| acompressor |
壓縮音頻信號(hào),當(dāng)輸入信號(hào)超過某個(gè)預(yù)設(shè)閾值時(shí)，壓縮器就會(huì)開始工作。該濾鏡使音量大的部分變得不那么響亮，而音量小的部分相對(duì)變得響亮，這樣就可以使整體聽起來(lái)更加均衡，常用于音樂制作、廣播和現(xiàn)場(chǎng)混音。 |
| acontrast |
調(diào)整音頻信號(hào)的對(duì)比度，支持傳入?yún)?shù)contrast，范圍是0至100，默認(rèn)是33。 |
| acrossfade |
Cross fade two input audio streams. |
| acrossover |
Split audio into per-bands streams. |
| acrusher |
Reduce audio bit resolution. |
| adeclick |
Remove impulsive noise from input audio. |
| adeclip |
Remove clipping from input audio. |
| adelay |
Delay one or more audio channels. |
| adenorm |
Remedy denormals by adding extremely low-level noise. |
| aderivative |
Compute derivative of input audio. |
| aecho |
Add echoing to the audio. |
| aemphasis |
Audio emphasis. |
| aeval |
用于對(duì)輸入音頻的每個(gè)樣本值進(jìn)行算術(shù)求值和轉(zhuǎn)換。 |
| aexciter |
Enhance high frequency part of audio. |
| afade |
實(shí)現(xiàn)音頻的淡入（fade-in）和淡出（fade-out）效果,讓音頻平滑地開始或結(jié)束，使音頻過渡不那么突兀。 |
| afftdn |
Denoise audio samples using FFT. |
| afftfilt |
Apply arbitrary expressions to samples in frequency domain. |
| afir |
Apply Finite Impulse Response filter with supplied coefficients in additional stream(s). |
| aformat |
Convert the input audio to one of the specified formats. |
| afreqshift |
Apply frequency shifting to input audio. |
| agate |
Audio gate. |
| aiir |
Apply Infinite Impulse Response filter with supplied coefficients. |
| aintegral |
Compute integral of input audio. |
| ainterleave |
Temporally interleave audio inputs. |
| alimiter |
Audio lookahead limiter. |
| allpass |
Apply a two-pole all-pass filter. |
| aloop |
Loop audio samples. |
| amerge |
Merge two or more audio streams into a single multi-channel stream. |
| ametadata |
用于在音頻過濾處理管道中操作音頻流的元數(shù)據(jù) |
| amix |
將所有輸入音頻的通道數(shù)、采樣率和格式匹配起來(lái)，輸出一個(gè)統(tǒng)一的音頻軌道。amix 功能在需要將多個(gè)音頻源合成為一個(gè)單一音軌的場(chǎng)景，比如混音、音樂制作和視頻編輯中非常實(shí)用。 |
| amultiply |
Multiply two audio streams. |
| anequalizer |
Apply high-order audio parametric multi band equalizer. |
| anlmdn |
Reduce broadband noise from stream using Non-Local Means. |
| anlms |
Apply Normalized Least-Mean-Squares algorithm to first audio stream. |
| anull |
Pass the source unchanged to the output. |
| apad |
Pad audio with silence. |
| aperms |
Set permissions for the output audio frame. |
| aphaser |
Add a phasing effect to the audio. |
| aphaseshift |
Apply phase shifting to input audio. |
| apulsator |
Audio pulsator. |
| arealtime |
Slow down filtering to match realtime. |
| aresample |
Resample audio data. |
| areverse |
Reverse an audio clip. |
| arnndn |
Reduce noise from speech using Recurrent Neural Networks. |
| aselect |
Select audio frames to pass in output. |
| asendcmd |
Send commands to filters. |
| asetnsamples |
Set the number of samples for each output audio frames. |
| asetpts |
Set PTS for the output audio frame. |
| asetrate |
Change the sample rate without altering the data. |
| asettb |
Set timebase for the audio output link. |
| ashowinfo |
Show textual information for each audio frame. |
| asidedata |
Manipulate audio frame side data. |
| asoftclip |
Audio Soft Clipper. |
| asplit |
將一個(gè)音頻流分成多個(gè)相同的音頻流。 |
| astats |
Show time domain statistics about audio frames. |
