ffmpeg -i in.mov -vf "transpose=1" out.mov

For the transpose parameter you can pass:

• 0 = 90CounterCLockwise and Vertical Flip (default)
• 1 = 90Clockwise
• 2 = 90CounterClockwise
• 3 = 90Clockwise and Vertical Flip

Use -vf “transpose=2,transpose=2” for 180 degrees.

Running

ffmpeg -filters 

shows this:

...
Filters:
  T.. = Timeline support
  .S. = Slice threading
  ..C = Command support
  A = Audio input/output
  V = Video input/output
  N = Dynamic number and/or type of input/output
  | = Source or sink filter
 ... abench            A->A       Benchmark part of a filtergraph.
 ... acompressor       A->A       Audio compressor.
 ... acontrast         A->A       Simple audio dynamic range compression/expansion filter.
 ... acopy             A->A       Copy the input audio unchanged to the output.
 ... acue              A->A       Delay filtering to match a cue.
 ... acrossfade        AA->A      Cross fade two input audio streams.
 ... acrossover        A->N       Split audio into per-bands streams.
 ... acrusher          A->A       Reduce audio bit resolution.
 .S. adeclick          A->A       Remove impulsive noise from input audio.
 .S. adeclip           A->A       Remove clipping from input audio.
 T.. adelay            A->A       Delay one or more audio channels.
 ... aderivative       A->A       Compute derivative of input audio.
 ... aecho             A->A       Add echoing to the audio.
 ... aemphasis         A->A       Audio emphasis.
 ... aeval             A->A       Filter audio signal according to a specified expression.
 T.. afade             A->A       Fade in/out input audio.
 TSC afftdn            A->A       Denoise audio samples using FFT.
 ... afftfilt          A->A       Apply arbitrary expressions to samples in frequency domain.
 .S. afir              AA->N      Apply Finite Impulse Response filter with supplied coefficients in 2nd stream.
 ... aformat           A->A       Convert the input audio to one of the specified formats.
 ... agate             A->A       Audio gate.
 .S. aiir              A->N       Apply Infinite Impulse Response filter with supplied coefficients.
 ... aintegral         A->A       Compute integral of input audio.
 ... ainterleave       N->A       Temporally interleave audio inputs.
 ... alimiter          A->A       Audio lookahead limiter.
 TSC allpass           A->A       Apply a two-pole all-pass filter.
 ... aloop             A->A       Loop audio samples.
 ... amerge            N->A       Merge two or more audio streams into a single multi-channel stream.
 T.. ametadata         A->A       Manipulate audio frame metadata.
 ... amix              N->A       Audio mixing.
 ... amultiply         AA->A      Multiply two audio streams.
 ..C anequalizer       A->N       Apply high-order audio parametric multi band equalizer.
 TSC anlmdn            A->A       Reduce broadband noise from stream using Non-Local Means.
 ... 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.
 ... apulsator         A->A       Audio pulsator.
 ... arealtime         A->A       Slow down filtering to match realtime.
 ... aresample         A->A       Resample audio data.
 ... areverse          A->A       Reverse an audio clip.
 ... 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.
 T.. asidedata         A->A       Manipulate audio frame side data.
 T.. asoftclip         A->A       Audio Soft Clipper.
 ... asplit            A->N       Pass on the audio input to N audio outputs.
 ... astats            A->A       Show time domain statistics about audio frames.
 ..C astreamselect     N->N       Select audio streams
 ..C atempo            A->A       Adjust audio tempo.
 ... atrim             A->A       Pick one continuous section from the input, drop the rest.
 ... azmq              A->A       Receive commands through ZMQ and broker them to filters.
 TSC bandpass          A->A       Apply a two-pole Butterworth band-pass filter.
 TSC bandreject        A->A       Apply a two-pole Butterworth band-reject filter.
 TSC bass              A->A       Boost or cut lower frequencies.
 TSC biquad            A->A       Apply a biquad IIR filter with the given coefficients.
 ... bs2b              A->A       Bauer stereo-to-binaural filter.
