source: multimedia/videoutils/ffmpeg.xml@ 4fc7386

10.0 10.1 11.0 7.10 7.4 7.5 7.6 7.6-blfs 7.6-systemd 7.7 7.8 7.9 8.0 8.1 8.2 8.3 8.4 9.0 9.1 basic bdubbs/svn elogind gnome kde5-13430 kde5-14269 kde5-14686 ken/refactor-virt krejzi/svn lazarus nosym perl-modules qt5new systemd-11177 systemd-13485 trunk upgradedb xry111/git-date xry111/git-date-for-trunk xry111/git-date-test
Last change on this file since 4fc7386 was 4fc7386, checked in by Igor Živković <igor@…>, 9 years ago

Revert FFmpeg update

git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@11407 af4574ff-66df-0310-9fd7-8a98e5e911e0

  • Property mode set to 100644
File size: 22.6 KB
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1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3 "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
4 <!ENTITY % general-entities SYSTEM "../../general.ent">
5 %general-entities;
6
7 <!ENTITY ffmpeg-download-http
8 "http://ffmpeg.org/releases/ffmpeg-&ffmpeg-version;.tar.bz2">
9 <!ENTITY ffmpeg-download-ftp " ">
10 <!ENTITY ffmpeg-md5sum "5071a26cc149f380908ce79ec2a677ef">
11 <!ENTITY ffmpeg-size "5.7 MB">
12 <!ENTITY ffmpeg-buildsize "100 MB">
13 <!ENTITY ffmpeg-time "4.0 SBU">
14]>
15
16<sect1 id="ffmpeg" xreflabel="FFmpeg-&ffmpeg-version;">
17 <?dbhtml filename="ffmpeg.html"?>
18
19 <sect1info>
20 <othername>$LastChangedBy$</othername>
21 <date>$Date$</date>
22 </sect1info>
23
24 <title>FFmpeg-&ffmpeg-version;</title>
25
26 <indexterm zone="ffmpeg">
27 <primary sortas="a-FFmpeg">FFmpeg</primary>
28 </indexterm>
29
30 <sect2 role="package">
31 <title>Introduction to FFmpeg</title>
32
33 <para>
34 <application>FFmpeg</application> is a solution to record, convert and
35 stream audio and video. It is a very fast video and audio converter and it
36 can also acquire from a live audio/video source. Designed to be intuitive,
37 the command-line interface (<command>ffmpeg</command>) tries to figure out
38 all the parameters, when possible. <application>FFmpeg</application> can
39 also convert from any sample rate to any other, and resize video on the
40 fly with a high quality polyphase filter.
41 <application>FFmpeg</application> can use a Video4Linux compatible video
42 source and any Open Sound System audio source.
43 </para>
44
45 &lfs73_checked;
46
47 <bridgehead renderas="sect3">Package Information</bridgehead>
48 <itemizedlist spacing="compact">
49 <listitem>
50 <para>
51 Download (HTTP): <ulink url="&ffmpeg-download-http;"/>
52 </para>
53 </listitem>
54 <listitem>
55 <para>
56 Download (FTP): <ulink url="&ffmpeg-download-ftp;"/>
57 </para>
58 </listitem>
59 <listitem>
60 <para>
61 Download MD5 sum: &ffmpeg-md5sum;
62 </para>
63 </listitem>
64 <listitem>
65 <para>
66 Download size: &ffmpeg-size;
67 </para>
68 </listitem>
69 <listitem>
70 <para>
71 Estimated disk space required: &ffmpeg-buildsize;
72 </para>
73 </listitem>
74 <listitem>
75 <para>
76 Estimated build time: &ffmpeg-time;
77 </para>
78 </listitem>
79 </itemizedlist>
80
81 <bridgehead renderas="sect3">FFmpeg Dependencies</bridgehead>
82
83 <!-- All dependencies are listed in the order as they are displayed in
84 the configure script. This makes it easy for readers (and editors)
85 to match up the dependency list with what is required or desired. -->
86
87 <bridgehead renderas="sect4">Recommended</bridgehead>
88 <para role="recommended">
89 <xref linkend="faac"/>,
90 <xref linkend="freetype2"/>,
91 <xref linkend="lame"/>,
92 <xref linkend="openjpeg"/>,
93 <xref linkend="pulseaudio"/>,
94 <xref linkend="speex"/>,
95 <xref linkend="libtheora"/>,
96 <xref linkend="libvorbis"/>,
97 <xref linkend="libvpx"/>,
98 <xref linkend="xvid"/>,
99 <xref linkend="openssl"/>,
