details), you must upgrade FFmpeg'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. FFmpeg 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, Codecs or Features
@item IEC61937 encapsulation @tab X @tab X
@item IFF @tab @tab X
@tab Interchange File Format
+@item iLBC @tab X @tab X
@item Interplay MVE @tab @tab X
@tab Format used in various Interplay computer games.
@item IV8 @tab @tab X
@tab Multimedia format used by many games.
@item SMJPEG @tab X @tab X
@tab Used in certain Loki game ports.
+@item Smush @tab @tab X
+ @tab Multimedia format used in some LucasArts games.
@item Sony OpenMG (OMA) @tab X @tab X
@tab Audio format used in Sony Sonic Stage and Sony Vegas.
@item Sony PlayStation STR @tab @tab X
@item LCL (LossLess Codec Library) MSZH @tab @tab X
@item LCL (LossLess Codec Library) ZLIB @tab E @tab E
@item LOCO @tab @tab X
+@item LucasArts Smush @tab @tab X
+ @tab Used in LucasArts games.
@item lossless MJPEG @tab X @tab X
+@item Microsoft ATC Screen @tab @tab X
+ @tab Also known as Microsoft Screen 3.
@item Microsoft RLE @tab @tab X
+@item Microsoft Screen 1 @tab @tab X
+ @tab Also known as Windows Media Video V7 Screen.
@item Microsoft Video 1 @tab @tab X
@item Mimic @tab @tab X
@tab Used in MSN Messenger Webcam streams.
@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
@item TrueHD @tab @tab X
@tab Used in HD-DVD and Blu-Ray discs.
@item TwinVQ (VQF flavor) @tab @tab X
+@item VIMA @tab @tab X
+ @tab Used in LucasArts SMUSH animations.
@item Vorbis @tab E @tab X
@tab A native but very primitive encoder exists.
@item WavPack @tab @tab X
@item JACOsub @tab X @tab X @tab @tab X
@item MicroDVD @tab X @tab X @tab @tab X
@item PGS @tab @tab @tab @tab X
+@item RealText @tab @tab X @tab @tab X
+@item SAMI @tab @tab X @tab @tab X
@item SubRip (SRT) @tab X @tab X @tab X @tab X
@item XSUB @tab @tab @tab X @tab X
@end multitable