91 lines
3.4 KiB
HTML
91 lines
3.4 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
|
<html>
|
|
<!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ -->
|
|
<head>
|
|
<meta charset="utf-8">
|
|
<title>
|
|
Libswscale Documentation
|
|
</title>
|
|
<meta name="viewport" content="width=device-width,initial-scale=1.0">
|
|
<link rel="stylesheet" type="text/css" href="bootstrap.min.css">
|
|
<link rel="stylesheet" type="text/css" href="style.min.css">
|
|
</head>
|
|
<body>
|
|
<div class="container">
|
|
<h1>
|
|
Libswscale Documentation
|
|
</h1>
|
|
<div align="center">
|
|
</div>
|
|
|
|
|
|
<a name="SEC_Top"></a>
|
|
|
|
<a name="SEC_Contents"></a>
|
|
<h2 class="contents-heading">Table of Contents</h2>
|
|
|
|
<div class="contents">
|
|
|
|
<ul class="no-bullet">
|
|
<li><a name="toc-Description" href="#Description">1 Description</a></li>
|
|
<li><a name="toc-See-Also" href="#See-Also">2 See Also</a></li>
|
|
<li><a name="toc-Authors" href="#Authors">3 Authors</a></li>
|
|
</ul>
|
|
</div>
|
|
|
|
|
|
<a name="Description"></a>
|
|
<h2 class="chapter">1 Description<span class="pull-right"><a class="anchor hidden-xs" href="#Description" aria-hidden="true">#</a> <a class="anchor hidden-xs"href="#toc-Description" aria-hidden="true">TOC</a></span></h2>
|
|
|
|
<p>The libswscale library performs highly optimized image scaling and
|
|
colorspace and pixel format conversion operations.
|
|
</p>
|
|
<p>Specifically, this library performs the following conversions:
|
|
</p>
|
|
<ul>
|
|
<li> <em>Rescaling</em>: is the process of changing the video size. Several
|
|
rescaling options and algorithms are available. This is usually a
|
|
lossy process.
|
|
|
|
</li><li> <em>Pixel format conversion</em>: is the process of converting the image
|
|
format and colorspace of the image, for example from planar YUV420P to
|
|
RGB24 packed. It also handles packing conversion, that is converts
|
|
from packed layout (all pixels belonging to distinct planes
|
|
interleaved in the same buffer), to planar layout (all samples
|
|
belonging to the same plane stored in a dedicated buffer or "plane").
|
|
|
|
<p>This is usually a lossy process in case the source and destination
|
|
colorspaces differ.
|
|
</p></li></ul>
|
|
|
|
|
|
<a name="See-Also"></a>
|
|
<h2 class="chapter">2 See Also<span class="pull-right"><a class="anchor hidden-xs" href="#See-Also" aria-hidden="true">#</a> <a class="anchor hidden-xs"href="#toc-See-Also" aria-hidden="true">TOC</a></span></h2>
|
|
|
|
<p><a href="ffmpeg.html">ffmpeg</a>, <a href="ffplay.html">ffplay</a>, <a href="ffprobe.html">ffprobe</a>, <a href="ffserver.html">ffserver</a>,
|
|
<a href="ffmpeg-scaler.html">ffmpeg-scaler</a>,
|
|
<a href="libavutil.html">libavutil</a>
|
|
</p>
|
|
|
|
<a name="Authors"></a>
|
|
<h2 class="chapter">3 Authors<span class="pull-right"><a class="anchor hidden-xs" href="#Authors" aria-hidden="true">#</a> <a class="anchor hidden-xs"href="#toc-Authors" aria-hidden="true">TOC</a></span></h2>
|
|
|
|
<p>The FFmpeg developers.
|
|
</p>
|
|
<p>For details about the authorship, see the Git history of the project
|
|
(git://source.ffmpeg.org/ffmpeg), e.g. by typing the command
|
|
<code>git log</code> in the FFmpeg source directory, or browsing the
|
|
online repository at <a href="http://source.ffmpeg.org">http://source.ffmpeg.org</a>.
|
|
</p>
|
|
<p>Maintainers for the specific components are listed in the file
|
|
<samp>MAINTAINERS</samp> in the source code tree.
|
|
</p>
|
|
|
|
|
|
<p style="font-size: small;">
|
|
This document was generated using <a href="http://www.gnu.org/software/texinfo/"><em>makeinfo</em></a>.
|
|
</p>
|
|
</div>
|
|
</body>
|
|
</html>
|