 ... channelmap        A->A       Remap audio channels.
 ... channelsplit      A->N       Split audio into per-channel streams.
 ... chorus            A->A       Add a chorus effect to the audio.
 ... compand           A->A       Compress or expand audio dynamic range.
 ... compensationdelay A->A       Audio Compensation Delay Line.
 T.. crossfeed         A->A       Apply headphone crossfeed filter.
 ... crystalizer       A->A       Simple expand audio dynamic range filter.
 T.. dcshift           A->A       Apply a DC shift to the audio.
 T.. deesser           A->A       Apply de-essing to the audio.
 ... drmeter           A->A       Measure audio dynamic range.
 T.. dynaudnorm        A->A       Dynamic Audio Normalizer.
 ... earwax            A->A       Widen the stereo image.
 ... ebur128           A->N       EBU R128 scanner.
 TSC equalizer         A->A       Apply two-pole peaking equalization (EQ) filter.
 T.. extrastereo       A->A       Increase difference between stereo audio channels.
 ..C firequalizer      A->A       Finite Impulse Response Equalizer.
 ... flanger           A->A       Apply a flanging effect to the audio.
 ... haas              A->A       Apply Haas Stereo Enhancer.
 ... hdcd              A->A       Apply High Definition Compatible Digital (HDCD) decoding.
 .S. headphone         N->A       Apply headphone binaural spatialization with HRTFs in additional streams.
 TSC highpass          A->A       Apply a high-pass filter with 3dB point frequency.
 TSC highshelf         A->A       Apply a high shelf filter.
 ... join              N->A       Join multiple audio streams into multi-channel output.
 ..C ladspa            N->A       Apply LADSPA effect.
 ... loudnorm          A->A       EBU R128 loudness normalization
 TSC lowpass           A->A       Apply a low-pass filter with 3dB point frequency.
 TSC lowshelf          A->A       Apply a low shelf filter.
 ... lv2               N->A       Apply LV2 effect.
 ... mcompand          A->A       Multiband Compress or expand audio dynamic range.
 ... pan               A->A       Remix channels with coefficients (panning).
 ... replaygain        A->A       ReplayGain scanner.
 ..C rubberband        A->A       Apply time-stretching and pitch-shifting.
 ... sidechaincompress AA->A      Sidechain compressor.
 ... sidechaingate     AA->A      Audio sidechain gate.
 ... silencedetect     A->A       Detect silence.
 ... silenceremove     A->A       Remove silence.
 .S. sofalizer         A->A       SOFAlizer (Spatially Oriented Format for Acoustics).
 ... stereotools       A->A       Apply various stereo tools.
 T.. stereowiden       A->A       Apply stereo widening effect.
 ... superequalizer    A->A       Apply 18 band equalization filter.
 .S. surround          A->A       Apply audio surround upmix filter.
 TSC treble            A->A       Boost or cut upper frequencies.
 ... tremolo           A->A       Apply tremolo effect.
 ... vibrato           A->A       Apply vibrato effect.
 T.C volume            A->A       Change input volume.
 ... volumedetect      A->A       Detect audio volume.
 ... aevalsrc          |->A       Generate an audio signal generated by an expression.
 ... anoisesrc         |->A       Generate a noise audio signal.
 ... anullsrc          |->A       Null audio source, return empty audio frames.
 ... flite             |->A       Synthesize voice from text using libflite.
 ... hilbert           |->A       Generate a Hilbert transform FIR coefficients.
 ... sinc              |->A       Generate a sinc kaiser-windowed low-pass, high-pass, band-pass, or band-reject FIR coefficients.
 ... 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.
 .S. amplify           V->V       Amplify changes between successive video frames.
 ... ass               V->V       Render ASS subtitles onto input video using the libass library.
 TS. atadenoise        V->V       Apply an Adaptive Temporal Averaging Denoiser.
 TS. avgblur           V->V       Apply Average Blur filter.
 T.. bbox              V->V       Compute bounding box for each frame.
