Revision c0b1bc8d

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CREDITS
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This file contains the names of some of the people who have contributed to
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Libav/FFmpeg. The names are sorted alphabetically by last name.  As this file is
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FFmpeg. The names are sorted alphabetically by last name.  As this file is
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currently quite outdated and git serves as a much better tool for determining
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authorship, it remains here for historical reasons only.
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Doxyfile
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# The PROJECT_NAME tag is a single word (or a sequence of words surrounded
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# by quotes) that should identify the project.
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PROJECT_NAME           = Libav
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PROJECT_NAME           = FFmpeg
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# The PROJECT_NUMBER tag can be used to enter a project or revision number.
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# This could be handy for archiving the generated documentation or
INSTALL
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1) Type './configure' to create the configuration. A list of configure
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options is printed by running 'configure --help'.
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'configure' can be launched from a directory different from the Libav
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'configure' can be launched from a directory different from the FFmpeg
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sources to build the objects out of tree. To do this, use an absolute
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path when launching 'configure', e.g. '/libavdir/libav/configure'.
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path when launching 'configure', e.g. '/ffmpegdir/ffmpeg/configure'.
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2) Then type 'make' to build Libav. GNU Make 3.81 or later is required.
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2) Then type 'make' to build FFmpeg. GNU Make 3.81 or later is required.
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3) Type 'make install' to install all binaries and libraries you built.
LICENSE
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Libav:
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FFmpeg:
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-------
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Most files in Libav are under the GNU Lesser General Public License version 2.1
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Most files in FFmpeg are under the GNU Lesser General Public License version 2.1
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or later (LGPL v2.1+). Read the file COPYING.LGPLv2.1 for details. Some other
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files have MIT/X11/BSD-style licenses. In combination the LGPL v2.1+ applies to
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Libav.
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FFmpeg.
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Some optional parts of Libav are licensed under the GNU General Public License
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Some optional parts of FFmpeg are licensed under the GNU General Public License
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version 2 or later (GPL v2+). See the file COPYING.GPLv2 for details. None of
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these parts are used by default, you have to explicitly pass --enable-gpl to
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configure to activate them. In this case, Libav's license changes to GPL v2+.
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configure to activate them. In this case, FFmpeg's license changes to GPL v2+.
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Specifically, the GPL parts of Libav are
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Specifically, the GPL parts of FFmpeg are
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- libpostproc
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- optional x86 optimizations in the files
......
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-------------------
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Some external libraries, e.g. libx264, are under GPL and can be used in
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conjunction with Libav. They require --enable-gpl to be passed to configure
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conjunction with FFmpeg. They require --enable-gpl to be passed to configure
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as well.
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The OpenCORE external libraries are under the Apache License 2.0. That license
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is incompatible with the LGPL v2.1 and the GPL v2, but not with version 3 of
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those licenses. So to combine the OpenCORE libraries with Libav, the license
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those licenses. So to combine the OpenCORE libraries with FFmpeg, the license
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version needs to be upgraded by passing --enable-version3 to configure.
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The nonfree external library libfaac can be hooked up in Libav. You need to
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The nonfree external library libfaac can be hooked up in FFmpeg. You need to
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pass --enable-nonfree to configure to enable it. Employ this option with care
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as Libav then becomes nonfree and unredistributable.
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as FFmpeg then becomes nonfree and unredistributable.
README
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Libav README
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FFmpeg README
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-------------
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1) Documentation
configure
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#!/bin/sh
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#
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# Libav configure script
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# FFmpeg configure script
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#
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# Copyright (c) 2000-2002 Fabrice Bellard
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# Copyright (c) 2005-2008 Diego Biurrun
......
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    echo "No compatible shell script interpreter found."
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    echo "This configure script requires a POSIX-compatible shell"
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    echo "such as bash or ksh."
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    echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
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    echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
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    echo "Instead, install a working POSIX-compatible shell."
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    echo "Disabling this configure test will create a broken Libav."
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    echo "Disabling this configure test will create a broken FFmpeg."
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    if test "$BASH_VERSION" = '2.04.0(1)-release'; then
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        echo "This bash version ($BASH_VERSION) is broken on your platform."
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        echo "Upgrade to a later version if available."
......
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  --enable-sram            allow use of on-chip SRAM
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  --disable-symver         disable symbol versioning
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Developer options (useful when working on Libav itself):
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Developer options (useful when working on FFmpeg itself):
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  --disable-debug          disable debugging symbols
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  --enable-debug=LEVEL     set the debug level [$debuglevel]
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  --disable-optimizations  disable compiler optimizations
......
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If you think configure made a mistake, make sure you are using the latest
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version from Git.  If the latest version fails, report the problem to the
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libav-user@libav.org mailing list or IRC #libav on irc.freenode.net.
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ffmpeg-user@mplayerhq.hu mailing list or IRC #ffmpeg on irc.freenode.net.
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EOF
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    if disabled logging; then
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        cat <<EOF
......
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    openbsd)
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        enable malloc_aligned
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        # On OpenBSD 4.5. the compiler does not use PIC unless
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        # explicitly using -fPIC. Libav builds fine without PIC,
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        # explicitly using -fPIC. FFmpeg builds fine without PIC,
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        # however the generated executable will not do anything
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        # (simply quits with exit-code 1, no crash, no output).
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        # Thus explicitly enable PIC here.
......
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EOF
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}
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pkgconfig_generate libavutil "Libav utility library" "$LIBAVUTIL_VERSION"
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pkgconfig_generate libavcodec "Libav codec library" "$LIBAVCODEC_VERSION" "$extralibs"
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pkgconfig_generate libavformat "Libav container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
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pkgconfig_generate libavdevice "Libav device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
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pkgconfig_generate libavfilter "Libav video filtering library" "$LIBAVFILTER_VERSION" "$extralibs"
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pkgconfig_generate libpostproc "Libav post processing library" "$LIBPOSTPROC_VERSION"
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pkgconfig_generate libswscale "Libav image rescaling library" "$LIBSWSCALE_VERSION" "" "libavutil = $LIBAVUTIL_VERSION"
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pkgconfig_generate libavutil "FFmpeg utility library" "$LIBAVUTIL_VERSION"
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pkgconfig_generate libavcodec "FFmpeg codec library" "$LIBAVCODEC_VERSION" "$extralibs"
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pkgconfig_generate libavformat "FFmpeg container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
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pkgconfig_generate libavdevice "FFmpeg device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
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pkgconfig_generate libavfilter "FFmpeg video filtering library" "$LIBAVFILTER_VERSION" "$extralibs"
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pkgconfig_generate libpostproc "FFmpeg post processing library" "$LIBPOSTPROC_VERSION"
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pkgconfig_generate libswscale "FFmpeg image rescaling library" "$LIBSWSCALE_VERSION" "" "libavutil = $LIBAVUTIL_VERSION"

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