firefish ffmpeg on gentoo

beck@Kataomoi ~ $ ffmpeg -filters
ffmpeg version N-71100-g0245abc Copyright (c) 2000-2015 the FFmpeg developers
  built with gcc 4.8.4 (Funtoo 4.8.4)
  configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandir=/usr/share/man --enable-shared --cc=x86_64-pc-linux-gnu-gcc --cxx=x86_64-pc-linux-gnu-g++ --ar=x86_64-pc-linux-gnu-ar --optflags='-march=native -O2 -pipe' --extra-cflags='-march=native -O2 -pipe' --extra-cxxflags='-march=native -O2 -pipe' --disable-static --enable-avfilter --enable-avresample --disable-stripping --enable-version3 --enable-nonfree --disable-indev=oss --disable-indev=jack --disable-outdev=oss --disable-outdev=sdl --enable-bzlib --disable-runtime-cpudetect --disable-debug --disable-doc --disable-gnutls --enable-gpl --enable-hardcoded-tables --enable-iconv --enable-lzma --enable-network --disable-openssl --enable-postproc --disable-libsmbclient --disable-ffplay --disable-vaapi --disable-vdpau --enable-xlib --disable-libxcb --disable-libxcb-shm --disable-libxcb-xfixes --enable-zlib --enable-libcdio --disable-libiec61883 --enable-libdc1394 --enable-libcaca --disable-openal --enable-opengl --disable-libv4l2 --disable-libpulse --disable-libopencore-amrwb --disable-libopencore-amrnb --disable-libfdk-aac --enable-libopenjpeg --enable-libbluray --disable-libcelt --disable-libgme --disable-libgsm --disable-libmodplug --disable-libopus --disable-libquvi --disable-librtmp --disable-libssh --disable-libschroedinger --disable-libspeex --enable-libvorbis --enable-libvpx --disable-libzvbi --disable-libbs2b --disable-libflite --disable-frei0r --disable-libfribidi --enable-fontconfig --disable-ladspa --enable-libass --enable-libfreetype --disable-libsoxr --enable-pthreads --enable-libvo-aacenc --disable-libvo-amrwbenc --enable-libmp3lame --disable-libaacplus --enable-libfaac --enable-libtheora --enable-libtwolame --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-x11grab --disable-amd3dnow --disable-amd3dnowext --disable-avx --disable-avx2 --disable-fma3 --disable-fma4 --disable-sse3 --disable-ssse3 --disable-sse4 --disable-sse42 --disable-xop --cpu=host
  libavutil      54. 20.101 / 54. 20.101
  libavcodec     56. 30.100 / 56. 30.100
  libavformat    56. 26.101 / 56. 26.101
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 13.101 /  5. 13.101
  libavresample   2.  1.  0 /  2.  1.  0
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  1.100 /  1.  1.100
  libpostproc    53.  3.100 / 53.  3.100
Filters:
  T.. = Timeline support
  .S. = Slice threading
  ..C = Commmand support
  A = Audio input/output
  V = Video input/output
  N = Dynamic number and/or type of input/output
  | = Source or sink filter
 T.. adelay           A->A       Delay one or more audio channels.
 ... aecho            A->A       Add echoing to the audio.
 ... aeval            A->A       Filter audio signal according to a specified expression.
 T.. afade            A->A       Fade in/out input audio.
 ... aformat          A->A       Convert the input audio to one of the specified formats.
 ... ainterleave      N->A       Temporally interleave audio inputs.
 ... allpass          A->A       Apply a two-pole all-pass filter.
 ... amerge           N->A       Merge two or more audio streams into a single multi-channel stream.
 ... amix             N->A       Audio mixing.
 ... anull            A->A       Pass the source unchanged to the output.
 T.. apad             A->A       Pad audio with silence.
 ... aperms           A->A       Set permissions for the output audio frame.
 ... aphaser          A->A       Add a phasing effect to the audio.
 ... aresample        A->A       Resample audio data.
 ... aselect          A->N       Select audio frames to pass in output.
 ... asendcmd         A->A       Send commands to filters.