100 <xref linkend="sdl"/>,
101 <xref linkend="xorg7-lib"/>,
102 <xref linkend="yasm"/>
103 </para>
104
105 <bridgehead renderas="sect4">Optional</bridgehead>
106 <para role="optional">
107 <xref linkend="fontconfig"/>,
108 <ulink url="http://www.piksel.org/frei0r">frei0r</ulink>,
109 <xref linkend="gnutls"/>,
110 <ulink url="http://tipok.org.ua/node/17">libaacplus</ulink>,
111 <ulink url="http://code.google.com/p/libass/">libass</ulink>,
112 <ulink url="http://www.videolan.org/developers/libbluray.html">libbluray</ulink>,
113 <ulink url="http://caca.zoy.org/">libcaca</ulink>,
114 <ulink url="http://www.celt-codec.org/">libcelt</ulink>,
115 <ulink url="http://ftp.gnu.org/pub/gnu/libcdio/">libcdio</ulink>,
116 <ulink url="http://sourceforge.net/projects/libdc1394">libdc1394</ulink>,
117 <ulink url="http://sourceforge.net/projects/opencore-amr/">fdk-aac</ulink>,
118 <ulink url="http://www.speech.cs.cmu.edu/flite/">Flite</ulink>,
119 <ulink url="http://www.quut.com/gsm/">GSM</ulink>,
120 <ulink url="https://ieee1394.wiki.kernel.org/index.php/Libraries">libiec61883</ulink>,
121 <ulink url="https://github.com/dekkers/libilbc">libilbc</ulink>,
122 <ulink url="http://sourceforge.net/projects/modplug-xmms/">libmodplug</ulink>,
123 <ulink url="http://svn.mplayerhq.hu/nut/src/trunk/">libnut</ulink> (SVN checkout),
124 <ulink url="http://sourceforge.net/projects/opencore-amr">OpenCore AMR</ulink>,
125 <ulink url="http://opencv.org/">OpenCV</ulink>,
126 <ulink url="http://www.opus-codec.org/">Opus</ulink>,
127 <ulink url="http://sourceforge.net/projects/librtmp">librtmp</ulink>,
128 <ulink url="http://diracvideo.org/">Schroedinger</ulink>,
129 <ulink url="http://www.twolame.org/">TwoLAME</ulink>,
130 <ulink url="http://linuxtv.org/downloads/v4l-utils/">Video4Linux</ulink>,
131 <ulink url="http://sourceforge.net/projects/opencore-amr/files/vo-aacenc/">vo-aaenc</ulink>,
132 <ulink url="http://sourceforge.net/projects/opencore-amr/files/vo-amrwbenc/">vo-amrwbenc</ulink>,
133 <ulink url="http://www.videolan.org/developers/x264.html">x264</ulink>,
134 <ulink url="http://xavs.sourceforge.net/">libxavs</ulink> (SVN checkout),
135 <ulink url="http://kcat.strangesoft.net/openal-releases/">OpenAL</ulink>, and
136 <ulink url="http://www.nongnu.org/texi2html">texi2html</ulink> (to build HTML documentation)
137 </para>
138
139 <bridgehead renderas="sect4">Optional (For Hardware Video Decoding)</bridgehead>
140 <para role="optional">
141 <ulink url="http://www.freedesktop.org/wiki/Software/vaapi">VA-API (libva)</ulink>
142 with corresponding drivers, including:
143 <ulink url="http://www.freedesktop.org/software/vaapi/releases/libva-intel-driver/">
144 Intel Driver (i965 chipsets only)</ulink>,
145 <ulink url="http://www.splitted-desktop.com/static/libva/xvba-video/">
146 XVBA Driver for AMD Radeon Cards</ulink>, and
147 <ulink url="http://www.freedesktop.org/software/vaapi/releases/libva-vdpau-driver/">
148 VDPAU Driver for VDPAU capable Cards</ulink>
149 (requires <ulink url="http://cgit.freedesktop.org/~aplattner/libvdpau/">
150 libvdpau</ulink>)
151 </para>
152
153 <para condition="html" role="usernotes">
154 User Notes: <ulink url="&blfs-wiki;/ffmpeg"/>
155 </para>
156 </sect2>
157
158 <sect2 role="installation">
159 <title>Installation of FFmpeg</title>
160
161 <para>
162 If <application>Xorg</application> is installed in a prefix other
163 than <filename class='directory'>/usr</filename>, the build will fail. Fix
164 this by issuing the following command:
165 </para>
166
167<screen><userinput>export LIBRARY_PATH=$XORG_PREFIX/lib</userinput></screen>
168
169 <para>
170 Install <application>FFmpeg</application> by running the following