| astreamselect |
Select audio streams |
| asubboost |
Boost subwoofer frequencies. |
| asubcut |
Cut subwoofer frequencies. |
| asupercut |
Cut super frequencies. |
| asuperpass |
Apply high order Butterworth band-pass filter. |
| asuperstop |
Apply high order Butterworth band-stop filter. |
| atempo |
Adjust audio tempo. |
| atrim |
Pick one continuous section from the input, drop the rest. |
| axcorrelate |
Cross-correlate two audio streams. |
| bandpass |
Apply a two-pole Butterworth band-pass filter. |
| bandreject |
Apply a two-pole Butterworth band-reject filter. |
| bass |
Boost or cut lower frequencies. |
| biquad |
Apply a biquad IIR filter with the given coefficients. |
| channelmap |
重新映射或改變音頻流中的各個(gè)聲道。它能夠選擇性地改變聲道的順序，或者從多聲道音頻中剝離出特定的聲道。 |
| channelsplit |
將每個(gè)聲道作為單獨(dú)的單聲道音頻流輸出 |
| chorus |
Add a chorus effect to the audio. |
| compand |
Compress or expand audio dynamic range. |
| compensationdelay |
Audio Compensation Delay Line. |
| crossfeed |
Apply headphone crossfeed filter. |
| crystalizer |
Simple audio noise sharpening filter. |
| dcshift |
Apply a DC shift to the audio. |
| deesser |
Apply de-essing to the audio. |
| drmeter |
Measure audio dynamic range. |
| dynaudnorm |
動(dòng)態(tài)地調(diào)整音頻軌道的音量，提供類似于壓縮器/限制器但更先進(jìn)的功能。這個(gè)濾鏡能夠在不明顯改變?cè)家纛l動(dòng)態(tài)范圍的前提下，減小響度差異并均衡整體音量。 |
| earwax |
Widen the stereo image. |
| ebur128 |
用于測(cè)量音頻信號(hào)響度的工具，它實(shí)現(xiàn)了歐洲廣播聯(lián)盟（EBU，European Broadcasting Union）R 128標(biāo)準(zhǔn)的響度測(cè)量。 |
| loudnorm |
實(shí)現(xiàn)EBU R128標(biāo)準(zhǔn)的響度歸一化濾鏡，其主要用途是自動(dòng)調(diào)整音頻軌道的響度，使之達(dá)到一致的、指定的響度水平。 |
| equalizer |
用來(lái)調(diào)整音頻信號(hào)的特定頻率段的增益，實(shí)現(xiàn)類似于圖形均衡器的功能。 |
| extrastereo |
Increase difference between stereo audio channels. |
| firequalizer |
Finite Impulse Response Equalizer. |
| flanger |
Apply a flanging effect to the audio. |
| haas |
Apply Haas Stereo Enhancer. |
| hdcd |
Apply High Definition Compatible Digital (HDCD) decoding. |
| headphone |
Apply headphone binaural spatialization with HRTFs in additional streams. |
| highpass |
Apply a high-pass filter with 3dB point frequency. |
| highshelf |
Apply a high shelf filter. |
| join |
Join multiple audio streams into multi-channel output. |
| lowpass |
實(shí)現(xiàn)低通濾波器功能，它允許頻率低于某一截止頻率的信號(hào)通過，同時(shí)減弱高于這個(gè)截止頻率的信號(hào)； |
| lowshelf |
調(diào)整截止點(diǎn)以下頻率的增益，而不是切斷它們。 |
| mcompand |
Multiband Compress or expand audio dynamic range. |
| pan |
Remix channels with coefficients (panning). |
| replaygain |
ReplayGain scanner. |
| sidechaincompress |
Sidechain compressor. |
| sidechaingate |
Audio sidechain gate. |
| silencedetect |
用于檢測(cè)音頻中的靜音部分，它可以對(duì)音頻進(jìn)行分析并記錄下靜音發(fā)生的時(shí)間和持續(xù)時(shí)長(zhǎng)。 |
| silenceremove |
用于去除或調(diào)整音頻流中的靜音部分，使用時(shí)可以指定要移除靜音部分的參數(shù)，例如靜音閾值、最小持續(xù)時(shí)間、以及在靜音前后保留的音頻長(zhǎng)度。 |
| speechnorm |
Speech Normalizer. |
| stereotools |
Apply various stereo tools. |
| stereowiden |
Apply stereo widening effect. |
| superequalizer |
Apply 18 band equalization filter. |
| surround |
Apply audio surround upmix filter. |
| treble |
Boost or cut upper frequencies. |
| tremolo |
Apply tremolo effect. |
| vibrato |
Apply vibrato effect. |
| volume |