 ... asetnsamples     A->A       Set the number of samples for each output audio frames.
 ... asetpts          A->A       Set PTS for the output audio frame.
 ... asetrate         A->A       Change the sample rate without altering the data.
 ... asettb           A->A       Set timebase for the audio output link.
 ... ashowinfo        A->A       Show textual information for each audio frame.
 ... asplit           A->N       Pass on the audio input to N audio outputs.
 ... astats           A->A       Show time domain statistics about audio frames.
 ... astreamsync      AA->AA     Copy two streams of audio data in a configurable order.
 ... asyncts          A->A       Sync audio data to timestamps
 ..C atempo           A->A       Adjust audio tempo.
 ... atrim            A->A       Pick one continuous section from the input, drop the rest.
 ... bandpass         A->A       Apply a two-pole Butterworth band-pass filter.
 ... bandreject       A->A       Apply a two-pole Butterworth band-reject filter.
 ... bass             A->A       Boost or cut lower frequencies.
 ... biquad           A->A       Apply a biquad IIR filter with the given coefficients.
 ... channelmap       A->A       Remap audio channels.
 ... channelsplit     A->N       Split audio into per-channel streams.
 ... compand          A->A       Compress or expand audio dynamic range.
 T.. dcshift          A->A       Apply a DC shift to the audio.
 ... earwax           A->A       Widen the stereo image.
 ... ebur128          A->N       EBU R128 scanner.
 ... equalizer        A->A       Apply two-pole peaking equalization (EQ) filter.
 ... flanger          A->A       Apply a flanging effect to the audio.
 ... highpass         A->A       Apply a high-pass filter with 3dB point frequency.
 ... join             N->A       Join multiple audio streams into multi-channel output.
 ... lowpass          A->A       Apply a low-pass filter with 3dB point frequency.
 ... pan              A->A       Remix channels with coefficients (panning).
 ... replaygain       A->A       ReplayGain scanner.
 ... resample         A->A       Audio resampling and conversion.
 ... silencedetect    A->A       Detect silence.
 ... silenceremove    A->A       Remove silence.
 ... treble           A->A       Boost or cut upper frequencies.
 T.C volume           A->A       Change input volume.
 ... volumedetect     A->A       Detect audio volume.
 ... aevalsrc         |->A       Generate an audio signal generated by an expression.
 ... anullsrc         |->A       Null audio source, return empty audio frames.
 ... sine             |->A       Generate sine wave audio signal.
 ... anullsink        A->|       Do absolutely nothing with the input audio.
 ... alphaextract     V->N       Extract an alpha channel as a grayscale image component.
 ... alphamerge       VV->V      Copy the luma value of the second input into the alpha channel of the first input.
 ... ass              V->V       Render ASS subtitles onto input video using the libass library.
 T.. bbox             V->V       Compute bounding box for each frame.
 ... blackdetect      V->V       Detect video intervals that are (almost) black.
 ... blackframe       V->V       Detect frames that are (almost) black.
 TS. blend            VV->V      Blend two video frames into each other.
 T.. boxblur          V->V       Blur the input.
 T.. codecview        V->V       Visualize information about some codecs
 T.. colorbalance     V->V       Adjust the color balance.
 T.. colorchannelmixer V->V       Adjust colors by mixing color channels.
 T.. colorlevels      V->V       Adjust the color levels.
 TS. colormatrix      V->V       Convert color matrix.
 ... copy             V->V       Copy the input video unchanged to the output.
 ... crop             V->V       Crop the input video.
 T.. cropdetect       V->V       Auto-detect crop size.
 TS. curves           V->V       Adjust components curves.
 TS. dctdnoiz         V->V       Denoise frames using 2D DCT.
 ... decimate         N->V       Decimate frames (post field matching filter).
 ... dejudder         V->V       Remove judder produced by pullup.
 T.. delogo           V->V       Remove logo from input video.
 ... deshake          V->V       Stabilize shaky video.
 T.. drawbox          V->V       Draw a colored box on the input video.
 T.. drawgrid         V->V       Draw a colored grid on the input video.
 T.C drawtext         V->V       Draw text on top of video frames using libfreetype library.
