source: multimedia/videoutils/ffmpeg.xml@ bef1a58

11.3 12.0 12.1 12.2 gimp3 kea ken/TL2024 ken/tuningfonts lazarus lxqt plabs/newcss python3.11 qt5new rahul/power-profiles-daemon renodr/vulkan-addition trunk xry111/for-12.3 xry111/llvm18 xry111/spidermonkey128 xry111/xf86-video-removal
Last change on this file since bef1a58 was bef1a58, checked in by Douglas R. Reno <renodr@…>, 19 months ago

Add a note to ffmpeg about it's documentation generation outputting
warnings with Texinfo-7.0 and higher.

  • Property mode set to 100644
File size: 25.5 KB
Line 
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 "https://ffmpeg.org/releases/ffmpeg-&ffmpeg-version;.tar.xz">
8 <!ENTITY ffmpeg-download-ftp " ">
9 <!ENTITY ffmpeg-md5sum "fa847c43407315c27231b9f883e62c0e">
10 <!ENTITY ffmpeg-size "9.5 MB">
11 <!ENTITY ffmpeg-buildsize "184 MB (add 1.7 GB for the FATE suite/tests, add 766 MB for documentation)">
12 <!ENTITY ffmpeg-time "1.3 SBU (using parallelism=4; add 3.7 SBU (with THREADS=4) to run the FATE suite after sample files are downloaded; add 0.3 SBU for doxygen docs)">
13]>
14
15<sect1 id="ffmpeg" xreflabel="FFmpeg-&ffmpeg-version;">
16 <?dbhtml filename="ffmpeg.html"?>
17
18
19 <title>FFmpeg-&ffmpeg-version;</title>
20
21 <indexterm zone="ffmpeg">
22 <primary sortas="a-FFmpeg">FFmpeg</primary>
23 </indexterm>
24
25 <sect2 role="package">
26 <title>Introduction to FFmpeg</title>
27
28 <para>
29 <application>FFmpeg</application> is a solution to record, convert and
30 stream audio and video. It is a very fast video and audio converter and it
31 can also acquire from a live audio/video source. Designed to be intuitive,
32 the command-line interface (<command>ffmpeg</command>) tries to figure out
33 all the parameters, when possible. <application>FFmpeg</application> can
34 also convert from any sample rate to any other, and resize video on the
35 fly with a high quality polyphase filter.
36 <application>FFmpeg</application> can use a Video4Linux compatible video
37 source and any Open Sound System audio source.
38 </para>
39
40 &lfs113_checked;
41
42 <bridgehead renderas="sect3">Package Information</bridgehead>
43 <itemizedlist spacing="compact">
44 <listitem>
45 <para>
46 Download (HTTP): <ulink url="&ffmpeg-download-http;"/>
47 </para>
48 </listitem>
49 <listitem>
50 <para>
51 Download (FTP): <ulink url="&ffmpeg-download-ftp;"/>
52 </para>
53 </listitem>
54 <listitem>
55 <para>
56 Download MD5 sum: &ffmpeg-md5sum;
57 </para>
58 </listitem>
59 <listitem>
60 <para>
61 Download size: &ffmpeg-size;
62 </para>
63 </listitem>
64 <listitem>
65 <para>
66 Estimated disk space required: &ffmpeg-buildsize;
67 </para>
68 </listitem>
69 <listitem>
70 <para>
71 Estimated build time: &ffmpeg-time;
72 </para>
73 </listitem>
74 </itemizedlist>
75
76 <bridgehead renderas="sect3">Additional Downloads</bridgehead>
77 <itemizedlist spacing="compact">
78 <listitem>
79 <para>
80 Required patch:
81 <ulink url="&patch-root;/ffmpeg-&ffmpeg-version;-chromium_method-1.patch"/>
82 </para>
83 </listitem>
84 </itemizedlist>
85
86 <bridgehead renderas="sect3">FFmpeg Dependencies</bridgehead>
87
88 <bridgehead renderas="sect4">Recommended</bridgehead>
89 <para role="recommended">
90 <xref linkend="libass"/>,
91 <xref linkend="fdk-aac"/>,