171 commands:
172 </para>
173
174 <!-- The confiure optinos are listed in the order as they are displayed in
175 the configure script. This makes it easy for readers (and editors)
176 to match up the options with what is required or desired. -->
177
178<screen><userinput>sed -i 's/-lflite"/-lflite -lasound"/' configure &amp;&amp;
179./configure --prefix=/usr \
180 --enable-gpl \
181 --enable-version3 \
182 --enable-nonfree \
183 --disable-static \
184 --enable-shared \
185 --enable-x11grab \
186 --enable-libfaac \
187 --enable-libfreetype \
188 --enable-libmp3lame \
189 --enable-libopenjpeg \
190 --enable-libpulse \
191 --enable-libspeex \
192 --enable-libtheora \
193 --enable-libvorbis \
194 --enable-libvpx \
195 --enable-libxvid \
196 --enable-openssl \
197 --disable-debug &amp;&amp;
198make &amp;&amp;
199gcc tools/qt-faststart.c -o tools/qt-faststart &amp;&amp;
200unset LIBRARY_PATH</userinput></screen>
201
202 <para>
203 HTML documentation was built in the previous step if
204 <ulink url="http://www.nongnu.org/texi2html">texi2html</ulink> is
205 installed. If the HTML was built (check for any
206 <filename class="extension">.html</filename> files in the
207 <filename class="directory">doc</filename> directory) and you have
208 <xref linkend="texlive"/> installed and wish to build PDF and
209 Postscript versions of the documentation, issue the following commands:
210 </para>
211
212<screen><userinput>pushd doc &amp;&amp;
213for DOCNAME in `basename -s .html *.html`
214do
215 texi2pdf -b $DOCNAME.texi &amp;&amp;
216 texi2dvi -b $DOCNAME.texi &amp;&amp;
217 dvips -o $DOCNAME.ps \
218 $DOCNAME.dvi &amp;&amp;
219done &amp;&amp;
220popd &amp;&amp;
221unset DOCNAME</userinput></screen>
222
223 <para>
224 If you have <xref linkend="doxygen"/> installed and wish to create the API
225 documentation (takes about 300 MB of space), issue the command
226 <command>doxygen doc/Doxyfile</command>.
227 </para>
228
229 <para>
230 To properly test the installation you must have <xref linkend="rsync"/>
231 installed and follow the instructions for the
232 <ulink url="http://ffmpeg.org/fate.html">
233 FFmpeg Automated Testing Environment</ulink>. Note that the BLFS team has
234 not performed this regression testing.
235 </para>
236
237 <para>
238 Now, as the <systemitem class="username">root</systemitem> user:
239 </para>
240
241<screen role="root"><userinput>make install &amp;&amp;
242install -v -m755 tools/qt-faststart /usr/bin &amp;&amp;
243install -v -m755 -d /usr/share/doc/ffmpeg-&ffmpeg-version; &amp;&amp;
244install -v -m644 doc/*.txt \
245 /usr/share/doc/ffmpeg-&ffmpeg-version;</userinput></screen>
246
247 <para>
248 If HTML documentation was built, issue the following command to install it:
249 </para>
250
251<screen role="root"><userinput>install -v -m644 doc/*.html \
252 /usr/share/doc/ffmpeg-&ffmpeg-version;</userinput></screen>
253
254 <para>
255 If you used <command>doxygen</command> to create the API documentation,
256 install it (another 300 MB of space) by issuing the following commands
257 as the <systemitem class="username">root</systemitem> user:
258 </para>
259
260<screen role="root"><userinput>install -v -m755 -d /usr/share/doc/ffmpeg-&ffmpeg-version;/api &amp;&amp;
261install -v -m644 doc/doxy/html/* \
262 /usr/share/doc/ffmpeg-&ffmpeg-version;/api</userinput></screen>
263
264 </sect2>
265
266 <sect2 role="commands">
267 <title>Command Explanations</title>
268
269 <para>
270 <command>sed -i ...</command>: This command adds the
271 <application>ALSA</application> library to the
272 <application>Flite</application> <envar>LDFLAGS</envar> variable and
273 enables the discovery of <application>Flite</application>.
