frame.
-
-<p>This document used to say there was an argument to
-<b>FORCE_I_ALIGN</b> which was the number of frames <b>ppmtompeg</b>
-would use (and was required to be a multiple of the pattern length).
-But <b>ppmtompeg</b> has apparently always ignored that argument, and
-it does now.
-
-<dt><b>KEEP_TEMP_FILES</b>
-
-<dd>This statement causes <b>ppmtompeg</b> not to delete the temporary
-files it uses to transmit encoded frames to the combine server. This
-means you will be left with a file for each frame, the same as you
-would get with the <b>-frames</b> option.
-
-<p>This is mostly useful for debugging.
-
-<p>This works only if you're using a shared filesystem to communicate
-between the servers.
-
-<p>This option was new in Netpbm 10.26 (January 2005).
-
-</dl>
-
-
-<h3 id="parameterfile">Parameter File Notes</h3>
-
-<p> If you use the <b>-combine_gops</b> option, then you need to specify
-only the SIZE and OUTPUT values in the parameter file. In
-addition, the parameter file may specify input GOP files in the same
-manner as normal input files -- except instead of using INPUT_DIR,
-INPUT, and END_INPUT, use GOP_INPUT_DIR, GOP_INPUT, and GOP_END_INPUT.
-If you specify no input GOP files, then <b>ppmtompeg</b> uses by default the
-output file name with suffix <b>.gop.</b><i>gop_num</i>, with <i>gop_num</i>
-starting from 0, as the input files.
-
-<p>If you use the <b>-combine_frames</b> option, then you need to
-specify only the SIZE, GOP_SIZE, and OUTPUT values in the
-parameter file. In addition, the parameter file may specify input
-frame files in the same manner as normal input files -- except instead
-of using INPUT_DIR, INPUT, and END_INPUT, use FRAME_INPUT_DIR,
-FRAME_INPUT, and FRAME_END_INPUT. If no input frame files are
-specified, then the default is to use the output file name with suffix
-<b>.frame.</b><i>frame_num</i>, with <i>frame_num</i> starting from 0,
-as the input files.
-
-<p>Any number of spaces and tabs may come between each option and value. Lines
-beginning with <b>#</b> are ignored. Any other lines are ignored except for
-those between INPUT and END_INPUT. This allows you to use the same
-parameter file for normal usage and for <b>-combine_gops</b> and
-<b>-combine_frames</b>.
-
-<p>The file format is case-sensitive so all keywords should be in
-upper case.
-
-<p>The statements may appear in any order, except that the order within
-a block statement (such as INPUT ... END INPUT) is significant.
-
-<p><b>ppmtompeg</b> is prepared to handle up to 16 B frames between
-reference frames when encoding with input from stdin. (To build a
-modified <b>ppmtompeg</b> with a higher limit, change the constant
-B_FRAME_RUN in frame.c and recompile).
-
-<h2 id="general">GENERAL USAGE INFORMATION</h2>
-
-<h3 id="qscale">Qscale</h3>
-
-<p>The quantization scale values (qscale) give a trade-off between
-quality and compression. Using different Qscale values has very little
-effect on speed. The qscale values can be set separately for I, P, and
-B frames.
-
-<p>You select the qscale values with the <b>IQSCALE</b>,
-<b>PQSCALE</b>, and <b>BSCALE</b> parameter file statements.
-
-<p>A qscale value is an integer from 1 to 31. Larger numbers give
-better compression, but worse quality. In the following, the quality
-numbers are peak signal-to-noise ratio, defined as:
-<img src="ppmtompeg-snr.gif" alt="signal-to-noise formula" height="52" width="302">
-where MSE is the mean squared error.