 ... bench             V->V       Benchmark part of a filtergraph.
 T.. bitplanenoise     V->V       Measure bit plane noise.
 ... 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.
 TS. bm3d              N->V       Block-Matching 3D denoiser.
 T.. boxblur           V->V       Blur the input.
 TS. bwdif             V->V       Deinterlace the input image.
 TS. chromahold        V->V       Turns a certain color range into gray.
 TS. chromakey         V->V       Turns a certain color into transparency. Operates on YUV colors.
 TS. chromashift       V->V       Shift chroma.
 ... ciescope          V->V       Video CIE scope.
 T.. codecview         V->V       Visualize information about some codecs.
 TS. colorbalance      V->V       Adjust the color balance.
 TS. colorchannelmixer V->V       Adjust colors by mixing color channels.
 TS. colorkey          V->V       Turns a certain color into transparency. Operates on RGB colors.
 TS. colorhold         V->V       Turns a certain color range into gray. Operates on RGB colors.
 TS. colorlevels       V->V       Adjust the color levels.
 TS. colormatrix       V->V       Convert color matrix.
 TS. colorspace        V->V       Convert between colorspaces.
 TS. convolution       V->V       Apply convolution filter.
 TS. convolve          VV->V      Convolve first video stream with second video stream.
 ... copy              V->V       Copy the input video unchanged to the output.
 ... cover_rect        V->V       Find and cover a user specified object.
 ..C crop              V->V       Crop the input video.
 T.. cropdetect        V->V       Auto-detect crop size.
 ... cue               V->V       Delay filtering to match a cue.
 TS. curves            V->V       Adjust components curves.
 .S. datascope         V->V       Video data analysis.
 TS. dctdnoiz          V->V       Denoise frames using 2D DCT.
 TS. deband            V->V       Debands video.
 T.. deblock           V->V       Deblock video.
 ... decimate          N->V       Decimate frames (post field matching filter).
 TS. deconvolve        VV->V      Deconvolve first video stream with second video stream.
 TS. dedot             V->V       Reduce cross-luminance and cross-color.
 TS. deflate           V->V       Apply deflate effect.
 ... deflicker         V->V       Remove temporal frame luminance variations.
 ... deinterlace_vaapi V->V       Deinterlacing of VAAPI surfaces
 ... dejudder          V->V       Remove judder produced by pullup.
 T.. delogo            V->V       Remove logo from input video.
 ... denoise_vaapi     V->V       VAAPI VPP for de-noise
 T.. derain            V->V       Apply derain filter to the input.
 ... deshake           V->V       Stabilize shaky video.
 TS. despill           V->V       Despill video.
 ... detelecine        V->V       Apply an inverse telecine pattern.
 TS. dilation          V->V       Apply dilation effect.
 T.. displace          VVV->V     Displace pixels.
 ... doubleweave       V->V       Weave input video fields into double number of frames.
 T.. drawbox           V->V       Draw a colored box on the input video.
 ... drawgraph         V->V       Draw a graph using input video metadata.
 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.
 T.. entropy           V->V       Measure video frames entropy.
 T.C eq                V->V       Adjust brightness, contrast, gamma, and saturation.
 TS. erosion           V->V       Apply erosion effect.
 ... extractplanes     V->N       Extract planes as grayscale frames.
 .S. fade              V->V       Fade in/out input video.
 T.. fftdnoiz          V->V       Denoise frames using 3D FFT.
 T.. fftfilt           V->V       Apply arbitrary expressions to pixels in frequency domain.
 ... field             V->V       Extract a field from the input video.
 ... fieldhint         V->V       Field matching using hints.
 ... fieldmatch        N->V       Field matching for inverse telecine.
 T.. fieldorder        V->V       Set the field order.
 T.. fillborders       V->V       Fill borders of the input video.
 ... find_rect         V->V       Find a user specified object.
 T.. floodfill         V->V       Fill area with same color with another color.
 ... 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.
 .S. framerate         V->V       Upsamples or downsamples progressive source between specified frame rates.