274 </para>
275
276 <para>
277 <command>gcc tools/qt-faststart.c -o tools/qt-faststart</command>:
278 This builds the <command>qt-faststart</command> program which can
279 modify QuickTime formatted movies
280 (<filename class="extension">.mov</filename> or
281 <filename class="extension">.mp4</filename>) so that the header information
282 is located at the beginning of the file instead of the end. This allows
283 the movie file to begin playing before the entire file has been downloaded.
284 </para>
285
286 <para>
287 <parameter>--enable-gpl</parameter>: Enables the use of GPL code and
288 permits support for postprocessing, swscale and many other features.
289 </para>
290
291 <para>
292 <parameter>--enable-version3</parameter>: Enables the use of (L)GPL
293 version 3 code.
294 </para>
295
296 <para>
297 <parameter>--enable-nonfree</parameter>: Enables the use of nonfree
298 code. Note that the resulting libraries and binaries will be
299 unredistributable.
300 </para>
301
302 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
303 href="../../xincludes/static-libraries.xml"/>
304
305 <para>
306 <parameter>--enable-shared</parameter>: Enables building shared libraries,
307 otherwise only static libraries are built and installed.
308 </para>
309
310 <para>
311 <parameter>--enable-x11grab</parameter>: Enables X11 grabbing.
312 </para>
313
314 <para>
315 <parameter>--enable-libfaac</parameter>: Enables AAC encoding via
316 <filename class="libraryfile">libfaac</filename>.
317 </para>
318
319 <para>
320 <parameter>--enable-libfreetype</parameter>: Enables the use of
321 <filename class="libraryfile">libfreetype</filename>.
322 </para>
323
324 <para>
325 <parameter>--enable-libmp3lame</parameter>: Enables MP3 encoding via
326 <filename class="libraryfile">libmp3lame</filename>.
327 </para>
328
329 <para>
330 <parameter>--enable-libopenjpeg</parameter>: Enables JPEG 2000 de/encoding
331 via <filename class="libraryfile">libopenjpeg</filename>.
332 </para>
333
334 <para>
335 <parameter>--enable-libpulse</parameter>: Enables
336 <application>Pulseaudio</application> input via
337 <filename class="libraryfile">libpulse</filename>.
338 </para>
339
340 <para>
341 <parameter>--enable-libspeex</parameter>: Enables
342 <application>Speex</application> de/encoding
343 via <filename class="libraryfile">libspeex</filename>.
344 </para>
345
346 <para>
347 <parameter>--enable-libtheora</parameter>: Enables
348 <application>Theora</application> encoding
349 via <filename class="libraryfile">libtheora</filename>.
350 </para>
351
352 <para>
353 <parameter>--enable-libvorbis</parameter>: Enables
354 <application>Vorbis</application> de/encoding
355 via <filename class="libraryfile">libvorbis</filename>.
356 </para>
357
358 <para>
359 <parameter>--enable-libvpx</parameter>: Enables VP8 de/encoding
360 via <filename class="libraryfile">libvpx</filename>.
361 </para>
362
363 <para>
364 <parameter>--enable-libxvid</parameter>: Enables
365 <application>Xvid</application> encoding
366 via <filename class="libraryfile">libxvidcore</filename>.
367 </para>
368
369 <para>
370 <parameter>--enable-openssl</parameter>: Enables
371 <application>OpenSSL</application> cryptography.
372 </para>
373
374 <para>
375 <parameter>--disable-debug</parameter>: Disables building debugging
376 symbols into the programs and libraries.
