Revision 47404f9f doc/ffmpeg-doc.texi

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doc/ffmpeg-doc.texi
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@end itemize
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@chapter external libraries
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FFmpeg can be hooked up with a number of external libraries to add support
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for more formats.
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@section AMR
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AMR comes in two different flavors, WB and NB. FFmpeg can make use of the
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AMR WB (floating-point mode) and the AMR NB (both floating-point and
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fixed-point mode) reference decoders and encoders.
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@itemize
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@item For AMR WB floating-point download TS26.204 V5.1.0 from
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@url{http://www.3gpp.org/ftp/Specs/archive/26_series/26.204/26204-510.zip}
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and extract the source to @file{libavcodec/amrwb_float/}.
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@item For AMR NB floating-point download TS26.104 REL-5 V5.1.0 from
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@url{http://www.3gpp.org/ftp/Specs/archive/26_series/26.104/26104-510.zip}
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and extract the source to @file{libavcodec/amr_float/}.
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If you try this on Alpha, you may need to change @code{Word32} to
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@code{int} in @file{amr/typedef.h}.
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@item For AMR NB fixed-point download TS26.073 REL-5 V5.1.0 from
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@url{http://www.3gpp.org/ftp/Specs/archive/26_series/26.073/26073-510.zip}
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and extract the source to @file{libavcodec/amr}.
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You must also add @code{-DMMS_IO} and remove @code{-pedantic-errors}
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to/from @code{CFLAGS} in @file{libavcodec/amr/makefile}, i.e.
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``@code{CFLAGS = -Wall -I. \$(CFLAGS_\$(MODE)) -D\$(VAD) -DMMS_IO}''.
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@end itemize
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@chapter Supported File Formats and Codecs
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You can use the @code{-formats} option to have an exhaustive list.

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