source: multimedia/videoutils/ffmpeg.xml@ a4c3c48

10.1 11.0 ken/refactor-virt lazarus qt5new trunk xry111/git-date xry111/git-date-for-trunk xry111/git-date-test
Last change on this file since a4c3c48 was a4c3c48, checked in by Douglas R. Reno <renodr@…>, 8 months ago

Update to ffmpeg-4.3.2
A few tags and URL updates

git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@24279 af4574ff-66df-0310-9fd7-8a98e5e911e0

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File size: 24.7 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 "http://ffmpeg.org/releases/ffmpeg-&ffmpeg-version;.tar.xz">
8 <!ENTITY ffmpeg-download-ftp " ">
9 <!ENTITY ffmpeg-md5sum "29529337d9b8f794a6142db10b717ec5">
10 <!ENTITY ffmpeg-size "9.0 MB">
11 <!ENTITY ffmpeg-buildsize "206 MB (add 2.4 GB for the FATE suite/tests, add 1.4 GB for documentation)">
12 <!ENTITY ffmpeg-time "1.3 SBU (using parallelism=4; add 3.6 SBU (with THREADS=4) to run the FATE suite after sample files are downloaded; add 0.7 SBU for doxygen docs)">
13]>
14
15<sect1 id="ffmpeg" xreflabel="FFmpeg-&ffmpeg-version;">
16 <?dbhtml filename="ffmpeg.html"?>
17
18 <sect1info>
19 <othername>$LastChangedBy$</othername>
20 <date>$Date$</date>
21 </sect1info>
22
23 <title>FFmpeg-&ffmpeg-version;</title>
24
25 <indexterm zone="ffmpeg">
26 <primary sortas="a-FFmpeg">FFmpeg</primary>
27 </indexterm>
28
29 <sect2 role="package">
30 <title>Introduction to FFmpeg</title>
31
32 <para>
33 <application>FFmpeg</application> is a solution to record, convert and
34 stream audio and video. It is a very fast video and audio converter and it
35 can also acquire from a live audio/video source. Designed to be intuitive,
36 the command-line interface (<command>ffmpeg</command>) tries to figure out
37 all the parameters, when possible. <application>FFmpeg</application> can
38 also convert from any sample rate to any other, and resize video on the
39 fly with a high quality polyphase filter.
40 <application>FFmpeg</application> can use a Video4Linux compatible video
41 source and any Open Sound System audio source.
42 </para>
43
44 &lfs101_checked;
45
46 <bridgehead renderas="sect3">Package Information</bridgehead>
47 <itemizedlist spacing="compact">
48 <listitem>
49 <para>
50 Download (HTTP): <ulink url="&ffmpeg-download-http;"/>
51 </para>
52 </listitem>
53 <listitem>
54 <para>
55 Download (FTP): <ulink url="&ffmpeg-download-ftp;"/>
56 </para>
57 </listitem>
58 <listitem>
59 <para>
60 Download MD5 sum: &ffmpeg-md5sum;
61 </para>
62 </listitem>
63 <listitem>
64 <para>
65 Download size: &ffmpeg-size;
66 </para>
67 </listitem>
68 <listitem>
69 <para>
70 Estimated disk space required: &ffmpeg-buildsize;
71 </para>
72 </listitem>
73 <listitem>
74 <para>
75 Estimated build time: &ffmpeg-time;
76 </para>
77 </listitem>
78 </itemizedlist>
79
80 <bridgehead renderas="sect3">FFmpeg Dependencies</bridgehead>
81
82 <bridgehead renderas="sect4">Recommended</bridgehead>
83 <para role="recommended">
84 <xref linkend="libass"/>,
85 <xref linkend="fdk-aac"/>,
86 <xref linkend="freetype2"/>,
87 <xref linkend="lame"/>,
88 <xref linkend="libtheora"/>,
89 <xref linkend="libvorbis"/>,
90 <xref linkend="libvpx"/>,
91 <xref linkend="opus"/>,
92 <xref linkend="x264"/>,
93 <xref linkend="x265"/>, and
94 <xref linkend="nasm"/> or <xref linkend="yasm"/>
95 </para>