 T.. edgedetect       V->V       Detect and draw edge.
 ... elbg             V->V       Apply posterize effect, using the ELBG algorithm.
 ..C eq               V->V       Adjust brightness, contrast, gamma, and saturation.
 ... extractplanes    V->N       Extract planes as grayscale frames.
 .S. fade             V->V       Fade in/out input video.
 ... fftfilt          V->V       Apply arbitrary expressions to samples in frequency domain
 ... field            V->V       Extract a field from the input video.
 ... fieldmatch       N->V       Field matching for inverse telecine.
 T.. fieldorder       V->V       Set the field order.
 ... format           V->V       Convert the input video to one of the specified pixel formats.
 ... fps              V->V       Force constant framerate.
 ... framepack        VV->V      Generate a frame packed stereoscopic video.
 T.. framestep        V->V       Select one frame every N frames.
 T.. fspp             V->V       Apply Fast Simple Post-processing filter.
 T.. geq              V->V       Apply generic equation to each pixel.
 T.. gradfun          V->V       Debands video quickly using gradients.
 TS. haldclut         VV->V      Adjust colors using a Hald CLUT.
 .S. hflip            V->V       Horizontally flip the input video.
 T.. histeq           V->V       Apply global color histogram equalization.
 ... histogram        V->V       Compute and draw a histogram.
 T.. hqdn3d           V->V       Apply a High Quality 3D Denoiser.
 .S. hqx              V->V       Scale the input by 2, 3 or 4 using the hq*x magnification algorithm.
 T.C hue              V->V       Adjust the hue and saturation of the input video.
 ... idet             V->V       Interlace detect Filter.
 T.. il               V->V       Deinterleave or interleave fields.
 ... interlace        V->V       Convert progressive video into interlaced.
 ... interleave       N->V       Temporally interleave video inputs.
 ... kerndeint        V->V       Apply kernel deinterlacing to the input.
 .S. lenscorrection   V->V       Rectify the image by correcting for lens distortion.
 TS. lut3d            V->V       Adjust colors using a 3D LUT.
 T.. lut              V->V       Compute and apply a lookup table to the RGB/YUV input video.
 T.. lutrgb           V->V       Compute and apply a lookup table to the RGB input video.
 T.. lutyuv           V->V       Compute and apply a lookup table to the YUV input video.
 ... mcdeint          V->V       Apply motion compensating deinterlacing.
 ... mergeplanes      N->V       Merge planes.
 ... mpdecimate       V->V       Remove near-duplicate frames.
 T.. negate           V->V       Negate input video.
 ... noformat         V->V       Force libavfilter not to use any of the specified pixel formats for the input to the next filter.
 TS. noise            V->V       Add noise.
 ... null             V->V       Pass the source unchanged to the output.
 T.C overlay          VV->V      Overlay a video source on top of the input.
 T.. owdenoise        V->V       Denoise using wavelets.
 ... pad              V->V       Pad the input video.
 ... palettegen       V->V       Find the optimal palette for a given stream.
 ... paletteuse       VV->V      Use a palette to downsample an input video stream.
 ... perms            V->V       Set permissions for the output video frame.
 TS. perspective      V->V       Correct the perspective of video.
 T.. phase            V->V       Phase shift fields.
 ... pixdesctest      V->V       Test pixel format definitions.
 T.C pp               V->V       Filter video using libpostproc.
 T.. pp7              V->V       Apply Postprocessing 7 filter.
 ... psnr             VV->V      Calculate the PSNR between two video streams.
 ... pullup           V->V       Pullup from field sequence to frames.
 T.. qp               V->V       Change video quantization parameters.
 T.. removelogo       V->V       Remove a TV logo based on a mask image.
 ... repeatfields     V->V       Hard repeat fields based on MPEG repeat field flag.
 TSC rotate           V->V       Rotate the input image.
 T.. sab              V->V       Apply shape adaptive blur.
 ... scale            V->V       Scale the input video size and/or convert the image format.
 ... select           V->N       Select video frames to pass in output.
 ... sendcmd          V->V       Send commands to filters.