92 <xref linkend="freetype2"/>,
93 <xref linkend="lame"/>,
94 <xref linkend="libtheora"/>,
95 <xref linkend="libvorbis"/>,
96 <xref linkend="libvpx"/>,
97 <xref linkend="opus"/>,
98 <xref linkend="x264"/>,
99 <xref linkend="x265"/>, and
100 <xref linkend="nasm"/> or <xref linkend="yasm"/>
101 </para>
102
103 <bridgehead renderas="sect4">Recommended for desktop use</bridgehead>
104 <para role="recommended">
105 <xref linkend="alsa-lib"/>,
106 <xref linkend="libva"/>,
107 <xref linkend="libvdpau"/> (with the corresponding driver package), and
108 <xref linkend="sdl2"/>
109 </para>
110
111 <bridgehead renderas="sect4">Optional</bridgehead>
112 <para role="optional">
113 <xref linkend="doxygen"/>,
114 <xref linkend="fontconfig"/>,
115 <xref linkend="fribidi"/>,
116 <xref linkend="frei0r"/>,
117 <xref linkend="libcdio"/> (to identify and play CDs),
118 <xref linkend="libdrm"/> (for <quote>kmsgrab</quote> input),
119 <xref linkend="libwebp"/>,
120 <xref linkend="opencv"/>,
121 <xref linkend="openjpeg2"/>,
122 <xref linkend="gnutls"/>,
123 <xref linkend="pulseaudio"/>,
124 <xref linkend="samba"/>,
125 <xref linkend="speex"/>,
126 <xref linkend="texlive"/>
127 (or <xref linkend="tl-installer"/>) for PDF and PS documentation,
128 <xref linkend="v4l-utils"/>,
129 <xref linkend="xvid"/>,
130 <xref linkend="x-window-system"/>,
131 <ulink url="https://github.com/festvox/flite">Flite</ulink>,
132 <ulink url="https://www.quut.com/gsm/">GSM</ulink>,
133 <!--<ulink url="http://xhevc.com/en/hevc/decoder/download.jsp">HEVC/H.265</ulink>,-->
134 <!--<ulink url="http://www.ladspa.org/">LADSPA</ulink>,-->
135 <ulink url="https://tipok.org.ua/node/17">libaacplus</ulink>,
136 <ulink url="https://www.videolan.org/developers/libbluray.html">libbluray</ulink>,
137 <ulink url="https://github.com/cacalabs/libcaca">libcaca</ulink>,
138 <ulink url="https://gitlab.xiph.org/xiph/celt">libcelt</ulink>,
139 <ulink url="https://sourceforge.net/projects/libdc1394">libdc1394</ulink>,
140 <ulink url="https://www.videolan.org/developers/libdca.html">libdca</ulink>,
141 <ulink url="https://ieee1394.wiki.kernel.org/index.php/Libraries">libiec61883</ulink>,
142 <ulink url="https://github.com/dekkers/libilbc">libilbc</ulink>,
143 <ulink url="https://sourceforge.net/projects/modplug-xmms/">libmodplug</ulink>,
144 <ulink url="https://github.com/Distrotech/libnut">libnut</ulink> (Git checkout),
145 <ulink url="https://rtmpdump.mplayerhq.hu/">librtmp</ulink>,
146 <ulink url="https://www.libssh.org/">libssh</ulink>,
147 <!--<ulink url="https://xavs.sourceforge.net/">libxavs</ulink> (SVN checkout),-->
148 <ulink url="https://openal.org/">OpenAL</ulink>,
149 <ulink url="https://sourceforge.net/projects/opencore-amr">OpenCore AMR</ulink>,
150 <ulink url="https://github.com/Haivision/srt">Srt</ulink>,
151 <ulink url="https://sourceforge.net/projects/schrodinger/">Schroedinger</ulink>,
152 <ulink url="https://www.twolame.org/">TwoLAME</ulink>,
153 <ulink url="https://sourceforge.net/projects/opencore-amr/files/vo-aacenc/">vo-aaenc</ulink>,
154 <ulink url="https://sourceforge.net/projects/opencore-amr/files/vo-amrwbenc/">vo-amrwbenc</ulink>, and
155 <!--<ulink url="http://www.videolan.org/developers/x265.html">x265 (H.265/MPEG-H HEVC)</ulink>, and-->