96
97 <bridgehead renderas="sect4">Recommended for desktop use</bridgehead>
98 <para role="recommended">
99 <xref linkend="alsa-lib"/>,
100 <xref linkend="libva"/>,
101 <xref linkend="libvdpau"/> (with the corresponding driver package), and
102 <xref linkend="sdl2"/>
103 </para>
104
105 <bridgehead renderas="sect4">Optional</bridgehead>
106 <para role="optional">
107 <xref linkend="doxygen"/>,
108 <xref linkend="fontconfig"/>,
109 <xref linkend="fribidi"/>,
110 <xref linkend="frei0r"/>,
111 <xref linkend="libcdio"/> (to identify and play CDs),
112 <xref linkend="libdrm"/> (for <quote>kmsgrab</quote> input),
113 <xref linkend="libwebp"/>,
114 <xref linkend="opencv"/>,
115 <xref linkend="openjpeg2"/>,
116 <xref linkend="gnutls"/>,
117 <xref linkend="pulseaudio"/>,
118 <xref linkend="samba"/>,
119 <xref linkend="speex"/>,
120 <xref linkend="texlive"/>
121 (or <xref linkend="tl-installer"/>) for PDF and PS documentation,
122 <xref linkend="v4l-utils"/>,
123 <xref linkend="xvid"/>,
124 <xref linkend="x-window-system"/>,
125 <ulink url="http://www.speech.cs.cmu.edu/flite/">Flite</ulink>,
126 <ulink url="http://www.quut.com/gsm/">GSM</ulink>,
127 <!--<ulink url="http://xhevc.com/en/hevc/decoder/download.jsp">HEVC/H.265</ulink>,-->
128 <!--<ulink url="http://www.ladspa.org/">LADSPA</ulink>,-->
129 <ulink url="http://tipok.org.ua/node/17">libaacplus</ulink>,
130 <ulink url="http://www.videolan.org/developers/libbluray.html">libbluray</ulink>,
131 <ulink url="http://caca.zoy.org/">libcaca</ulink>,
132 <ulink url="https://gitlab.xiph.org/xiph/celt">libcelt</ulink>,
133 <ulink url="http://sourceforge.net/projects/libdc1394">libdc1394</ulink>,
134 <ulink url="https://www.videolan.org/developers/libdca.html">libdca</ulink>,
135 <ulink url="https://ieee1394.wiki.kernel.org/index.php/Libraries">libiec61883</ulink>,
136 <ulink url="https://github.com/dekkers/libilbc">libilbc</ulink>,
137 <ulink url="http://sourceforge.net/projects/modplug-xmms/">libmodplug</ulink>,
138 <ulink url="https://github.com/Distrotech/libnut">libnut</ulink> (Git checkout),
139 <ulink url="http://rtmpdump.mplayerhq.hu/">librtmp</ulink>,
140 <ulink url="http://www.libssh.org/">libssh</ulink>,
141 <!--<ulink url="http://xavs.sourceforge.net/">libxavs</ulink> (SVN checkout),-->
142 <ulink url="https://openal.org/">OpenAL</ulink>,
143 <ulink url="http://sourceforge.net/projects/opencore-amr">OpenCore AMR</ulink>,
144 <!--<ulink url="http://diracvideo.org/">Schroedinger</ulink>,-->
145 <ulink url="http://sourceforge.net/projects/schrodinger/">Schroedinger</ulink>,
146 <ulink url="http://www.twolame.org/">TwoLAME</ulink>,
147 <ulink url="http://sourceforge.net/projects/opencore-amr/files/vo-aacenc/">vo-aaenc</ulink>,
148 <ulink url="http://sourceforge.net/projects/opencore-amr/files/vo-amrwbenc/">vo-amrwbenc</ulink>, and
149 <!--<ulink url="http://www.videolan.org/developers/x265.html">x265 (H.265/MPEG-H HEVC)</ulink>, and-->
150 <ulink url="http://zapping.sourceforge.net/ZVBI/">ZVBI</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 Install <application>FFmpeg</application> by running the following
163 commands:
164 </para>
165
166<screen><userinput>sed -i 's/-lflite"/-lflite -lasound"/' configure &amp;&amp;
167
168./configure --prefix=/usr \
169 --enable-gpl \
170 --enable-version3 \
171 --enable-nonfree \