調(diào)整音頻信號(hào)的音量。你可以使用該濾鏡增加或降低音頻軌道的整體音量級(jí)別。 |
| volumedetect |
檢測(cè)音頻信號(hào)的音量級(jí)別，包括它的最大值、平均值、RMS（均方根）值等。 |
| aevalsrc |
Generate an audio signal generated by an expression. |
| afirsrc |
Generate a FIR coefficients audio stream. |
| anoisesrc |
Generate a noise audio signal. |
| anullsrc |
Null audio source, return empty audio frames. |
| hilbert |
Generate a Hilbert transform FIR coefficients. |
| sinc |
Generate a sinc kaiser-windowed low-pass, high-pass, band-pass, or band-reject FIR coefficients. |
| sine |
Generate sine wave audio signal. |
| anullsink |
Do absolutely nothing with the input audio. |
| addroi |
Add region of interest to frame. |
| alphaextract |
Extract an alpha channel as a grayscale image component. |
| alphamerge |
Copy the luma value of the second input into the alpha channel of the first input. |
| amplify |
Amplify changes between successive video frames. |
| atadenoise |
Apply an Adaptive Temporal Averaging Denoiser. |
| avgblur |
Apply Average Blur filter. |
| bbox |
Compute bounding box for each frame. |
| bilateral |
Apply Bilateral filter. |
| bitplanenoise |
Measure bit plane noise. |
| blackdetect |
檢測(cè)視頻中的黑色片段，該濾鏡能夠識(shí)別出黑場(chǎng)的開始和持續(xù)時(shí)間。 |
| blackframe |
檢測(cè)視頻中的黑色幀。與 blackdetect 不同，blackframe 專注于單個(gè)黑色幀而非片段，并給出黑色幀對(duì)應(yīng)的閾值和數(shù)量。 |
| blend |
Blend two video frames into each other. |
| bm3d |
Block-Matching 3D denoiser. |
| boxblur |
對(duì)視頻幀實(shí)施盒式模糊效果。"盒式模糊"（Box Blur）又稱為“均值模糊”（Mean Blur），是一種簡(jiǎn)單有效的模糊算法，通過均勻地取周圍像素的平均值來(lái)模糊每個(gè)像素點(diǎn)。boxblur 濾鏡可以應(yīng)用于整個(gè)視頻幀，也可以單獨(dú)應(yīng)用于亮度（luma）和色度（chroma）通道。 |
| chromakey |
將視頻中的特定顏色（通常是綠屏或藍(lán)屏）替換成其他背景圖像或視頻。 |
| chromanr |
Reduce chrominance noise. |
| chromashift |
Shift chroma. |
| ciescope |
Video CIE scope. |
| codecview |
Visualize information about some codecs. |
| colorbalance |
Adjust the color balance. |
| colorchannelmixer |
Adjust colors by mixing color channels. |
| colorcontrast |
Adjust color contrast between RGB components. |
| colorcorrect |
Adjust color white balance selectively for blacks and whites. |
| colorize |
Overlay a solid color on the video stream. |
| colorkey |
Turns a certain color into transparency. Operates on RGB colors. |
| colorhold |
Turns a certain color range into gray. Operates on RGB colors. |
| colorlevels |
Adjust the color levels. |
| colormatrix |
Convert color matrix. |
| colorspace |
Convert between colorspaces. |
| colortemperature |
Adjust color temperature of video. |
| convolution |
Apply convolution filter. |
| convolve V |
Convolve first video stream with second video stream. |
| coreimage |
Video filtering using CoreImage API. |
| cover_rect |
Find and cover a user specified object. |
| cropdetect |
自動(dòng)檢測(cè)視頻幀的邊緣并建議需要裁剪的區(qū)域和尺寸，這是視頻后期處理中常用的功能，特別是在處理舊電影或電視節(jié)目時(shí)，從而消除不必要的黑色邊框，使畫面更加干凈。 |
| crop |
根據(jù)給出的參數(shù)來(lái)裁剪視頻; |
| curves |
Adjust components curves. |
| datascope |
Video data analysis. |
| dblur |
Apply Directional Blur filter. |
| dctdnoiz |
Denoise frames using 2D DCT. |
| deband |
Debands video. |
| deblock |
Deblock video. |
| decimate |
Decimate frames (post field matching filter). |
| deconvolve |
Deconvolve first video stream with second video stream. |