156 <ulink url="https://zapping.sourceforge.net/ZVBI/">ZVBI</ulink>
157 </para>
158
159 <para condition="html" role="usernotes">
160 User Notes: <ulink url="&blfs-wiki;/ffmpeg"/>
161 </para>
162 </sect2>
163
164 <sect2 role="installation">
165 <title>Installation of FFmpeg</title>
166
167 <note>
168 <para>
169 Some harmless warnings may be output by the build process regarding
170 the HTML documentation. This is due to an incompatibilty with
171 Texinfo-7.0 and higher.
172 </para>
173 </note>
174
175 <para>
176 First, apply a patch that adds an API necessary for some packages to
177 build:
178 <!-- qtwebengine -->
179 </para>
180
181<screen><userinput remap="pre">patch -Np1 -i ../ffmpeg-&ffmpeg-version;-chromium_method-1.patch</userinput></screen>
182
183 <para>
184 Install <application>FFmpeg</application> by running the following
185 commands:
186 </para>
187
188<screen><userinput>sed -i 's/-lflite"/-lflite -lasound"/' configure &amp;&amp;
189
190./configure --prefix=/usr \
191 --enable-gpl \
192 --enable-version3 \
193 --enable-nonfree \
194 --disable-static \
195 --enable-shared \
196 --disable-debug \
197 --enable-libass \
198 --enable-libfdk-aac \
199 --enable-libfreetype \
200 --enable-libmp3lame \
201 --enable-libopus \
202 --enable-libtheora \
203 --enable-libvorbis \
204 --enable-libvpx \
205 --enable-libx264 \
206 --enable-libx265 \
207 --enable-openssl \
208 --docdir=/usr/share/doc/ffmpeg-&ffmpeg-version; &amp;&amp;
209
210make &amp;&amp;
211
212gcc tools/qt-faststart.c -o tools/qt-faststart</userinput></screen>
213
214 <para>
215 HTML documentation was built in the previous step. If you have
216 <xref linkend="texlive"/> installed and wish to build PDF and
217 Postscript versions of the documentation, issue the following commands:
218 </para>
219
220<!-- sed -i '$s/$/\n\n@bye/' doc/{git-howto,nut,fate}.texi &amp;&amp;
221sed -i '/machine:i386/ s/\\/@backslashchar{}/g' doc/platform.texi &amp;&amp; -->
222<screen remap="doc"><userinput>pushd doc &amp;&amp;
223for DOCNAME in `basename -s .html *.html`
224do
225 texi2pdf -b $DOCNAME.texi &amp;&amp;
226 texi2dvi -b $DOCNAME.texi &amp;&amp;
227
228 dvips -o $DOCNAME.ps \
229 $DOCNAME.dvi
230done &amp;&amp;
231popd &amp;&amp;
232unset DOCNAME</userinput></screen>
233
234 <para>
235 If you have <xref linkend="doxygen"/> installed
236 and you wish to build (if --disable-doc was
237 used) or rebuild the html documentation, issue:
238 </para>
239
240<screen remap="doc"><userinput>doxygen doc/Doxyfile</userinput></screen>
241
242 <para>
243 The fate-suite tests include comparisons with installed files, and should
244 not be run before the package is installed. Therefore, if you desire to
245 run them, instructions are given further below.
