optional_depends  "X86-ASSEMBLER" \
                  "" \
                  "--disable-yasm" \
                  "for some assembler optimizations"  &&

optional_depends  celt \
                  "--enable-libcelt" \
                  "" \
                  "for celt codec support via libcelt"  &&
optional_depends  frei0r-plugins \
                  "--enable-frei0r" \
                  "" \
                  "use frei0r for video filtering"  &&

if [[ $FFMPEG_RELEASE == stable ]]; then

optional_depends  gnutls \
                  "--enable-gnutls" \
                  "" \
                  "support for crypto"  &&
optional_depends  libass \
                  "--enable-libass" \
                  "" \
                  "use libass for subtitle rendering"  &&
optional_depends  libmodplug \
                  "--enable-libmodplug" \
                  "" \
                  "enable libmodplug support for playing mod files" &&
optional_depends  libvpx \
                  "--enable-libvpx" \
                  "" \
                  "VP8 support"

else

optional_depends  dirac \
                  "--enable-libdirac" \
                  "" \
                  "for dirac encoder support via libdirac"

fi &&

optional_depends  schroedinger \
                  "--enable-libschroedinger" \
                  "" \
                  "for dirac encoder/decoder support via libschroedinger"  &&
optional_depends  speex \
                  "--enable-libspeex" \
                  "" \
                  "support for the Speex codec"  &&
optional_depends  openjpeg \
                  "--enable-libopenjpeg" \
                  "--disable-libopenjpeg" \
                  "support for JPEG 2000"  &&
optional_depends  "lame"              \
                  "--enable-libmp3lame"  \
                  ""                  \
                  "for mp3 encoding via libmp3lame"  &&
optional_depends  "libvorbis"        \
                  "--enable-libvorbis"  \
                  ""                 \
                  "for ogg/vorbis support"  &&
optional_depends  "imlib2"         \
                  ""               \
                  ""               \
                  "for imlib2 support"  &&
optional_depends  "freetype2"  \
                  ""           \
                  ""           \
                  "for a text render plugin"  &&
optional_depends  "xvid"           \
                  "--enable-libxvid"  \
                  ""               \
                  "for xvid support"  &&
optional_depends  sdl                 \
                  ""                  \
                  "--disable-ffplay"  \
                  "for ffplay video player" &&
optional_depends  faac                \
                  "--enable-libfaac --enable-nonfree"  \
                  ""                  \
                  "support for faac"        &&
optional_depends  libtheora            \
                  "--enable-libtheora" \
                  ""                   \
                  "theora codec"            &&
optional_depends  x264                \
                  "--enable-libx264"  \
                  ""                  \
                  "h.264 encoder"