-
-
-<p>Flower garden tests:
-
-<table border="1" cellpadding="5" cellspacing="0">
- <caption>Qscale vs Quality</caption>
-<?makeman r r r r. ?>
-<?makeman _ ?>
- <tr style="text-align:center">
- <th>Qscale</th>
- <th>I Frames</th>
- <th>P Frames</th>
- <th>B Frames</th>
- </tr>
- <tr>
- <td style="text-align:right">1</td>
- <td style="text-align:right">43.2</td>
- <td style="text-align:right">46.3</td>
- <td style="text-align:right">46.5</td>
- </tr>
- <tr>
- <td style="text-align:right">6</td>
- <td style="text-align:right">32.6</td>
- <td style="text-align:right">34.6</td>
- <td style="text-align:right">34.3</td>
- </tr>
- <tr>
- <td style="text-align:right">11</td>
- <td style="text-align:right">28.6</td>
- <td style="text-align:right">29.5</td>
- <td style="text-align:right">30.0</td>
- </tr>
- <tr>
- <td style="text-align:right">16</td>
- <td style="text-align:right">26.3</td>
- <td style="text-align:right">26.8</td>
- <td style="text-align:right">28.6</td>
- </tr>
- <tr>
- <td style="text-align:right">21</td>
- <td style="text-align:right">24.7</td>
- <td style="text-align:right">25.0</td>
- <td style="text-align:right">27.9</td>
- </tr>
- <tr>
- <td style="text-align:right">26</td>
- <td style="text-align:right">23.5</td>
- <td style="text-align:right">23.9</td>
- <td style="text-align:right">27.5</td>
- </tr>
- <tr>
- <td style="text-align:right">31</td>
- <td style="text-align:right">22.6</td>
- <td style="text-align:right">23.0</td>
- <td style="text-align:right">27.3</td>
- </tr>
-</table>
-
-<table border="1" cellpadding="5" cellspacing="0">
- <caption>Qscale vs Compression</caption>
-<?makeman r r r r. ?>
-<?makeman _ ?>
- <tr style="text-align:center">
- <th>Qscale</th>
- <th>I Frames</th>
- <th>P Frames</th>
- <th>B Frames</th>
- </tr>
- <tr>
- <td style="text-align:right">1</td>
- <td style="text-align:right">2</td>
- <td style="text-align:right">2</td>
- <td style="text-align:right">2</td>
- </tr>
- <tr>
- <td style="text-align:right">6</td>
- <td style="text-align:right">7</td>
- <td style="text-align:right">10</td>
- <td style="text-align:right">15</td>
- </tr>
- <tr>
- <td style="text-align:right">11</td>
- <td style="text-align:right">11</td>
- <td style="text-align:right">18</td>
- <td style="text-align:right">43</td>
- </tr>
- <tr>
- <td style="text-align:right">16</td>
- <td style="text-align:right">15</td>
- <td style="text-align:right">29</td>
- <td style="text-align:right">97</td>
- </tr>
- <tr>
- <td style="text-align:right">21</td>
- <td style="text-align:right">19</td>
- <td style="text-align:right">41</td>
- <td style="text-align:right">173</td>
- </tr>
- <tr>
- <td style="text-align:right">26</td>
- <td style="text-align:right">24</td>
- <td style="text-align:right">56</td>
- <td style="text-align:right">256</td>
- </tr>
- <tr>
- <td style="text-align:right">31</td>
- <td style="text-align:right">28</td>
- <td style="text-align:right">73</td>
- <td style="text-align:right">330</td>
- </tr>
-</table>
-
-
-<h3 id="searchtech">Search Techniques</h3>
-
-<p>There are several different motion vector search techniques
-available. There are different techniques available for P frame
-search and B frame search. Using different search techniques present
-little difference in quality, but a large difference in compression
-and speed.
-
-<p>There are 4 types of P frame search: Exhaustive, TwoLevel,
-SubSample, and Logarithmic.
-
-<p>There are 3 types of B frame search: Exhaustive, Cross2, and
-Simple.