 T.. framestep         V->V       Select one frame every N frames.
 ... freezedetect      V->V       Detects frozen video input.
 ... frei0r            V->V       Apply a frei0r effect.
 T.. fspp              V->V       Apply Fast Simple Post-processing filter.
 TS. gblur             V->V       Apply Gaussian Blur filter.
 TS. geq               V->V       Apply generic equation to each pixel.
 T.. gradfun           V->V       Debands video quickly using gradients.
 ... graphmonitor      V->V       Show various filtergraph stats.
 TS. greyedge          V->V       Estimates scene illumination by grey edge assumption.
 TS. haldclut          VV->V      Adjust colors using a Hald CLUT.
 TS. 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.
 ... hstack            N->V       Stack video inputs horizontally.
 T.C hue               V->V       Adjust the hue and saturation of the input video.
 ... hwdownload        V->V       Download a hardware frame to a normal frame
 ... hwmap             V->V       Map hardware frames
 ... hwupload          V->V       Upload a normal frame to a hardware frame
 T.. hysteresis        VV->V      Grow first stream into second stream by connecting components.
 ... idet              V->V       Interlace detect Filter.
 T.. il                V->V       Deinterleave or interleave fields.
 TS. inflate           V->V       Apply inflate effect.
 ... 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. lagfun            V->V       Slowly update darker pixels.
 .S. lenscorrection    V->V       Rectify the image by correcting for lens distortion.
 TS. limiter           V->V       Limit pixels components to the specified range.
 ... loop              V->V       Loop video frames.
 TS. lumakey           V->V       Turns a certain luma into transparency.
 TS. lut               V->V       Compute and apply a lookup table to the RGB/YUV input video.
 TS. lut1d             V->V       Adjust colors using a 1D LUT.
 TS. lut2              VV->V      Compute and apply a lookup table from two video inputs.
 TS. lut3d             V->V       Adjust colors using a 3D LUT.
 TS. lutrgb            V->V       Compute and apply a lookup table to the RGB input video.
 TS. lutyuv            V->V       Compute and apply a lookup table to the YUV input video.
 TS. maskedclamp       VVV->V     Clamp first stream with second stream and third stream.
 TS. maskedmerge       VVV->V     Merge first stream with second stream using third stream as mask.
 TS. maskfun           V->V       Create Mask.
 ... mcdeint           V->V       Apply motion compensating deinterlacing.
 ... mergeplanes       N->V       Merge planes.
 ... mestimate         V->V       Generate motion vectors.
 T.. metadata          V->V       Manipulate video frame metadata.
 T.. midequalizer      VV->V      Apply Midway Equalization.
 ... minterpolate      V->V       Frame rate conversion using Motion Interpolation.
 .S. mix               N->V       Mix video inputs.
 ... mpdecimate        V->V       Remove near-duplicate frames.
 TS. negate            V->V       Negate input video.
 TS. nlmeans           V->V       Non-local means denoiser.
 T.. nnedi             V->V       Apply neural network edge directed interpolation intra-only deinterlacer.
 ... 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.
 T.. normalize         V->V       Normalize RGB video.
 ... null              V->V       Pass the source unchanged to the output.
 T.. oscilloscope      V->V       2D Video Oscilloscope.
 TSC 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.. pixscope          V->V       Pixel data analysis.
 T.C pp                V->V       Filter video using libpostproc.
 T.. pp7               V->V       Apply Postprocessing 7 filter.
 TS. premultiply       N->V       PreMultiply first stream with first plane of second stream.
 TS. prewitt           V->V       Apply prewitt operator.
 ... procamp_vaapi     V->V       ProcAmp (color balance) adjustments for hue, saturation, brightness, contrast
 T.. pseudocolor       V->V       Make pseudocolored video frames.
 ... 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.
 ... random            V->V       Return random frames.
 T.. readeia608        V->V       Read EIA-608 Closed Caption codes from input video and write them to frame metadata.
 ... readvitc          V->V       Read vertical interval timecode and write it to frame metadata.