| dedot |
Reduce cross-luminance and cross-color. |
| deflate |
Apply deflate effect. |
| deflicker |
Remove temporal frame luminance variations. |
| dejudder |
Remove judder produced by pullup. |
| delogo |
用于移除視頻中的水印或徽標(biāo)。這個(gè)濾鏡可以在不影響視頻其他部分質(zhì)量的情況下，盡可能地清除掉固定位置的水印。 |
| derain |
Apply derain filter to the input. |
| deshake |
Stabilize shaky video. |
| despill |
Despill video. |
| detelecine |
Apply an inverse telecine pattern. |
| dilation |
Apply dilation effect. |
| displace |
Displace pixels. |
| dnn_processing |
Apply DNN processing filter to the input. |
| doubleweave |
Weave input video fields into double number of frames. |
| drawbox |
Draw a colored box on the input video. |
| drawgraph |
Draw a graph using input video metadata. |
| drawgrid |
Draw a colored grid on the input video. |
| edgedetect |
通過邊緣檢測(cè)算法來(lái)突出顯示圖像中的線條和邊緣，這通常用于視頻分析、藝術(shù)效果或前期的視覺效果制作。 |
| elbg |
Apply posterize effect, using the ELBG algorithm. |
| entropy |
Measure video frames entropy. |
| epx |
Scale the input using EPX algorithm. |
| eq |
Adjust brightness, contrast, gamma, and saturation. |
| erosion |
Apply erosion effect. |
| estdif |
Apply Edge Slope Tracing deinterlace. |
| exposure |
Adjust exposure of the video stream. |
| extractplanes |
Extract planes as grayscale frames. |
| fade |
Fade in/out input video. |
| fftdnoiz |
Denoise frames using 3D FFT. |
| fftfilt |
Apply arbitrary expressions to pixels in frequency domain. |
| field |
Extract a field from the input video. |
| fieldhint |
Field matching using hints. |
| fieldmatch |
Field matching for inverse telecine. |
| fieldorder |
Set the field order. |
| fillborders |
Fill borders of the input video. |
| find_rect |
Find a user specified object. |
| floodfill |
Fill area with same color with another color. |
| format |
Convert the input video to one of the specified pixel formats. |
| fps |
Force constant framerate. |
| framepack |
Generate a frame packed stereoscopic video. |
| framerate |
Upsamples or downsamples progressive source between specified frame rates. |
| framestep |
Select one frame every N frames. |
| freezedetect |
Detects frozen video input. |
| freezeframes |
Freeze video frames. |
| fspp |
Apply Fast Simple Post-processing filter. |
| gblur |
Apply Gaussian Blur filter. |
| geq |
Apply generic equation to each pixel. |
| gradfun |
Debands video quickly using gradients. |
| graphmonitor |
Show various filtergraph stats. |
| greyedge |
Estimates scene illumination by grey edge assumption. |
| haldclut V |
Adjust colors using a Hald CLUT. |
| hflip |
Horizontally flip the input video. |
| histeq |
Apply global color histogram equalization. |
| histogram |
Compute and draw a histogram. |
| hqdn3d |
Apply a High Quality 3D Denoiser. |
| hqx |
Scale the input by 2, 3 or 4 using the hq*x magnification algorithm. |
| hstack |
用于將多個(gè)視頻流水平堆疊（并排）在一起。主要用于在一行中創(chuàng)建分屏效果，比如同一畫面同時(shí)展示兩個(gè)或多個(gè)不同畫面的視頻。 |
| vstack |
用于垂直疊加（豎向排列）多個(gè)視頻流，類似于 hstack 濾鏡的水平疊加功能。 |
| hue |
Adjust the hue and saturation of the input video. |
| hwdownload |
Download a hardware frame to a normal frame |
| hwmap |
Map hardware frames |
| hwupload |
Upload a normal frame to a hardware frame |
| hysteresis |