246 </para>
247
248 <para>
249 Now, as the <systemitem class="username">root</systemitem> user:
250 </para>
251
252<screen role="root"><userinput>make install &amp;&amp;
253
254install -v -m755 tools/qt-faststart /usr/bin &amp;&amp;
255install -v -m755 -d /usr/share/doc/ffmpeg-&ffmpeg-version; &amp;&amp;
256install -v -m644 doc/*.txt /usr/share/doc/ffmpeg-&ffmpeg-version;</userinput></screen>
257
258 <para>
259 If the PDF and Postscript documentation was built, issue the following
260 commands, as the <systemitem class="username">root</systemitem> user, to
261 install them:
262 </para>
263
264<screen role="root"
265 remap="doc"><userinput>install -v -m644 doc/*.pdf /usr/share/doc/ffmpeg-&ffmpeg-version; &amp;&amp;
266install -v -m644 doc/*.ps /usr/share/doc/ffmpeg-&ffmpeg-version;</userinput></screen>
267
268 <para>
269 If you used <command>doxygen</command> to manually create the API
270 documentation, install it by issuing the following commands
271 as the <systemitem class="username">root</systemitem> user:
272 </para>
273
274<screen role="root"
275 remap="doc"><userinput>install -v -m755 -d /usr/share/doc/ffmpeg-&ffmpeg-version;/api &amp;&amp;
276cp -vr doc/doxy/html/* /usr/share/doc/ffmpeg-&ffmpeg-version;/api &amp;&amp;
277find /usr/share/doc/ffmpeg-&ffmpeg-version;/api -type f -exec chmod -c 0644 \{} \; &amp;&amp;
278find /usr/share/doc/ffmpeg-&ffmpeg-version;/api -type d -exec chmod -c 0755 \{} \;</userinput></screen>
279
280 <para>
281 To properly test the installation you must have <xref linkend="rsync"/>
282 installed and follow the instructions for the <ulink
283 url="https://www.ffmpeg.org/fate.html"> FFmpeg Automated Testing
284 Environment</ulink> (FATE). First, about 1 GB of sample files used to
285 run FATE are downloaded with the command:
286 </para>
287
288<screen remap="test"><userinput>make fate-rsync SAMPLES=fate-suite/</userinput></screen>
289
290 <para>
291 The <filename class="directory">fate-suite</filename> directory is
292 created and the files are downloaded there. That command actually runs an
293 rsync command to obtain the sample files. You may want to compress and
294 keep this directory for testing again, for testing in another system,
295 or for when a new version of ffmpeg is released. Then, unpack the sample
296 files in the source directory, and run the <command>make fate-rsync
297 ...</command> command above to sync with the upstream repository. The
298 download size and time are drastically reduced by doing this. Estimated
299 values in "Package Information" do not include the download SBU. Some
300 samples may have been removed in newer versions, so in order to be sure
301 local and server fate samples are identical when you use previously
302 saved samples, run the following command:
303 </para>
304
305<screen role="nodump"><userinput>rsync -vrltLW --delete --timeout=60 --contimeout=60 \
306 rsync://fate-suite.ffmpeg.org/fate-suite/ fate-suite/</userinput></screen>
307
308 <para>
309 Next, execute FATE with the following commands (there are more than 3800
310 tests in the suite):
311 </para>
312
313<screen remap="test"><userinput>make fate THREADS=<replaceable>N</replaceable> SAMPLES=fate-suite/ | tee ../fate.log &amp;&amp;
314grep ^TEST ../fate.log | wc -l</userinput></screen>
315
316 <para>
317 where <replaceable>N</replaceable> is an integer,
318 <replaceable>N</replaceable> &le; number of cores in the system.
319 </para>
320
321 <para>
322 A successful run should return no errors or warnings, just a list of tests
323 and total amount at the end.
324 </para>
325
326 </sect2>
327
328 <sect2 role="commands">
329 <title>Command Explanations</title>
330
331 <para>
332 <command>sed -i ... configure</command>: This command adds the
333 <application>ALSA</application> library to the
334 <application>Flite</application> <envar>LDFLAGS</envar> variable and
335 enables the discovery of <application>Flite</application>.
336 </para>
337
338 <para>
339 <command>find ... ;</command>: Fixes permissions of documentation files
340 and directories.
341 </para>
342
343 <para>
344 <parameter>--enable-libfreetype</parameter>: Enables
345 <application>Freetype</application> support.
346 </para>
347
348 <para>
349 <parameter>--enable-gpl</parameter>: Enables the use of GPL code and
350 permits support for postprocessing, swscale and many other features.
351 </para>
352
353 <para>
354 <parameter>--enable-version3</parameter>: Enables the use of (L)GPL
355 version 3 code.