 ... realtime          V->V       Slow down filtering to match realtime.
 TS. remap             VVV->V     Remap pixels.
 TS. removegrain       V->V       Remove grain.
 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.
 ... reverse           V->V       Reverse a clip.
 TS. rgbashift         V->V       Shift RGBA.
 TS. roberts           V->V       Apply roberts cross operator.
 TSC rotate            V->V       Rotate the input image.
 T.. sab               V->V       Apply shape adaptive blur.
 ..C scale             V->V       Scale the input video size and/or convert the image format.
 ... scale_vaapi       V->V       Scale to/from VAAPI surfaces.
 ..C scale2ref         VV->VV     Scale the input video size and/or convert the image format to the given reference.
 ... select            V->N       Select video frames to pass in output.
 TS. selectivecolor    V->V       Apply CMYK adjustments to specific color ranges.
 ... 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.
 ... setparams         V->V       Force field, or color property for the output video frame.
 ... setpts            V->V       Set PTS for the output video frame.
 ... setrange          V->V       Force color range for the output video frame.
 ... setsar            V->V       Set the pixel sample aspect ratio.
 ... settb             V->V       Set timebase for the video output link.
 ... sharpness_vaapi   V->V       VAAPI VPP for sharpness
 ... showinfo          V->V       Show textual information for each video frame.
 T.. showpalette       V->V       Display frame palette.
 T.. shuffleframes     V->V       Shuffle video frames.
 T.. shuffleplanes     V->V       Shuffle video planes.
 T.. sidedata          V->V       Manipulate video frame side data.
 .S. signalstats       V->V       Generate statistics from video analysis.
 ... signature         N->V       Calculate the MPEG-7 video signature
 T.. smartblur         V->V       Blur the input video without impacting the outlines.
 TS. sobel             V->V       Apply sobel operator.
 ... split             V->N       Pass on the input to N video outputs.
 T.C spp               V->V       Apply a simple post processing filter.
 T.. sr                V->V       Apply DNN-based image super resolution to the input.
 ... ssim              VV->V      Calculate the SSIM between two video streams.
 .S. stereo3d          V->V       Convert video stereoscopic 3D view.
 ..C streamselect      N->N       Select video streams
 ... 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.
 T.. swaprect          V->V       Swap 2 rectangular objects in video.
 T.. swapuv            V->V       Swap U and V components.
 TS. tblend            V->V       Blend successive frames.
 ... telecine          V->V       Apply a telecine pattern.
 TS. threshold         VVVV->V    Threshold first video stream using other video streams.
 ... 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.
 TS. tlut2             V->V       Compute and apply a lookup table from two successive frames.
 TS. tmix              V->V       Mix successive video frames.
 .S. tonemap           V->V       Conversion to/from different dynamic ranges.
 ... tpad              V->V       Temporarily pad video frames.
 .S. transpose         V->V       Transpose input video.
 ... transpose_vaapi   V->V       VAAPI VPP for transpose
 ... trim              V->V       Pick one continuous section from the input, drop the rest.
 TS. unpremultiply     N->V       UnPreMultiply first stream with first plane of second stream.
 TS. unsharp           V->V       Sharpen or blur the input video.
 T.. uspp              V->V       Apply Ultra Simple / Slow Post-processing filter.
 T.. vaguedenoiser     V->V       Apply a Wavelet based Denoiser.
 ... vectorscope       V->V       Video vectorscope.
 T.. vflip             V->V       Flip the input video vertically.
 ... vfrdet            V->V       Variable frame rate detect filter.
 TS. vibrance          V->V       Boost or alter saturation.
 ... vidstabdetect     V->V       Extract relative transformations, pass 1 of 2 for stabilization (see vidstabtransform for pass 2).
 ... vidstabtransform  V->V       Transform the frames, pass 2 of 2 for stabilization (see vidstabdetect for pass 1).
 T.. vignette          V->V       Make or reverse a vignette effect.
 ... vmafmotion        V->V       Calculate the VMAF Motion score.