-
-The recommended search techniques are TwoLevel and Logarithmic for
-P frame search, and Cross2 and Simple for B frame search. Here are
-some numbers comparing the different search methods:
-
-<table border="1" cellpadding="5" cellspacing="0">
- <caption>P frame Motion Vector Search (Normalized)</caption>
-<?makeman r c c c. ?>
-<?makeman _ ?>
- <tr style="text-align:center">
- <th>Technique</th>
- <th>Compression<a href="#smallbetter"><sup>1</sup></a></th>
- <th>Speed <a href="#largefaster"><sup>2</sup></a></th>
- <th>Quality <a href="#largebetter"><sup>3</sup></a></th>
- </tr>
- <tr>
- <td style="text-align:right">Exhaustive</td>
- <td style="text-align:center">1000</td>
- <td style="text-align:center">1000</td>
- <td style="text-align:center">1000</td>
- </tr>
- <tr>
- <td style="text-align:right">SubSample</td>
- <td style="text-align:center">1008</td>
- <td style="text-align:center">2456</td>
- <td style="text-align:center">1000</td>
- </tr>
- <tr>
- <td style="text-align:right">TwoLevel</td>
- <td style="text-align:center">1009</td>
- <td style="text-align:center">3237</td>
- <td style="text-align:center">1000</td>
- </tr>
- <tr>
- <td style="text-align:right">Logarithmic</td>
- <td style="text-align:center">1085</td>
- <td style="text-align:center">8229</td>
- <td style="text-align:center">998</td>
- </tr>
-</table>
-
-<table border="1" cellpadding="5" cellspacing="0">
- <caption>B frame Motion Vector Search (Normalized)</caption>
-<?makeman r c c c. ?>
-<?makeman _ ?>
- <tr style="text-align:center">
- <th>Technique</th>
- <th>Compression<a href="#smallbetter"><sup>1</sup></a></th>
- <th>Speed<a href="#largefaster"><sup>2</sup></a></th>
- <th>Quality<a href="#largebetter"><sup>3</sup></a></th>
- </tr>
- <tr>
- <td style="text-align:right">Exhaustive</td>
- <td style="text-align:center">1000</td>
- <td style="text-align:center">1000</td>
- <td style="text-align:center">1000</td>
- </tr>
- <tr>
- <td style="text-align:right">Cross2</td>
- <td style="text-align:center">975</td>
- <td style="text-align:center">1000</td>
- <td style="text-align:center">996</td>
- </tr>
- <tr>
- <td style="text-align:right">Simple</td>
- <td style="text-align:center">938</td>
- <td style="text-align:center">1765</td>
- <td style="text-align:center">991</td>
- </tr>
-</table>
-
-<a name="smallbetter">&nbsp;</a><sup>1</sup>Smaller numbers are better
-compression.
-
-<a name="largefaster">&nbsp;</a><sup>2</sup>Larger numbers mean faster
-execution.
-
-<a name="largebetter">&nbsp;</a><sup>3</sup>Larger numbers mean better quality.
-
-<p>For some reason, Simple seems to give better compression, but it
-depends on the image sequence.
-
-<p>Select the search techniques with the <b>PSEARCH_ALG</b> and
-<b>BSEARCH_ALG</b> parameter file statements.
-
-
-<h3 id="gop">Group Of Pictures (GOP)</h3>
-
-<p>A Group of Pictures (GOP) is a roughly independently decodable
-sequence of frames. An MPEG video stream is made of one or more
-GOP's. You may specify how many frames should be in each GOP with the
-<b>GOP_SIZE</b> parameter file statement. A GOP always starts with an
-I frame.
-
-<p>Instead of encoding an entire sequence, you can encode a single
-GOP. To do this, use the <b>-gop</b> command option. You can later
-join the resulting GOP files at any time by running <b>ppmtompeg</b>
-with the <b>-combine_gops</b> command option.
-
-
-<h3 id="slices">Slices</h3>
-
-<p>A slice is an independently decodable unit in a frame. It can be
-as small as one macroblock, or it can be as big as the entire frame.
-Barring transmission error, adding slices does not change quality or
-speed; the only effect is slightly worse compression. More slices are
-used for noisy transmission so that errors are more recoverable. Since
-usually errors are not such a problem, we usually just use one slice
-per frame.
-
-<p>Control the slice size with the <b>SLICES_PER_FRAME</b> parameter
-file statement.
-
-<p>Some MPEG playback systems require that each slice consist of whole
-rows of macroblocks. If you are encoding for this kind of player, if
-the height of the image is H pixels, then you should set the
-SLICES_PER_FRAME to some number which divides H/16. For example, if
-the image is 240 pixels (15 macroblocks) high, then you should use
-only 15, 5, 3, or 1 slices per frame.
-
-<p>Note: these MPEG playback systems are really wrong, since the MPEG
-standard says this doesn't have to be so.
-
-
-
-<h3 id="searchwindow">Search Window</h3>
-
-<p>The search window is the window in which <b>ppmtompeg</b> searches
-for motion vectors. The window is a square. You can specify the size
-of the square, and whether to allow half-pixel motion vectors or not,
-with the <b>RANGE</b> and <b>PIXEL</b> parameter file statements.