377 </para>
378
379 <para>
380 <option>--enable-<replaceable>&lt;codec&gt;</replaceable></option>:
381 <application>FFmpeg</application> comes with code to compile decoders for
382 almost every codec you could think of. The only reason to enable a
383 specific codec (and make <application>FFmpeg</application> link to the
384 prerequisite shared library installed on your system) is to make
385 <application>FFmpeg</application> compile an <emphasis>encoder</emphasis>
386 for that codec. <application>FFmpeg</application> provides an excellent
387 collection of decoders. If you just want to use
388 <application>FFmpeg</application> to watch video or listen to music (via
389 other applications such as <application>Gstreamer</application> or
390 <application>Xine</application>) then you will not benefit from linking
391 <application>FFmpeg</application> to other codec libraries.
392 </para>
393
394 </sect2>
395
396 <sect2 role="configuration">
397 <title>Configuring FFmpeg</title>
398
399 <sect3 id="ffmpeg-config">
400 <title>Config Files</title>
401
402 <para>
403 <filename>/etc/ffserver.conf</filename> and
404 <filename>~/.ffmpeg/ffserver-config</filename>
405 </para>
406
407 <indexterm zone="ffmpeg ffmpeg-config">
408 <primary
409 sortas="e-AA.ffmpeg-ffserver-config">~/.ffmpeg/ffserver-config</primary>
410 </indexterm>
411
412 <indexterm zone="ffmpeg ffmpeg-config">
413 <primary sortas="e-etc-ffserver.conf">/etc/ffserver.conf</primary>
414 </indexterm>
415
416 <para>
417 You'll find a sample <command>ffserver</command> configuration file at
418 <filename>doc/ffserver.conf</filename> in the source tree.
419 </para>
420
421 </sect3>
422
423 </sect2>
424
425 <sect2 role="content">
426 <title>Contents</title>
427
428 <segmentedlist>
429 <segtitle>Installed Programs</segtitle>
430 <segtitle>Installed Libraries</segtitle>
431 <segtitle>Installed Directories</segtitle>
432
433 <seglistitem>
434 <seg>
435 ffmpeg, ffplay, ffprobe, ffserver and
436 qt-faststart
437 </seg>
438 <seg>
439 libavcodec.so, libavdevice.so, libavfilter.so,
440 libavformat.so, libavutil.so, libpostproc.so,
441 libswresample and libswscale.so
442 </seg>
443 <seg>
444 /usr/include/libavcodec,
445 /usr/include/libavdevice,
446 /usr/include/libavfilter,
447 /usr/include/libavformat,
448 /usr/include/libavutil,
449 /usr/include/libpostproc,
450 /usr/include/libswresample
451 /usr/include/libswscale,
452 /usr/share/ffmpeg and
453 /usr/share/doc/ffmpeg-&ffmpeg-version;
454 </seg>
455 </seglistitem>
456 </segmentedlist>
457
458 <variablelist>
459 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
460 <?dbfo list-presentation="list"?>
461 <?dbhtml list-presentation="table"?>
462
463 <varlistentry id="ffmpeg-prog">
464 <term><command>ffmpeg</command></term>
465 <listitem>
466 <para>
467 is a command-line tool to convert video files, network streams and
468 input from a TV card to several video formats.
469 </para>
470 <indexterm zone="ffmpeg ffmpeg-prog">
471 <primary sortas="b-ffmpeg">ffmpeg</primary>
472 </indexterm>
473 </listitem>
474 </varlistentry>
475
476 <varlistentry id="ffplay">
477 <term><command>ffplay</command></term>
478 <listitem>
479 <para>
480 is a very simple and portable media player using the
481 <filename>ffmpeg</filename> libraries and the SDL library.
482 </para>
483 <indexterm zone="ffmpeg ffplay">
484 <primary sortas="b-ffplay">ffplay</primary>
485 </indexterm>
486 </listitem>
487 </varlistentry>
488
489 <varlistentry id="ffprobe">
490 <term><command>ffprobe</command></term>
491 <listitem>
492 <para>
493 gathers information from multimedia streams and prints it in a human
494 and machine-readable fashion.
495 </para>
496 <indexterm zone="ffmpeg ffprobe">
497 <primary sortas="b-ffprobe">ffprobe</primary>
498 </indexterm>
499 </listitem>
500 </varlistentry>
501
502 <varlistentry id="ffserver">
503 <term><command>ffserver</command></term>
504 <listitem>
505 <para>
506 is a streaming server for everything that <command>ffmpeg</command>
507 could use as input (files, streams, TV card input, webcam, etc).