172 --disable-static \
173 --enable-shared \
174 --disable-debug \
175 --enable-avresample \
176 --enable-libass \
177 --enable-libfdk-aac \
178 --enable-libfreetype \
179 --enable-libmp3lame \
180 --enable-libopus \
181 --enable-libtheora \
182 --enable-libvorbis \
183 --enable-libvpx \
184 --enable-libx264 \
185 --enable-libx265 \
186 --enable-openssl \
187 --docdir=/usr/share/doc/ffmpeg-&ffmpeg-version; &amp;&amp;
188
189make &amp;&amp;
190
191gcc tools/qt-faststart.c -o tools/qt-faststart</userinput></screen>
192
193 <para>
194 HTML documentation was built in the previous step. If you have
195 <xref linkend="texlive"/> installed and wish to build PDF and
196 Postscript versions of the documentation, issue the following commands:
197 </para>
198
199<!-- sed -i '$s/$/\n\n@bye/' doc/{git-howto,nut,fate}.texi &amp;&amp;
200sed -i '/machine:i386/ s/\\/@backslashchar{}/g' doc/platform.texi &amp;&amp; -->
201<screen remap="doc"><userinput>pushd doc &amp;&amp;
202for DOCNAME in `basename -s .html *.html`
203do
204 texi2pdf -b $DOCNAME.texi &amp;&amp;
205 texi2dvi -b $DOCNAME.texi &amp;&amp;
206
207 dvips -o $DOCNAME.ps \
208 $DOCNAME.dvi
209done &amp;&amp;
210popd &amp;&amp;
211unset DOCNAME</userinput></screen>
212
213 <para>
214 If you have <xref linkend="doxygen"/> installed
215 and you wish to build (if --disable-doc was
216 used) or rebuild the html documentation, issue:
217 </para>
218
219<screen remap="doc"><userinput>doxygen doc/Doxyfile</userinput></screen>
220
221 <para>
222 The fate-suite tests include comparisons with installed files, and should
223 not be run before the package is installed. Therefore, if you desire to
224 run them, instructions are given further below.
225 </para>
226
227 <para>
228 Now, as the <systemitem class="username">root</systemitem> user:
229 </para>
230
231<screen role="root"><userinput>make install &amp;&amp;
232
233install -v -m755 tools/qt-faststart /usr/bin &amp;&amp;
234install -v -m755 -d /usr/share/doc/ffmpeg-&ffmpeg-version; &amp;&amp;
235install -v -m644 doc/*.txt /usr/share/doc/ffmpeg-&ffmpeg-version;</userinput></screen>
236
237 <para>
238 If the PDF and Postscript documentation was built, issue the following
239 commands, as the <systemitem class="username">root</systemitem> user, to
240 install them:
241 </para>
242
243<screen role="root"
244 remap="doc"><userinput>install -v -m644 doc/*.pdf /usr/share/doc/ffmpeg-&ffmpeg-version; &amp;&amp;
245install -v -m644 doc/*.ps /usr/share/doc/ffmpeg-&ffmpeg-version;</userinput></screen>
246
247 <para>
248 If you used <command>doxygen</command> to manually create the API
249 documentation, install it by issuing the following commands
250 as the <systemitem class="username">root</systemitem> user:
251 </para>
252
253<screen role="root"
254 remap="doc"><userinput>install -v -m755 -d /usr/share/doc/ffmpeg-&ffmpeg-version;/api &amp;&amp;
255cp -vr doc/doxy/html/* /usr/share/doc/ffmpeg-&ffmpeg-version;/api &amp;&amp;
256find /usr/share/doc/ffmpeg-&ffmpeg-version;/api -type f -exec chmod -c 0644 \{} \; &amp;&amp;
257find /usr/share/doc/ffmpeg-&ffmpeg-version;/api -type d -exec chmod -c 0755 \{} \;</userinput></screen>
258
259 <para>
260 To properly test the installation you must have <xref linkend="rsync"/>
261 installed and follow the instructions for the <ulink