Grow first stream into second stream by connecting components. |
| identity |
Calculate the Identity between two video streams. |
| idet |
Interlace detect Filter. |
| il |
Deinterleave or interleave fields. |
| inflate |
Apply inflate effect. |
| interlace |
Convert progressive video into interlaced. |
| interleave |
Temporally interleave video inputs. |
| kerndeint |
Apply kernel deinterlacing to the input. |
| kirsch |
Apply kirsch operator. |
| lagfun |
Slowly update darker pixels. |
| lenscorrection |
Rectify the image by correcting for lens distortion. |
| limiter |
Limit pixels components to the specified range. |
| loop |
Loop video frames. |
| lumakey |
Turns a certain luma into transparency. |
| lut |
Compute and apply a lookup table to the RGB/YUV input video. |
| lut1d |
Adjust colors using a 1D LUT. |
| lut2 |
Compute and apply a lookup table from two video inputs. |
| lut3d |
Adjust colors using a 3D LUT. |
| lutrgb |
Compute and apply a lookup table to the RGB input video. |
| lutyuv |
Compute and apply a lookup table to the YUV input video. |
| maskedclamp |
Clamp first stream with second stream and third stream. |
| maskedmax |
Apply filtering with maximum difference of two streams. |
| maskedmerge |
Merge first stream with second stream using third stream as mask. |
| maskedmin |
Apply filtering with minimum difference of two streams. |
| maskedthreshold |
Pick pixels comparing absolute difference of two streams with threshold. |
| maskfun |
Create Mask. |
| mcdeint |
Apply motion compensating deinterlacing. |
| median |
Apply Median filter. |
| mergeplanes |
Merge planes. |
| mestimate |
Generate motion vectors. |
| metadata |
Manipulate video frame metadata. |
| midequalizer |
Apply Midway Equalization. |
| minterpolate |
Frame rate conversion using Motion Interpolation. |
| mix |
Mix video inputs. |
| monochrome |
Convert video to gray using custom color filter. |
| mpdecimate |
Remove near-duplicate frames. |
| msad |
Calculate the MSAD between two video streams. |
| negate |
Negate input video. |
| nlmeans |
Non-local means denoiser. |
| nnedi |
Apply neural network edge directed interpolation intra-only deinterlacer. |
| noformat |
Force libavfilter not to use any of the specified pixel formats for the input to the next filter. |
| noise |
Add noise. |
| normalize |
Normalize RGB video. |
| null |
Pass the source unchanged to the output. |
| oscilloscope |
2D Video Oscilloscope. |
| overlay |
Overlay a video source on top of the input. |
| owdenoise |
Denoise using wavelets. |
| pad |
Pad the input video. |
| palettegen |
Find the optimal palette for a given stream. |
| paletteuse |
Use a palette to downsample an input video stream. |
| perms |
Set permissions for the output video frame. |
| perspective |
Correct the perspective of video. |
| phase |
Phase shift fields. |
| photosensitivity |
Filter out photosensitive epilepsy seizure-inducing flashes. |
| pixdesctest |
Test pixel format definitions. |
| pixscope |
Pixel data analysis. |
| pp |
Filter video using libpostproc. |
| pp7 |
Apply Postprocessing 7 filter. |
| premultiply |
PreMultiply first stream with first plane of second stream. |
| prewitt |
Apply prewitt operator. |
| pseudocolor |