356 </para>
357
358 <para>
359 <parameter>--enable-nonfree</parameter>: Enables the use of nonfree code.
360 Note that the resulting libraries and binaries will be unredistributable.
361 </para>
362
363 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
364 href="../../xincludes/static-libraries.xml"/>
365
366 <para>
367 <parameter>--enable-shared</parameter>: Enables building shared
368 libraries, otherwise only static libraries are built and installed.
369 </para>
370
371 <para>
372 <parameter>--disable-debug</parameter>: Disables building debugging
373 symbols into the programs and libraries.
374 </para>
375
376 <!-- Library was removed in 5.0.1
377 <para>
378 <parameter>- -enable-avresample</parameter>: Enables
379 <xref linkend="transcode"/> to be compiled.
380 </para>
381 -->
382
383 <para>
384 <parameter>--enable-libass</parameter>: Enables ASS/SSA subtitle format
385 rendering via <filename class="libraryfile">libass</filename>.
386 </para>
387
388 <para>
389 <option>--enable-libdrm</option>: Use this switch if
390 <xref linkend="libdrm"/> is installed to build the <quote>kmsgrab</quote>
391 input module which is useful for screen capturing or streaming.
392 </para>
393
394 <para>
395 <parameter>--enable-libfdk-aac</parameter>: Enables AAC audio encoding via
396 <filename class="libraryfile">libfdk-aac</filename>.
397 </para>
398
399 <para>
400 <parameter>--enable-libmp3lame</parameter>: Enables MP3 audio encoding
401 via <filename class="libraryfile">libmp3lame</filename>.
402 </para>
403
404 <para>
405 <parameter>--enable-libvorbis --enable-libtheora</parameter>: Enables
406 Theora video encoding via <filename
407 class="libraryfile">libvorbis</filename> and <filename
408 class="libraryfile">libtheora</filename>.
409 </para>
410
411 <para>
412 <parameter>--enable-libvorbis --enable-libvpx</parameter>: Enables WebM
413 encoding via <filename class="libraryfile">libvorbis</filename> and
414 <filename class="libraryfile">libvpx</filename>.
415 </para>
416
417 <para>
418 <parameter>--enable-libx264</parameter>: Enables high-quality
419 H.264/MPEG-4 AVC encoding via <filename
420 class="libraryfile">libx264</filename>.
421 </para>
422
423 <para>
424 <parameter>--enable-libx265</parameter>: Enables high-quality
425 H.265/HEVC encoding via <filename
426 class="libraryfile">libx265</filename>.
427 </para>
428
429 <para>
430 <parameter>--enable-openssl</parameter>:
431 Enables HTTPS protocol for network streams.
432 </para>
433
434 <para>
435 <option>--enable-gnutls</option>: Use this option instead of
436 <parameter>--enable-openssl</parameter>, if you want to use
437 <application>GnuTLS</application> instead of
438 <application>OpenSSL</application> for HTTPS protocol.
439 </para>
440
441 <para>
442 <option>--disable-doc</option>: Disables building html documentation.
443 This is only needed if <xref linkend="doxygen"/> is installed and you
444 do not want to build the html documentation.
445 </para>
446
447 <para>
448 <option>--enable-libpulse</option>: Enables support for
449 <application>Pulseaudio</application> for audio output.
450 </para>
451
452 <para>
453 <command>gcc tools/qt-faststart.c -o tools/qt-faststart</command>: This
454 builds the <command>qt-faststart</command> program which can modify
455 QuickTime formatted movies (<filename class="extension">.mov</filename>
456 or <filename class="extension">.mp4</filename>) so that the header
457 information is located at the beginning of the file instead of the end.
458 This allows the movie file to begin playing before the entire file has
459 been downloaded.
460 </para>
461
462 <note>
463 <para>
464 Support for most of the dependency packages requires using options
465 passed to the <command>configure</command> script. View the output
466 from <command>./configure --help</command> for complete information
467 about enabling dependency packages.