262 url="http://www.ffmpeg.org/fate.html"> FFmpeg Automated Testing
263 Environment</ulink> (FATE). First, about 1 GB of sample files used to
264 run FATE are downloaded with the command:
265 </para>
266
267<screen remap="test"><userinput>make fate-rsync SAMPLES=fate-suite/</userinput></screen>
268
269 <para>
270 The <filename class="directory">fate-suite</filename> directory is
271 created and the files are downloaded there. That command actually runs an
272 rsync command, to obtain the sample files. You may want to compress and
273 keep this directory for testing again, in another system, or when a new
274 version of ffmpeg is launched. Then, you unpack the sample files in the
275 source directory, and run, again, the <command>make fate-rsync
276 ...</command> command above, to sync with the repository. Now, the
277 download size and time are drastically reduced. Estimated values in
278 "Package Information" do not include the download SBU. Some samples may
279 have been removed, in the new version, so, in order to be sure local and
280 server fate samples are identical, when you use previously saved samples,
281 run the following command:
282 </para>
283
284<screen role="nodump"><userinput>rsync -vrltLW --delete --timeout=60 --contimeout=60 \
285 rsync://fate-suite.ffmpeg.org/fate-suite/ fate-suite/</userinput></screen>
286
287 <para>
288 Next, FATE is executed, with the commands (you obtain a number of tests
289 larger than 3700):
290 </para>
291
292<screen remap="test"><userinput>make fate THREADS=<replaceable>N</replaceable> SAMPLES=fate-suite/ | tee ../fate.log &amp;&amp;
293grep ^TEST ../fate.log | wc -l</userinput></screen>
294
295 <para>
296 where <replaceable>N</replaceable> is an integer,
297 <replaceable>N</replaceable> &le; number of cores in the system.
298 </para>
299
300 </sect2>
301
302 <sect2 role="commands">
303 <title>Command Explanations</title>
304
305 <para>
306 <command>sed -i ... configure</command>: This command adds the
307 <application>ALSA</application> library to the
308 <application>Flite</application> <envar>LDFLAGS</envar> variable and
309 enables the discovery of <application>Flite</application>.
310 </para>
311
312 <para>
313 <command>find ... ;</command>: Fixes permissions of documentation files
314 and directories.
315 </para>
316
317 <para>
318 <parameter>--enable-libfreetype</parameter>: Enables
319 <application>Freetype</application> support.
320 </para>
321
322 <para>
323 <parameter>--enable-gpl</parameter>: Enables the use of GPL code and
324 permits support for postprocessing, swscale and many other features.
325 </para>
326
327 <para>
328 <parameter>--enable-version3</parameter>: Enables the use of (L)GPL
329 version 3 code.
330 </para>
331
332 <para>
333 <parameter>--enable-nonfree</parameter>: Enables the use of nonfree code.
334 Note that the resulting libraries and binaries will be unredistributable.
335 </para>
336
337 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
338 href="../../xincludes/static-libraries.xml"/>
339
340 <para>
341 <parameter>--enable-shared</parameter>: Enables building shared
342 libraries, otherwise only static libraries are built and installed.
343 </para>
344
345 <para>
346 <parameter>--disable-debug</parameter>: Disables building debugging
347 symbols into the programs and libraries.
