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--------------------------------------------------------------------------
- The Xiph.org Foundation's libtheora 1.1
--------------------------------------------------------------------------
-
-*** What is Theora?
-
-Theora is Xiph.Org's first publicly released video codec, intended
-for use within the Foundation's Ogg multimedia streaming system.
-Theora is derived directly from On2's VP3 codec, adds new features
-while allow it a longer useful lifetime as an competitive codec.
-
-The 1.0 release decoder supported all the new features, but the
-encoder is nearly identical to the VP3 code.
-
-The 1.1 release features a completely rewritten encoder, offering
-better performance and compression, and making more complete use
-of the format's feature set. Files produced by both encoders can
-be decoded by either release.
-
-*** Where is Theora?
-
-Theora's main site is www.theora.org. Theora and related libraries
-can be gotten from www.theora.org or the main Xiph.Org site at
-www.xiph.org. Development source is kept in an open subversion
-repository, see http://theora.org/svn/ for instructions.
-
--------------------------------------------------------------------------
-Getting started with the code
--------------------------------------------------------------------------
-
-*** What do I need to build the source?
-
-Requirements summary:
-
- For libtheora:
-
- libogg 1.1 or newer.
-
- For example encoder:
-
- as above,
-
- libvorbis and libvorbisenc 1.0.1 or newer.
-
- For creating a source distribution package:
-
- as above,
-
- Doxygen to build the API documentation,
- pdflatex and fig2dev to build the format specification
- (transfig package in Ubuntu).
-
- For the player only:
-
- as above,
-
- SDL (Simple Direct media Layer) libraries and headers,
- OSS audio driver and development headers.
-
-The provided build system is the GNU automake/autoconf system, and
-the main library, libtheora, should already build smoothly on any
-system. Failure of libtheora to build on a GNU-enabled system is
-considered a bug; please report problems to theora-dev@xiph.org.
-
-Windows build support is included in the win32 directory.
-
-Project files for Apple XCode are included in the macosx directory.
-
-There is also an experimental scons build.
-
-*** How do I use the sample encoder?
-
-The sample encoder takes raw video in YUV4MPEG2 format, as used by
-lavtools, mjpeg-tools and other packages. The encoder expects audio,
-if any, in a separate wave WAV file. Try 'encoder_example -h' for a
-complete list of options.
-
-An easy way to get raw video and audio files is to use MPlayer as an
-export utility. The options " -ao pcm -vo yuv4mpeg " will export a
-wav file named audiodump.wav and a YUV video file in the correct
-format for encoder_example as stream.yuv. Be careful when exporting
-video alone; MPlayer may drop frames to 'keep up' with the audio
-timer. The example encoder can't properly synchronize input audio and
-video file that aren't in sync to begin with.
-
-The encoder will also take video or audio on stdin if '-' is specified
-as the input file name.
-
-There is also a 'png2theora' example which accepts a set of image
-files in that format.
-
-*** How do I use the sample player?
-
-The sample player takes an Ogg file on standard in; the file may be
-audio alone, video alone or video with audio.
-
-*** What other tools are available?
-
-The programs in the examples directory are intended as tutorial source
-for developers using the library. As such they sacrifice features and
-robustness in the interests of comprehension and should not be
-considered serious applications.
-
-If you're wanting to just use theora, consider the programs linked
-from http://www.theora.org/. There is playback support in a number
-of common free players, and plugins for major media frameworks.
-Jan Gerber's ffmpeg2theora is an excellent encoding front end.
-
--------------------------------------------------------------------------
-Troubleshooting the build process
--------------------------------------------------------------------------
-
-*** Compile error, such as:
-
-encoder_internal.h:664: parse error before `ogg_uint16_t'
-
-This means you have version of libogg prior to 1.1. A *complete* new Ogg
-install, libs and headers is needed.
-
-Also be sure that there aren't multiple copies of Ogg installed in
-/usr and /usr/local; an older one might be first on the search path
-for libs and headers.
-
-*** Link error, such as:
-
-undefined reference to `oggpackB_stream'
-
-See above; you need libogg 1.1 or later.
-
-*** Link error, such as:
-
-undefined reference to `vorbis_granule_time'
-
-You need libvorbis and libvorbisenc from the 1.0.1 release or later.
-
-*** Link error, such as:
-
-/usr/lib/libSDL.a(SDL_esdaudio.lo): In function `ESD_OpenAudio':
-SDL_esdaudio.lo(.text+0x25d): undefined reference to `esd_play_stream'
-
-Be sure to use an SDL that's built to work with OSS. If you use an
-SDL that is also built with ESD and/or ALSA support, it will try to
-suck in all those extra libraries at link time too. That will only
-work if the extra libraries are also installed.
-
-*** Link warning, such as:
-
-libtool: link: warning: library `/usr/lib/libogg.la' was moved.
-libtool: link: warning: library `/usr/lib/libogg.la' was moved.
-
-Re-run theora/autogen.sh after an Ogg or Vorbis rebuild/reinstall
-