 ... separatefields   V->V       Split input video frames into fields.
 ... setdar           V->V       Set the frame display aspect ratio.
 ... setfield         V->V       Force field for the output video frame.
 ... setpts           V->V       Set PTS for the output video frame.
 ... setsar           V->V       Set the pixel sample aspect ratio.
 ... settb            V->V       Set timebase for the video output link.
 ... showinfo         V->V       Show textual information for each video frame.
 T.. showpalette      V->V       Display frame palette
 ... shuffleplanes    V->V       Shuffle video planes
 .S. signalstats      V->V       Generate statistics from video analysis.
 T.. smartblur        V->V       Blur the input video without impacting the outlines.
 ... split            V->N       Pass on the input to N video outputs.
 T.C spp              V->V       Apply a simple post processing filter.
 ... stereo3d         V->V       Convert video stereoscopic 3D view.
 ... subtitles        V->V       Render text subtitles onto input video using the libass library.
 ... super2xsai       V->V       Scale the input by 2x using the Super2xSaI pixel art algorithm.
 ... swapuv           V->V       Swap U and V components.
 .S. tblend           V->V       Blend successive frames.
 ... telecine         V->V       Apply a telecine pattern.
 ... thumbnail        V->V       Select the most representative frame in a given sequence of consecutive frames.
 ... tile             V->V       Tile several successive frames together.
 ... tinterlace       V->V       Perform temporal field interlacing.
 .S. transpose        V->V       Transpose input video.
 ... trim             V->V       Pick one continuous section from the input, drop the rest.
 T.. unsharp          V->V       Sharpen or blur the input video.
 T.. uspp             V->V       Apply Ultra Simple / Slow Post-processing filter.
 ... vflip            V->V       Flip the input video vertically.
 T.. vignette         V->V       Make or reverse a vignette effect.
 T.. w3fdif           V->V       Apply Martin Weston three field deinterlace.
 .S. xbr              V->V       Scale the input using xBR algorithm.
 TS. yadif            V->V       Deinterlace the input image.
 T.. zoompan          V->V       Apply Zoom & Pan effect.
 ... cellauto         |->V       Create pattern generated by an elementary cellular automaton.
 ..C color            |->V       Provide an uniformly colored input.
 ... haldclutsrc      |->V       Provide an identity Hald CLUT.
 ... life             |->V       Create life.
 ... mandelbrot       |->V       Render a Mandelbrot fractal.
 ... mptestsrc        |->V       Generate various test pattern.
 ... nullsrc          |->V       Null video source, return unprocessed video frames.
 ... rgbtestsrc       |->V       Generate RGB test pattern.
 ... smptebars        |->V       Generate SMPTE color bars.
 ... smptehdbars      |->V       Generate SMPTE HD color bars.
 ... testsrc          |->V       Generate test pattern.
 ... nullsink         V->|       Do absolutely nothing with the input video.
 ... avectorscope     A->V       Convert input audio to vectorscope video output.
 ... concat           N->N       Concatenate audio and video streams.
 ... showcqt          A->V       Convert input audio to a CQT (Constant Q Transform) spectrum video output.
 ... showspectrum     A->V       Convert input audio to a spectrum video output.
 ... showwaves        A->V       Convert input audio to a video output.
 ... showwavespic     A->V       Convert input audio to a video output single picture.
 ... amovie           |->N       Read audio from a movie source.
 ... movie            |->N       Read from a movie source.
 ... ffbuffersink     V->|       Buffer video frames, and make them available to the end of the filter graph.
 ... ffabuffersink    A->|       Buffer audio frames, and make them available to the end of the filter graph.
 ... abuffer          |->A       Buffer audio frames, and make them accessible to the filterchain.
 ... buffer           |->V       Buffer video frames, and make them accessible to the filterchain.
 ... abuffersink      A->|       Buffer audio frames, and make them available to the end of the filter graph.
 ... buffersink       V->|       Buffer video frames, and make them available to the end of the filter graph.
 ... afifo            A->A       Buffer input frames and send them when they are requested.
 ... fifo             V->V       Buffer input images and send them when they are requested.