348 </para>
349
350 <para>
351 <parameter>--enable-avresample</parameter>: Enables
352 <xref linkend="transcode"/> to be compiled.
353 </para>
354
355 <para>
356 <parameter>--enable-libass</parameter>: Enables ASS/SSA subtitle format
357 rendering via <filename class="libraryfile">libass</filename>.
358 </para>
359
360 <para>
361 <option>--enable-libdrm</option>: Use this switch if
362 <xref linkend="libdrm"/> is installed to build the <quote>kmsgrab</quote>
363 input module which is useful for screen capturing or streaming.
364 </para>
365
366 <para>
367 <parameter>--enable-libfdk-aac</parameter>: Enables currently the
368 highest-quality AAC audio encoding via <filename
369 class="libraryfile">libfdk-aac</filename>.
370 </para>
371
372 <para>
373 <parameter>--enable-libmp3lame</parameter>: Enables MP3 audio encoding
374 via <filename class="libraryfile">libmp3lame</filename>.
375 </para>
376
377 <para>
378 <parameter>--enable-libvorbis --enable-libtheora</parameter>: Enables
379 Theora video encoding via <filename
380 class="libraryfile">libvorbis</filename> and <filename
381 class="libraryfile">libtheora</filename>.
382 </para>
383
384 <para>
385 <parameter>--enable-libvorbis --enable-libvpx</parameter>: Enables WebM
386 encoding via <filename class="libraryfile">libvorbis</filename> and
387 <filename class="libraryfile">libvpx</filename>.
388 </para>
389
390 <para>
391 <parameter>--enable-libx264</parameter>: Enables high-quality
392 H.264/MPEG-4 AVC encoding via <filename
393 class="libraryfile">libx264</filename>.
394 </para>
395
396 <para>
397 <parameter>--enable-libx265</parameter>: Enables high-quality
398 H.265/HEVC encoding via <filename
399 class="libraryfile">libx265</filename>.
400 </para>
401
402 <para>
403 <parameter>--enable-openssl</parameter>:
404 Enables HTTPS protocol for network streams.
405 </para>
406
407 <para>
408 <option>--enable-gnutls</option>: Use this option instead of
409 <parameter>--enable-openssl</parameter>, if you want to use
410 <application>GnuTLS</application> instead of
411 <application>OpenSSL</application> for HTTPS protocol.
412 </para>
413
414 <para>
415 <option>--disable-doc</option>: Disables building html documentation.
416 This is only needed if <xref linkend="doxygen"/> is installed and you
417 do not want to build the html documentation.
418 </para>
419
420 <para>
421 <option>--enable-libpulse</option>: Enables support for
422 <application>Pulseaudio</application> for audio output.
423 </para>
424
425 <para>
426 <command>gcc tools/qt-faststart.c -o tools/qt-faststart</command>: This
427 builds the <command>qt-faststart</command> program which can modify
428 QuickTime formatted movies (<filename class="extension">.mov</filename>
429 or <filename class="extension">.mp4</filename>) so that the header
430 information is located at the beginning of the file instead of the end.
431 This allows the movie file to begin playing before the entire file has
432 been downloaded.
433 </para>
434
435 <note>
436 <para>
437 Support for most of the dependency packages requires using options
438 passed to the <command>configure</command> script. View the output
439 from <command>./configure --help</command> for complete information
440 about enabling dependency packages.
441 </para>
442 </note>
443
444 </sect2>
445
446<!-- ffserver has been removed
447 <sect2 role="configuration">
448 <title>Configuring FFmpeg</title>
449
450 <sect3 id="ffmpeg-config">
451 <title>Config Files</title>
452
453 <para>
454 <filename>/etc/ffserver.conf</filename>
455 <filename>~/.ffmpeg/ffserver-config</filename>
456 </para>
457
458 <indexterm zone="ffmpeg ffmpeg-config">
459 <primary
460 sortas="e-AA.ffmpeg-ffserver-config">~/.ffmpeg/ffserver-config</primary>
461 </indexterm>
462
463 <indexterm zone="ffmpeg ffmpeg-config">
464 <primary sortas="e-etc-ffserver.conf">/etc/ffserver.conf</primary>
465 </indexterm>
466
467 <para>
468 You'll find a sample <command>ffserver</command> configuration file at
469 <filename>doc/ffserver.conf</filename> in the source tree.