-
-<h3 id="ipb">I Frames, P Frames, B Frames</h3>
-
-<p>In MPEG-1, a movie is represented as a sequence of MPEG frames,
-each of which is an I Frame, a P Frame, or a B Frame. Each represents
-an actual frame of the movie (don't get confused by the dual use of
-the word "frame." A movie frame is a graphical image. An MPEG frame
-is a set of data that describes a movie frame).
-
-<p>An I frame ("intra" frame) describes a movie frame in isolation --
-without respect to any other frame in the movie. A P frame
-("predictive" frame) describes a movie frame by describing how it
-differs from the movie frame described by the latest preceding I or
-P frame. A B frame ("bidirectional" frame) describes a movie frame by
-describing how it differs from the movie frames described by the
-nearest I or P frame before <em>and</em> after it.
-
-<p>Note that the first frame of a movie must be described by an I
-frame (because there is no previous movie frame) and the last movie
-frame must be described by an I or P frame (because there is no
-subsequent movie frame).
-
-<p>Beyond that, you can choose which frames are represented by which
-types. You specify a pattern, such as IBPBP and <b>ppmtompeg</b>
-simply repeats it over and over throughout the movie. The pattern
-affects speed, quality, and stream size. Here is a chart which shows
-some of the trade-offs:
-
-<table border="1" cellpadding="5" cellspacing="0">
- <caption>Comparison of I/P/B Frames (Normalized)</caption>
-<?makeman r c c c. ?>
-<?makeman _ ?>
- <tr style="text-align:center">
- <th>Frame Type</th>
- <th>Size</th>
- <th>Speed</th>
- <th>Quality</th>
- </tr>
- <tr>
- <td style="text-align:right">I frames</td>
- <td style="text-align:center">1000</td>
- <td style="text-align:center">1000</td>
- <td style="text-align:center">1000</td>
- </tr>
- <tr>
- <td style="text-align:right">P frames</td>
- <td style="text-align:center">409</td>
- <td style="text-align:center">609</td>
- <td style="text-align:center">969</td>
- </tr>
- <tr>
- <td style="text-align:right">B frames</td>
- <td style="text-align:center">72</td>
- <td style="text-align:center">260</td>
- <td style="text-align:center">919</td>
- </tr>
- </table>
-
-(this is with constant qscale)
-
-<p>A standard sequence is IBBPBBPBBPBBPBB.
-
-<p>Select the sequence with the <b>PATTERN</b> parameter file statement.
-
-<p>Since the last MPEG frame cannot be a B frame (see above), if the
-pattern you specify indicates a B frame for the last movie frame of
-the movie, <b>ppmtompeg</b> makes it an I frame instead.
-
-<p>Before Netpbm 10.26 (January 2005), <b>ppmtompeg</b> instead drops
-the trailing B frames by default, and you need the
-<b>FORCE_ENCODE_LAST_FRAME</b> parameter file statement to make it do
-this.
-
-<p>The MPEG frames don't appear in the MPEG-1 stream in the same order that
-the corresponding movie frames appear in the movie -- the B frames come after
-the I and P frames on which they are based. For example, if the movie is
-4 frames that you will represent with the pattern IBBP, the MPEG-1 stream
-will start with an I frame describing movie frame 0. The next frame in
-the MPEG-1 stream is a P frame describing movie frame 3. The last two
-frames in the MPEG-1 stream are B frames describing movie frames 1 and 2,
-respectively.
-
-
-<h3 id="iofiles">Specifying Input and Output Files</h3>
-
-<p>Specify the input frame images with the <b>INPUT_DIR</b>,
-<b>INPUT</b>, <b>END_INPUT</b>, <b>BASE_FILE_FORMAT</b>,
-<b>SIZE</b>, <b>YUV_FORMAT</b> and <b>INPUT_CONVERT</b> parameter
-file statements.
-
-<p>Specify the output file with the <b>OUTPUT</b> parameter file statement.
-
-
-<h3 id="statistics">Statistics</h3>
-
-<p><b>ppmtompeg</b> can generate a variety of statistics about the
-encoding. See the <b>-stat</b>, <b>-snr</b>, <b>-mv_histogram</b>,
-<b>-quiet</b>, <b>-no_frame_summary</b>, and <b>-bit_rate_info</b>
-options.
-
-
-<h2 id="parallel">PARALLEL OPERATION</h2>
-
-<p>You can run <b>ppmtompeg</b> on multiple machines at once, encoding
-the same MPEG stream. When you do, the machines are used as shown in
-the following diagram. We call this "parallel mode."