468 </para>
469 </note>
470
471 </sect2>
472
473<!-- ffserver has been removed
474 <sect2 role="configuration">
475 <title>Configuring FFmpeg</title>
476
477 <sect3 id="ffmpeg-config">
478 <title>Config Files</title>
479
480 <para>
481 <filename>/etc/ffserver.conf</filename>
482 <filename>~/.ffmpeg/ffserver-config</filename>
483 </para>
484
485 <indexterm zone="ffmpeg ffmpeg-config">
486 <primary
487 sortas="e-AA.ffmpeg-ffserver-config">~/.ffmpeg/ffserver-config</primary>
488 </indexterm>
489
490 <indexterm zone="ffmpeg ffmpeg-config">
491 <primary sortas="e-etc-ffserver.conf">/etc/ffserver.conf</primary>
492 </indexterm>
493
494 <para>
495 You'll find a sample <command>ffserver</command> configuration file at
496 <filename>doc/ffserver.conf</filename> in the source tree.
497 </para>
498
499 </sect3>
500
501 </sect2>
502 -->
503
504 <sect2 role="content">
505 <title>Contents</title>
506
507 <segmentedlist>
508 <segtitle>Installed Programs</segtitle>
509 <segtitle>Installed Libraries</segtitle>
510 <segtitle>Installed Directories</segtitle>
511
512 <seglistitem>
513 <seg>
514 ffmpeg, ffplay, ffprobe, <!--ffserver,--> and qt-faststart
515 </seg>
516 <seg>
517 libavcodec.so, libavdevice.so, libavfilter.so,
518 libavformat.so, libavutil.so, libpostproc.so,
519 libswresample.so, and libswscale.so
520 </seg>
521 <seg>
522 /usr/include/libav{codec,device,filter,format,util},
523 /usr/include/libpostproc,
524 /usr/include/libsw{resample,scale},
525 /usr/share/doc/ffmpeg-&ffmpeg-version;, and
526 /usr/share/ffmpeg
527 </seg>
528 </seglistitem>
529 </segmentedlist>
530
531 <variablelist>
532 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
533 <?dbfo list-presentation="list"?>
534 <?dbhtml list-presentation="table"?>
535
536 <varlistentry id="ffmpeg-prog">
537 <term><command>ffmpeg</command></term>
538 <listitem>
539 <para>
540 is a command-line tool to convert video files, network streams and
541 input from a TV card to several video formats
542 </para>
543 <indexterm zone="ffmpeg ffmpeg-prog">
544 <primary sortas="b-ffmpeg">ffmpeg</primary>
545 </indexterm>
546 </listitem>
547 </varlistentry>
548
549 <varlistentry id="ffplay">
550 <term><command>ffplay</command></term>
551 <listitem>
552 <para>
553 is a very simple and portable media player using the
554 <filename>ffmpeg</filename> libraries and the SDL library
555 </para>
556 <indexterm zone="ffmpeg ffplay">
557 <primary sortas="b-ffplay">ffplay</primary>
558 </indexterm>
559 </listitem>
560 </varlistentry>
561
562 <varlistentry id="ffprobe">
563 <term><command>ffprobe</command></term>
564 <listitem>
565 <para>
566 gathers information from multimedia streams and prints it in a human
567 and machine-readable fashion
568 </para>
569 <indexterm zone="ffmpeg ffprobe">
570 <primary sortas="b-ffprobe">ffprobe</primary>
571 </indexterm>
572 </listitem>
573 </varlistentry>
574
575<!-- Not found in 4.3.2
576 <varlistentry id="ffserver">
577 <term><command>ffserver</command></term>
578 <listitem>
579 <para>
580 is a streaming server for everything that <command>ffmpeg</command>
581 could use as input (files, streams, TV card input, webcam, etc)
582 </para>
583 <indexterm zone="ffmpeg ffserver">
584 <primary sortas="b-ffserver">ffserver</primary>
585 </indexterm>
586 </listitem>
587 </varlistentry>
588-->
589 <varlistentry id="qt-faststart">
590 <term><command>qt-faststart</command></term>
591 <listitem>
592 <para>
593 moves the index file to the front of quicktime (mov/mp4) videos
594 </para>
595 <indexterm zone="ffmpeg qt-faststart">
596 <primary sortas="b-qt-faststart">qt-faststart</primary>
597 </indexterm>
598 </listitem>
599 </varlistentry>
600
601 <varlistentry id="libavcodec">
