instructions for installing the library.
Then pass @code{--enable-libtwolame} to configure to enable it.
+@section libcodec2 / codec2 general
+
+FFmpeg can make use of libcodec2 for codec2 encoding and decoding.
+There is currently no native decoder, so libcodec2 must be used for decoding.
+
+Go to @url{http://freedv.org/}, download "Codec 2 source archive".
+Build and install using CMake. Debian users can install the libcodec2-dev package instead.
+Once libcodec2 is installed you can pass @code{--enable-libcodec2} to configure to enable it.
+
+The easiest way to use codec2 is with .c2 files, since they contain the mode information required for decoding.
+To encode such a file, use a .c2 file extension and give the libcodec2 encoder the -mode option:
+@code{ffmpeg -i input.wav -mode 700C output.c2}.
+Playback is as simple as @code{ffplay output.c2}.
+For a list of supported modes, run @code{ffmpeg -h encoder=libcodec2}.
+Raw codec2 files are also supported.
+To make sense of them the mode in use needs to be specified as a format option:
+@code{ffmpeg -f codec2raw -mode 1300 -i input.raw output.wav}.
+
@section libvpx
FFmpeg can make use of the libvpx library for VP8/VP9 encoding.
with the @code{--enable-libmfx} option and @code{pkg-config} needs to be able to
locate the dispatcher's @code{.pc} files.
+@section AMD VCE
+
+FFmpeg can use the AMD Advanced Media Framework library for accelerated H.264
+and HEVC encoding on VCE enabled hardware under Windows.
+
+To enable support you must obtain the AMF framework header files from
+@url{https://github.com/GPUOpen-LibrariesAndSDKs/AMF.git}.
+
+Create an @code{AMF/} directory in the system include path.
+Copy the contents of @code{AMF/amf/public/include/} into that directory.
+Then configure FFmpeg with @code{--enable-amf}.
+
@chapter Supported File Formats, Codecs or Features
@item raw AMR-NB @tab @tab X
@item raw AMR-WB @tab @tab X
@item raw aptX @tab X @tab X
+@item raw aptX HD @tab X @tab X
@item raw Chinese AVS video @tab X @tab X
@item raw CRI ADX @tab X @tab X
@item raw Dirac @tab X @tab X
@tab QuickTime fourcc 'alac'
@item aptX @tab X @tab X
@tab Used in Bluetooth A2DP
+@item aptX HD @tab X @tab X
+ @tab Used in Bluetooth A2DP
@item ATRAC1 @tab @tab X
@item ATRAC3 @tab @tab X
@item ATRAC3+ @tab @tab X
@tab Used in Bink and Smacker files in many games.
@item CELT @tab @tab E
@tab decoding supported through external library libcelt
+@item codec2 @tab E @tab E
+ @tab en/decoding supported through external library libcodec2
@item Delphine Software International CIN audio @tab @tab X
@tab Codec used in Delphine Software International games.
@item Digital Speech Standard - Standard Play mode (DSS SP) @tab @tab X