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-rw-r--r--doc/general.texi13
1 files changed, 13 insertions, 0 deletions
diff --git a/doc/general.texi b/doc/general.texi
index 9a4746a570..0c600ce948 100644
--- a/doc/general.texi
+++ b/doc/general.texi
@@ -85,6 +85,17 @@ x264 is under the GNU Public License Version 2 or later
details), you must upgrade Libav's license to GPL in order to use it.
@end float
+@section libilbc
+
+iLBC is a narrowband speech codec that has been made freely available
+by Google as part of the WebRTC project. libilbc is a packaging friendly
+copy of the iLBC codec. Libav can make use of the libilbc library for
+iLBC encoding and decoding.
+
+Go to @url{https://github.com/dekkers/libilbc} and follow the instructions for
+installing the library. Then pass @code{--enable-libilbc} to configure to
+enable it.
+
@chapter Supported File Formats and Codecs
@@ -707,6 +718,8 @@ following image formats are supported:
@item GSM Microsoft variant @tab E @tab X
@tab encoding supported through external library libgsm
@item IAC (Indeo Audio Coder) @tab @tab X
+@item iLBC (Internet Low Bitrate Codec) @tab E @tab E
+ @tab encoding and decoding supported through external library libilbc
@item IMC (Intel Music Coder) @tab @tab X
@item MACE (Macintosh Audio Compression/Expansion) 3:1 @tab @tab X
@item MACE (Macintosh Audio Compression/Expansion) 6:1 @tab @tab X