-
-<p><img src="ppmtompeg-par.gif" alt="ppmtompeg-par.gif">
-
-<p>To do parallel processing, put the statement
-
-<pre>
- PARALLEL
-</pre>
-
-in the parameter file, followed by a listing of the machines, one
-machine per line, then
-
-<pre>
- END_PARALLEL
-</pre>
-
-Each of the machine lines must be in one of two forms. If the machine
-has filesystem access to the input files, then the line is:
-
-<p>
-<i>machine</i> <i>user</i> <i>executable</i>
-
-<p>The executable is normally <b>ppmtompeg</b> (you may need to give
-the complete path if you've built for different architectures). If
-the machine does not have filesystem access to the input files, the line
-is:
-
-<p><b>REMOTE</b> <i>machine</i> <i>user</i> <i>executable</i>
-<i>parameter file</i>
-
-<p>The <b>-max_machines</b> command option limits the number of
-machines <b>ppmtompeg</b> will use. If you specify more machines in
-the parameter file than <b>-max_machines</b> allows, <b>ppmtompeg</b>
-uses only the machines listed first. This is handy if you want to
-experiment with different amounts of parallelism.
-
-<p>In general, you should use full path file names when describing
-executables and parameter files. This <em>includes</em> the parameter
-file argument on the original invocation of <b>ppmtompeg</b>.
-
-<p>All file names must be the same on all systems (so if e.g. you're
-using an NFS filesystem, you must make sure it is mounted at the same
-mountpoint on all systems).
-
-<p>Because not all of the processes involved in parallel operation
-have easy access to the input files, you must specify the <b>SIZE</b>
-parameter file statement when you do parallel operation.
-
-<p>The machine on which you originally invoke <b>ppmtompeg</b> is the
-master machine. It hosts a "combine server,", a
-"decode server," and a number of "i/o servers,"
-all as separate processes. The other machines in the network (listed
-in the parameter file) are slave machines. Each hosts a single
-process that continuously requests work from the master and does it.
-The slave process does the computation to encode MPEG frames. It
-processes frames in batches identified by the master.
-
-<p>The master uses a remote shell command to start a process on a
-slave machine. By default, it uses an <b>rsh</b> shell command to do
-this. But use the <b>RSH</b> parameter file statement to control
-this. The shell command the master executes remotely is
-<b>ppmtompeg</b>, but with options to indicate that it is to perform
-slave functions.
-
-<p>The various machines talk to each other over TCP connections. Each
-machine finds and binds to a free TCP port number and tells its
-partners the port number. These port numbers are at least 2048.
-
-<p>Use the PARALLEL_TEST_FRAMES, PARALLEL_TIME_CHUNKS, and
-PARALLEL_PERFECT parameter file statements to control the way the
-master divides up work among the slaves.
-
-<p>Use the <b>-nice</b> command option to cause all slave processes to run
-"nicely," i.e. as low priority processes. That way, this substantial and
-long-running CPU load will have minimal impact on other, possibly
-interactive, users of the systems.
-
-<h2 id="speed">SPEED</h2>
-
-<p>Here is a look at <b>ppmtompeg</b> speed, in single-node (not parallel)
-operation:
-
-<table border="1" cellpadding="5" cellspacing="0">
- <caption>Compression Speed</caption>
-<?makeman r c. ?>
-<?makeman _ ?>
- <tr style="text-align:center">
- <th>Machine Type</th>
- <th>Macroblocks per second<sup>1</sup></th>
- </tr>
- <tr>
- <td style="text-align:right">HP 9000/755</td>
- <td style="text-align:center">280</td>
- </tr>
- <tr>
- <td style="text-align:right">DEC 3000/400</td>
- <td style="text-align:center">247</td>
- </tr>
- <tr>
- <td style="text-align:right">HP 9000/750</td>
- <td style="text-align:center">191</td>
- </tr>
- <tr>
- <td style="text-align:right">Sparc 10</td>
- <td style="text-align:center">104</td>
- </tr>
- <tr>
- <td style="text-align:right">DEC 5000</td>
- <td style="text-align:center">68</td>
- </tr>
-</table>
-<sup>1</sup>A macroblock is a 16x16 pixel square
-
-<p>The measurements in the table are with inputs and outputs via a
-conventional locally attached filesystem. If you are using a network
-filesystem over a single 10 MB/s Ethernet, that constrains your speed more
-than your CPU speed. In that case, don't expect to get better than 4
-or 5 frames per second no matter how fast your CPUs are.