Make pseudocolored video frames. |
| psnr |
Calculate the PSNR between two video streams. |
| pullup |
Pullup from field sequence to frames. |
| qp |
Change video quantization parameters. |
| random |
Return random frames. |
| readeia608 |
Read EIA-608 Closed Caption codes from input video and write them to frame metadata. |
| readvitc |
Read vertical interval timecode and write it to frame metadata. |
| realtime |
Slow down filtering to match realtime. |
| remap |
Remap pixels. |
| removegrain |
Remove grain. |
| removelogo |
Remove a TV logo based on a mask image. |
| repeatfields |
Hard repeat fields based on MPEG repeat field flag. |
| reverse |
Reverse a clip. |
| rgbashift |
Shift RGBA. |
| roberts |
Apply roberts cross operator. |
| rotate |
Rotate the input image. |
| sab |
Apply shape adaptive blur. |
| scale |
Scale the input video size and/or convert the image format. |
| scale2ref |
Scale the input video size and/or convert the image format to the given reference. |
| scdet |
Detect video scene change |
| scroll |
Scroll input video. |
| select |
Select video frames to pass in output. |
| selectivecolor |
Apply CMYK adjustments to specific color ranges. |
| sendcmd |
Send commands to filters. |
| separatefields |
Split input video frames into fields. |
| setdar |
Set the frame display aspect ratio. |
| setfield |
Force field for the output video frame. |
| setparams |
Force field, or color property for the output video frame. |
| setpts |
Set PTS for the output video frame. |
| setrange |
Force color range for the output video frame. |
| setsar |
Set the pixel sample aspect ratio. |
| settb |
Set timebase for the video output link. |
| shear |
Shear transform the input image. |
| showinfo |
Show textual information for each video frame. |
| showpalette |
Display frame palette. |
| shuffleframes |
Shuffle video frames. |
| shufflepixels |
Shuffle video pixels. |
| shuffleplanes |
Shuffle video planes. |
| signature |
Calculate the MPEG-7 video signature |
| smartblur |
Blur the input video without impacting the outlines. |
| sobel |
Apply sobel operator. |
| split |
將一個(gè)視頻流（或音頻流）分成幾個(gè)相同的流 |
| spp |
實(shí)現(xiàn)了一種稱為"SPP"的效果，可以用較少損失細(xì)節(jié)的方式降低視頻噪點(diǎn)。這個(gè)濾鏡主要基于 DCT（離散余弦變換）域技術(shù)，并且提供了不同強(qiáng)度的降噪選項(xiàng)。 |
| sr |
Apply DNN-based image super resolution to the input. |
| ssim |
Calculate the SSIM between two video streams. |
| stereo3d |
Convert video stereoscopic 3D view. |
| streamselect |
Select video streams |
| super2xsai |
Scale the input by 2x using the Super2xSaI pixel art algorithm. |
| swaprect |
Swap 2 rectangular objects in video. |
| swapuv |
Swap U and V components. |
| tblend |
Blend successive frames. |
| telecine |
Apply a telecine pattern. |
| thistogram |
Compute and draw a temporal histogram. |
| threshold |
Threshold first video stream using other video streams. |
| thumbnail |
從視頻中生成縮略圖 |
| tile |
Tile several successive frames together. |
| tinterlace |
Perform temporal field interlacing. |
| tlut2 |
Compute and apply a lookup table from two successive frames. |
| tmedian |
Pick median pixels from successive frames. |
| tmidequalizer |
Apply Temporal Midway Equalization. |
| tmix |
Mix successive video frames. |