470 </para>
471
472 </sect3>
473
474 </sect2>
475 -->
476
477 <sect2 role="content">
478 <title>Contents</title>
479
480 <segmentedlist>
481 <segtitle>Installed Programs</segtitle>
482 <segtitle>Installed Libraries</segtitle>
483 <segtitle>Installed Directories</segtitle>
484
485 <seglistitem>
486 <seg>
487 ffmpeg, ffplay, ffprobe, <!--ffserver,--> and qt-faststart
488 </seg>
489 <seg>
490 libavcodec.so, libavdevice.so, libavfilter.so,
491 libavformat.so, libavutil.so, libavresample.so, libpostproc.so,
492 libswresample.so, and libswscale.so
493 </seg>
494 <seg>
495 /usr/include/libav{codec,device,filter,format,resample,util},
496 /usr/include/libpostproc,
497 /usr/include/libsw{resample,scale},
498 /usr/share/doc/ffmpeg-&ffmpeg-version;, and
499 /usr/share/ffmpeg
500 </seg>
501 </seglistitem>
502 </segmentedlist>
503
504 <variablelist>
505 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
506 <?dbfo list-presentation="list"?>
507 <?dbhtml list-presentation="table"?>
508
509 <varlistentry id="ffmpeg-prog">
510 <term><command>ffmpeg</command></term>
511 <listitem>
512 <para>
513 is a command-line tool to convert video files, network streams and
514 input from a TV card to several video formats
515 </para>
516 <indexterm zone="ffmpeg ffmpeg-prog">
517 <primary sortas="b-ffmpeg">ffmpeg</primary>
518 </indexterm>
519 </listitem>
520 </varlistentry>
521
522 <varlistentry id="ffplay">
523 <term><command>ffplay</command></term>
524 <listitem>
525 <para>
526 is a very simple and portable media player using the
527 <filename>ffmpeg</filename> libraries and the SDL library
528 </para>
529 <indexterm zone="ffmpeg ffplay">
530 <primary sortas="b-ffplay">ffplay</primary>
531 </indexterm>
532 </listitem>
533 </varlistentry>
534
535 <varlistentry id="ffprobe">
536 <term><command>ffprobe</command></term>
537 <listitem>
538 <para>
539 gathers information from multimedia streams and prints it in a human
540 and machine-readable fashion
541 </para>
542 <indexterm zone="ffmpeg ffprobe">
543 <primary sortas="b-ffprobe">ffprobe</primary>
544 </indexterm>
545 </listitem>
546 </varlistentry>
547
548<!-- Not found in 4.3.2
549 <varlistentry id="ffserver">
550 <term><command>ffserver</command></term>
551 <listitem>
552 <para>
553 is a streaming server for everything that <command>ffmpeg</command>
554 could use as input (files, streams, TV card input, webcam, etc)
555 </para>
556 <indexterm zone="ffmpeg ffserver">
557 <primary sortas="b-ffserver">ffserver</primary>
558 </indexterm>
559 </listitem>
560 </varlistentry>
561-->
562 <varlistentry id="qt-faststart">
563 <term><command>qt-faststart</command></term>
564 <listitem>
565 <para>
566 moves the index file to the front of quicktime (mov/mp4) videos
567 </para>
568 <indexterm zone="ffmpeg qt-faststart">
569 <primary sortas="b-qt-faststart">qt-faststart</primary>
570 </indexterm>
571 </listitem>
572 </varlistentry>
573
574 <varlistentry id="libavcodec">
575 <term><filename class="libraryfile">libavcodec.so</filename></term>
576 <listitem>
577 <para>
578 is a library containing the <application>FFmpeg</application> codecs
579 (both encoding and decoding)
580 </para>
581 <indexterm zone="ffmpeg libavcodec">
582 <primary sortas="c-libavcodec">libavcodec.so</primary>
583 </indexterm>
584 </listitem>
585 </varlistentry>
586