508 </para>
509 <indexterm zone="ffmpeg ffserver">
510 <primary sortas="b-ffserver">ffserver</primary>
511 </indexterm>
512 </listitem>
513 </varlistentry>
514
515 <varlistentry id="qt-faststart">
516 <term><command>qt-faststart</command></term>
517 <listitem>
518 <para>
519 moves the index file to the front of quicktime (mov/mp4) videos.
520 </para>
521 <indexterm zone="ffmpeg qt-faststart">
522 <primary sortas="b-qt-faststart">qt-faststart</primary>
523 </indexterm>
524 </listitem>
525 </varlistentry>
526
527 <varlistentry id="libavcodec">
528 <term><filename class="libraryfile">libavcodec.so</filename></term>
529 <listitem>
530 <para>
531 is a library containing the <application>FFmpeg</application> codecs
532 (both encoding and decoding).
533 </para>
534 <indexterm zone="ffmpeg libavcodec">
535 <primary sortas="c-libavcodec">libavcodec.so</primary>
536 </indexterm>
537 </listitem>
538 </varlistentry>
539
540 <varlistentry id="libavdevice">
541 <term><filename class="libraryfile">libavdevice.so</filename></term>
542 <listitem>
543 <para>
544 is the <application>FFmpeg</application> device handling library.
545 </para>
546 <indexterm zone="ffmpeg libavdevice">
547 <primary sortas="c-libavdevice">libavdevice.so</primary>
548 </indexterm>
549 </listitem>
550 </varlistentry>
551
552 <varlistentry id="libavfilter">
553 <term><filename class="libraryfile">libavfilter.so</filename></term>
554 <listitem>
555 <para>
556 is a library of filters that can alter video or audio between the
557 decoder and the encoder (or output).
558 </para>
559 <indexterm zone="ffmpeg libavfilter">
560 <primary sortas="c-libavfilter">libavfilter.so</primary>
561 </indexterm>
562 </listitem>
563 </varlistentry>
564
565 <varlistentry id="libavformat">
566 <term><filename class="libraryfile">libavformat.so</filename></term>
567 <listitem>
568 <para>
569 is a library containing the file formats handling (mux and demux
570 code for several formats) used by <command>ffplay</command> as well
571 as allowing the generation of audio or video streams.
572 </para>
573 <indexterm zone="ffmpeg libavformat">
574 <primary sortas="c-libavformat">libavformat.so</primary>
575 </indexterm>
576 </listitem>
577 </varlistentry>
578
579 <varlistentry id="libavutil">
580 <term><filename class="libraryfile">libavutil.so</filename></term>
581 <listitem>
582 <para>
583 is the <application>FFmpeg</application> utility library.
584 </para>
585 <indexterm zone="ffmpeg libavutil">
586 <primary sortas="c-libavutil">libavutil.so</primary>
587 </indexterm>
588 </listitem>
589 </varlistentry>
590
591 <varlistentry id="libpostproc">
592 <term><filename class="libraryfile">libpostproc.so</filename></term>
593 <listitem>
594 <para>
595 is the <application>FFmpeg</application> post processing library.
596 </para>
597 <indexterm zone="ffmpeg libpostproc">
598 <primary sortas="c-libpostproc">libpostproc.so</primary>
599 </indexterm>
600 </listitem>
601 </varlistentry>
602
603 <varlistentry id="libswresample">
604 <term><filename class="libraryfile">libswresample.so</filename></term>
605 <listitem>
606 <para>
607 is the <application>FFmpeg</application> audio rescaling library,
608 it contains functions for converting audio sample formats.
609 </para>
610 <indexterm zone="ffmpeg libswresample">
611 <primary sortas="c-libswresample">libswresample.so</primary>
612 </indexterm>
613 </listitem>
614 </varlistentry>
615
616 <varlistentry id="libswscale">
617 <term><filename class="libraryfile">libswscale.so</filename></term>
618 <listitem>
619 <para>
620 is the <application>FFmpeg</application> image rescaling library.
621 </para>
622 <indexterm zone="ffmpeg libswscale">
623 <primary sortas="c-libswscale">libswscale.so</primary>
624 </indexterm>
625 </listitem>
626 </varlistentry>
627
628 </variablelist>
629
630 </sect2>
631
632</sect1>
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