-
-<p>Network speed is even more of a bottleneck when the slaves do not
-have filesystem access to the input files -- i.e. you declare them
-REMOTE.
-
-<p>Where I/O is the bottleneck, size of the input frames can make a big
-difference. So YUV input is better than PPM, and JPEG is better than
-both.
-
-<p>When you're first trying to get parallel mode working, be sure to
-use the <b>-debug_machines</b> option so you can see what's going on.
-Also, <b>-debug_sockets</b> can help you diagnose communication
-problems.
-
-
-<h2 id="authors">AUTHORS</h2>
-
-<ul>
-
-<li>Kevin Gong - University of California, Berkeley, <a
-href="mailto:keving@cs.berkeley.edu">keving@cs.berkeley.edu</a>
-
-<li>Ketan Patel - University of California, Berkeley, <a
-href="mailto:kpatel@cs.berkeley.edu">kpatel@cs.berkeley.edu</a>
-
-<li>Dan Wallach - University of California, Berkeley, <a
-href="mailto:dwallach@cs.berkeley.edu">dwallach@cs.berkeley.edu</a>
-
-<li>Darryl Brown - University of California, Berkeley, <a
-href="mailto:darryl@cs.berkeley.edu">darryl@cs.berkeley.edu</a>
-
-<li>Eugene Hung - University of California, Berkeley, <a
-href="mailto:eyhung@cs.berkeley.edu">eyhung@cs.berkeley.edu</a>
-
-<li>Steve Smoot - University of California, Berkeley, <a
-href="mailto:smoot@cs.berkeley.edu">smoot@cs.berkeley.edu</a>
-
-</ul>
-
-<hr>
-<h2 id="index">Table Of Contents</h2>
-<ul>
-<li><a href="#synopsis">SYNOPSIS</a>
-<li><a href="#description">DESCRIPTION</a>
-<li><a href="#options">OPTIONS</a>
-<li><a href="#parmfile">PARAMETER FILE</a>
- <ul>
- <li><a href="#parameterfile">Parameter File Notes</a>
- </ul>
-<li><a href="#general">GENERAL USAGE INFORMATION</a>
- <ul>
- <li><a href="#qscale">Qscale</a>
- <li><a href="#searchtech">Search Techniques</a>
- <li><a href="#gop">Group Of Pictures (GOP)</a>
- <li><a href="#slices">Slices</a>
- <li><a href="#searchwindow">Search Window</a>
- <li><a href="#ipb">I Frames, P Frames, B Frames</a>
- <li><a href="#iofiles">Specifying Input and Output Files </a>
- <li><a href="#statistics">Statistics</a>
- </ul>
-<li><a href="#parallel">PARALLEL OPERATION</a>
-<li><a href="#speed">SPEED</a>
-<li><a href="#authors">AUTHORS</a>
-</ul>
-</body>
-</html>
Binární soubory a/userguide/.pamgradient.html.swp a b/userguide/.pamgradient.html.swp jsou rozdílné
diff -urNp a/userguide/pamhomography.html b/userguide/pamhomography.html
--- a/userguide/pamhomography.html 2021-06-02 21:32:17.861061500 +0200
+++ b/userguide/pamhomography.html 2021-06-02 21:43:06.846140198 +0200
@@ -1,15 +1,7 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.3//EN">
-<html xmlns="http://www.w3.org/1999/xhtml">
-<head>
-<title>pamhomography</title>
-<meta http-equiv="content-type" content="text/html; charset=utf-8" />
-<script type="text/javascript" src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
-<script type="text/javascript" id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
-</head>
-
+<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Pamhomography User Manual</title></head>
<body>
-
-<h1 id="pamhomography">pamhomography</h1>
+<h1>pamhomography</h1>
Updated: 03 January 2021
<br>
@@ -17,8 +9,7 @@ Updated: 03 January 2021
<h2>NAME</h2>
-
-<p>pamhomography - map one arbitrary quadrilateral image region to another</p>
+pamhomography - map one arbitrary quadrilateral image region to another
<h2 id="SYNOPSIS">SYNOPSIS</h2>
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