602 <term><filename class="libraryfile">libavcodec.so</filename></term>
603 <listitem>
604 <para>
605 is a library containing the <application>FFmpeg</application> codecs
606 (both encoding and decoding)
607 </para>
608 <indexterm zone="ffmpeg libavcodec">
609 <primary sortas="c-libavcodec">libavcodec.so</primary>
610 </indexterm>
611 </listitem>
612 </varlistentry>
613
614 <varlistentry id="libavdevice">
615 <term><filename class="libraryfile">libavdevice.so</filename></term>
616 <listitem>
617 <para>
618 is the <application>FFmpeg</application> device handling library
619 </para>
620 <indexterm zone="ffmpeg libavdevice">
621 <primary sortas="c-libavdevice">libavdevice.so</primary>
622 </indexterm>
623 </listitem>
624 </varlistentry>
625
626 <varlistentry id="libavfilter">
627 <term><filename class="libraryfile">libavfilter.so</filename></term>
628 <listitem>
629 <para>
630 is a library of filters that can alter video or audio between the
631 decoder and the encoder (or output)
632 </para>
633 <indexterm zone="ffmpeg libavfilter">
634 <primary sortas="c-libavfilter">libavfilter.so</primary>
635 </indexterm>
636 </listitem>
637 </varlistentry>
638
639 <varlistentry id="libavformat">
640 <term><filename class="libraryfile">libavformat.so</filename></term>
641 <listitem>
642 <para>
643 is a library containing the file formats handling (mux and demux
644 code for several formats) used by <command>ffplay</command> as well
645 as allowing the generation of audio or video streams
646 </para>
647 <indexterm zone="ffmpeg libavformat">
648 <primary sortas="c-libavformat">libavformat.so</primary>
649 </indexterm>
650 </listitem>
651 </varlistentry>
652
653 <varlistentry id="libavresample">
654 <term><filename class="libraryfile">libavresample.so</filename></term>
655 <listitem>
656 <para>
657 is a library containing functions for resampling audio and video.
658 </para>
659 <indexterm zone="ffmpeg libavresample">
660 <primary sortas="c-libavresample">libavresample</primary>
661 </indexterm>
662 </listitem>
663 </varlistentry>
664
665 <varlistentry id="libavutil">
666 <term><filename class="libraryfile">libavutil.so</filename></term>
667 <listitem>
668 <para>
669 is the <application>FFmpeg</application> utility library
670 </para>
671 <indexterm zone="ffmpeg libavutil">
672 <primary sortas="c-libavutil">libavutil.so</primary>
673 </indexterm>
674 </listitem>
675 </varlistentry>
676
677 <varlistentry id="libpostproc">
678 <term><filename class="libraryfile">libpostproc.so</filename></term>
679 <listitem>
680 <para>
681 is the <application>FFmpeg</application> post processing library
682 </para>
683 <indexterm zone="ffmpeg libpostproc">
684 <primary sortas="c-libpostproc">libpostproc.so</primary>
685 </indexterm>
686 </listitem>
687 </varlistentry>
688
689 <varlistentry id="libswresample">
690 <term><filename class="libraryfile">libswresample.so</filename></term>
691 <listitem>
692 <para>
693 is the <application>FFmpeg</application> audio rescaling library,
694 it contains functions for converting audio sample formats
695 </para>
696 <indexterm zone="ffmpeg libswresample">
697 <primary sortas="c-libswresample">libswresample.so</primary>
698 </indexterm>
699 </listitem>
700 </varlistentry>
701
702 <varlistentry id="libswscale">
703 <term><filename class="libraryfile">libswscale.so</filename></term>
704 <listitem>
705 <para>
706 is the <application>FFmpeg</application> image rescaling library
707 </para>
708 <indexterm zone="ffmpeg libswscale">
709 <primary sortas="c-libswscale">libswscale.so</primary>
710 </indexterm>
711 </listitem>
712 </varlistentry>
713
714 </variablelist>
715
716 </sect2>
717
718</sect1>
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