587 <varlistentry id="libavdevice">
588 <term><filename class="libraryfile">libavdevice.so</filename></term>
589 <listitem>
590 <para>
591 is the <application>FFmpeg</application> device handling library
592 </para>
593 <indexterm zone="ffmpeg libavdevice">
594 <primary sortas="c-libavdevice">libavdevice.so</primary>
595 </indexterm>
596 </listitem>
597 </varlistentry>
598
599 <varlistentry id="libavfilter">
600 <term><filename class="libraryfile">libavfilter.so</filename></term>
601 <listitem>
602 <para>
603 is a library of filters that can alter video or audio between the
604 decoder and the encoder (or output)
605 </para>
606 <indexterm zone="ffmpeg libavfilter">
607 <primary sortas="c-libavfilter">libavfilter.so</primary>
608 </indexterm>
609 </listitem>
610 </varlistentry>
611
612 <varlistentry id="libavformat">
613 <term><filename class="libraryfile">libavformat.so</filename></term>
614 <listitem>
615 <para>
616 is a library containing the file formats handling (mux and demux
617 code for several formats) used by <command>ffplay</command> as well
618 as allowing the generation of audio or video streams
619 </para>
620 <indexterm zone="ffmpeg libavformat">
621 <primary sortas="c-libavformat">libavformat.so</primary>
622 </indexterm>
623 </listitem>
624 </varlistentry>
625
626 <varlistentry id="libavresample">
627 <term><filename class="libraryfile">libavresample.so</filename></term>
628 <listitem>
629 <para>
630 is a library containing functions for resampling audio and video.
631 </para>
632 <indexterm zone="ffmpeg libavresample">
633 <primary sortas="c-libavresample">libavresample</primary>
634 </indexterm>
635 </listitem>
636 </varlistentry>
637
638 <varlistentry id="libavutil">
639 <term><filename class="libraryfile">libavutil.so</filename></term>
640 <listitem>
641 <para>
642 is the <application>FFmpeg</application> utility library
643 </para>
644 <indexterm zone="ffmpeg libavutil">
645 <primary sortas="c-libavutil">libavutil.so</primary>
646 </indexterm>
647 </listitem>
648 </varlistentry>
649
650 <varlistentry id="libpostproc">
651 <term><filename class="libraryfile">libpostproc.so</filename></term>
652 <listitem>
653 <para>
654 is the <application>FFmpeg</application> post processing library
655 </para>
656 <indexterm zone="ffmpeg libpostproc">
657 <primary sortas="c-libpostproc">libpostproc.so</primary>
658 </indexterm>
659 </listitem>
660 </varlistentry>
661
662 <varlistentry id="libswresample">
663 <term><filename class="libraryfile">libswresample.so</filename></term>
664 <listitem>
665 <para>
666 is the <application>FFmpeg</application> audio rescaling library,
667 it contains functions for converting audio sample formats
668 </para>
669 <indexterm zone="ffmpeg libswresample">
670 <primary sortas="c-libswresample">libswresample.so</primary>
671 </indexterm>
672 </listitem>
673 </varlistentry>
674
675 <varlistentry id="libswscale">
676 <term><filename class="libraryfile">libswscale.so</filename></term>
677 <listitem>
678 <para>
679 is the <application>FFmpeg</application> image rescaling library
680 </para>
681 <indexterm zone="ffmpeg libswscale">
682 <primary sortas="c-libswscale">libswscale.so</primary>
683 </indexterm>
684 </listitem>
685 </varlistentry>
686
687 </variablelist>
688
689 </sect2>
690
691</sect1>
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