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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.

 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.

 ... 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.

 ... 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.

 ... mcompand          A->A       Multiband Compress or expand audio dynamic range.

 ... pan               A->A       Remix channels with coefficients (panning).

 ... replaygain        A->A       ReplayGain scanner.

 ... sidechaincompress AA->A      Sidechain compressor.

 ... sidechaingate     AA->A      Audio sidechain gate.

 ... silencedetect     A->A       Detect silence.

 ... silenceremove     A->A       Remove silence.

 ... 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.

 ... 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_qsv   V->V       QuickSync video deinterlacing

 ... dejudder          V->V       Remove judder produced by pullup.

 T.. delogo            V->V       Remove logo from input video.

 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.

 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

 ... hwupload_cuda     V->V       Upload a system memory frame to a CUDA device.

 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.

 ... overlay_qsv       VV->V      Quick Sync Video overlay.

 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.

 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_qsv         V->V       QuickSync video scaling and format conversion

 ..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.

 ... 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.

 ... 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.

 ... vpp_qsv           V->V       Quick Sync Video VPP.

 ... 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.

 ... zoompan           V->V       Apply Zoom & Pan effect.

 ..C zscale            V->V       Apply resizing, colorspace and bit depth conversion.

 ... 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.

 ... 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.

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  • ?
    sSTSs 2019.09.11 14:41

    감사합니다.

     

    음, 근데 HDR -> SDR 변환을 위한 tonemap 필터 사용에 필수적인 zscale 필터는 이번에도 없군요.

    https://ffmpeg.org/ffmpeg-filters.html#tonemap-1

    https://ffmpeg.org/ffmpeg-filters.html#zscale-1

     

    요즘 들어 HDR 컨텐츠가 많아졌기 때문인지 HDR 영상 트랜스코딩에 대한 질문이 많아지던데, zscale이 있다면 샤나인코더의 활용 범위가 좀 더 넓어지지 않을까 생각됩니다.

    zscale 필터가 포함된다면 관련 프리셋을 제작해서 올리도록 하겠습니다.

    뭐 어차피 팁게에 FFmpeg 명령행으로 처리하는 법을 올리긴 했습니다만, 프리셋으로 만들면 아무래도 낫겠죠.

  • ?
    Rina 2019.09.14 12:56
    네, 다음 버전에 들어갈 수 있도록 하겠습니다~
  • ?
    sSTSs 2019.09.14 14:42
    의견 반영해 주셔서 감사합니다.
  • ?
    sSTSs 2019.10.21 13:02

    이 문서도 배포하신 FFmpeg v4.2.1.146 패치에 맞춰서 업데이트해 주시면 좋겠네요.

  • ?
    Rina 2019.10.21 20:45
    업데이트했습니다 ^^

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