 ... vstack            N->V       Stack video inputs vertically.
 TS. w3fdif            V->V       Apply Martin Weston three field deinterlace.
 .S. waveform          V->V       Video waveform monitor.
 ... weave             V->V       Weave input video fields into frames.
 .S. xbr               V->V       Scale the input using xBR algorithm.
 .S. xmedian           N->V       Pick median pixels from several video inputs.
 ... xstack            N->V       Stack video inputs into custom layout.
 TS. yadif             V->V       Deinterlace the input image.
 ... zmq               V->V       Receive commands through ZMQ and broker them to filters.
 ... zoompan           V->V       Apply Zoom & Pan effect.
 ... allrgb            |->V       Generate all RGB colors.
 ... allyuv            |->V       Generate all yuv colors.
 ... cellauto          |->V       Create pattern generated by an elementary cellular automaton.
 ..C color             |->V       Provide an uniformly colored input.
 ... frei0r_src        |->V       Generate a frei0r source.
 ... 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.
 ... pal75bars         |->V       Generate PAL 75% color bars.
 ... pal100bars        |->V       Generate PAL 100% color bars.
 ... rgbtestsrc        |->V       Generate RGB test pattern.
 ... smptebars         |->V       Generate SMPTE color bars.
 ... smptehdbars       |->V       Generate SMPTE HD color bars.
 ... testsrc           |->V       Generate test pattern.
 ... testsrc2          |->V       Generate another test pattern.
 ... yuvtestsrc        |->V       Generate YUV test pattern.
 ... nullsink          V->|       Do absolutely nothing with the input video.
 ... abitscope         A->V       Convert input audio to audio bit scope video output.
 ... adrawgraph        A->V       Draw a graph using input audio metadata.
 ... agraphmonitor     A->V       Show various filtergraph stats.
 ... ahistogram        A->V       Convert input audio to histogram video output.
 ... aphasemeter       A->N       Convert input audio to phase meter video output.
 ... avectorscope      A->V       Convert input audio to vectorscope video output.
 ..C concat            N->N       Concatenate audio and video streams.
 ... showcqt           A->V       Convert input audio to a CQT (Constant/Clamped Q Transform) spectrum video output.
 ... showfreqs         A->V       Convert input audio to a frequencies video output.
 .S. showspatial       A->V       Convert input audio to a spatial video output.
 .S. showspectrum      A->V       Convert input audio to a spectrum video output.
 .S. showspectrumpic   A->V       Convert input audio to a spectrum video output single picture.
 ... showvolume        A->V       Convert input audio volume to video output.
 ... showwaves         A->V       Convert input audio to a video output.
 ... showwavespic      A->V       Convert input audio to a video output single picture.
 ... spectrumsynth     VV->A      Convert input spectrum videos to audio output.
 ..C amovie            |->N       Read audio from a movie source.
 ..C movie             |->N       Read from a movie source.
 ... 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.
 ... 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.

Filters:
anull            Pass the source unchanged to the output.
aspect           Set the frame aspect ratio.
crop             Crop the input video to x:y:width:height.
fifo             Buffer input images and send them when they are requested.
format           Convert the input video to one of the specified pixel formats.
hflip            Horizontally flip the input video.
noformat         Force libavfilter not to use any of the specified pixel formats
 for the input to the next filter.
null             Pass the source unchanged to the output.
pad              Pad input image to width:height[:x:y[:color]] (default x and y:
 0, default color: black).
pixdesctest      Test pixel format definitions.
pixelaspect      Set the pixel aspect ratio.
scale            Scale the input video to width:height size and/or convert the i
mage format.
slicify          Pass the images of input video on to next video filter as multi
ple slices.
unsharp          Sharpen or blur the input video.
vflip            Flip the input video vertically.
buffer           Buffer video frames, and make them accessible to the filterchai
n.
color            Provide an uniformly colored input, syntax is: [color[:size[:ra
te]]]
nullsrc          Null video source, never return images.
nullsink         Do absolutely nothing with the input video.