| tonemap |
Conversion to/from different dynamic ranges. |
| tpad |
Temporarily pad video frames. |
| transpose |
Transpose input video. |
| trim |
Pick one continuous section from the input, drop the rest. |
| unpremultiply |
UnPreMultiply first stream with first plane of second stream. |
| unsharp |
Sharpen or blur the input video. |
| untile |
Untile a frame into a sequence of frames. |
| uspp |
Apply Ultra Simple / Slow Post-processing filter. |
| v360 |
Convert 360 projection of video. |
| vaguedenoiser |
Apply a Wavelet based Denoiser. |
| vectorscope |
Video vectorscope. |
| vflip |
用于垂直翻轉(zhuǎn)或鏡像視頻，此濾鏡會(huì)將視頻畫面上下顛倒過來(lái)，使畫面上部的內(nèi)容移動(dòng)到下部，下部的內(nèi)容移動(dòng)到上部。 |
| vfrdet |
Variable frame rate detect filter. |
| vibrance |
Boost or alter saturation. |
| vif V |
Calculate the VIF between two video streams. |
| vignette |
用于在視頻圖像上添加暗角效果，模仿經(jīng)典照相機(jī)鏡頭產(chǎn)生的自然光暗角或“暈影”效果。 |
| vmafmotion |
獲取視頻的平均VMAF運(yùn)動(dòng)得分，它是VMAF組成指標(biāo)之一。 |
| w3fdif |
Apply Martin Weston three field deinterlace. |
| waveform |
Video waveform monitor. |
| weave |
Weave input video fields into frames. |
| xbr |
Scale the input using xBR algorithm. |
| xfade |
Cross fade one video with another video. |
| xmedian |
Pick median pixels from several video inputs. |
| xstack |
Stack video inputs into custom layout. |
| yadif |
Deinterlace the input image. |
| yaepblur |
Yet another edge preserving blur filter. |
| zoompan |
Apply Zoom & Pan effect. |
| allrgb |
Generate all RGB colors. |
| allyuv |
Generate all yuv colors. |
| cellauto |
Create pattern generated by an elementary cellular automaton. |
| color |
Provide an uniformly colored input. |
| coreimagesrc |
Video source using image generators of CoreImage API. |
| gradients |
Draw a gradients. |
| haldclutsrc |
Provide an identity Hald CLUT. |
| mandelbrot |
Render a Mandelbrot fractal. |
| mptestsrc |
Generate various test pattern. |
| nullsrc |
是一個(gè)虛擬的視頻源，可以創(chuàng)建一個(gè)沒有實(shí)際視頻數(shù)據(jù)的視頻流，通常用于測(cè)試或者作為復(fù)雜濾鏡鏈中的占位符。 |
| pal75bars |
Generate PAL 75% color bars. |
| pal100bars |
Generate PAL 100% color bars. |
| rgbtestsrc |
Generate RGB test pattern. |
| sierpinski |
Render a Sierpinski fractal. |
| smptebars |
Generate SMPTE color bars. |
| smptehdbars |
Generate SMPTE HD color bars. |
| abitscope |
Convert input audio to audio bit scope video output. |
| adrawgraph |
Draw a graph using input audio metadata. |
| agraphmonitor |
Show various filtergraph stats. |
| ahistogram |
Convert input audio to histogram video output. |
| aphasemeter |
Convert input audio to phase meter video output. |
| avectorscope |
Convert input audio to vectorscope video output. |
| concat |
Concatenate audio and video streams. |
| showcqt |
Convert input audio to a CQT (Constant/Clamped Q Transform) spectrum video output. |
| showfreqs |
Convert input audio to a frequencies video output. |
| showspatial |
Convert input audio to a spatial video output. |
| showspectrum |
Convert input audio to a spectrum video output. |
| showspectrumpic |
Convert input audio to a spectrum video output single picture. |
| showvolume |
生成一個(gè)視頻條，顯示音頻的實(shí)時(shí)音量水平，這個(gè)條隨音量的高低和通道數(shù)變化，還可以顯示音量的峰值。 |
| showwaves |
生成一個(gè)類似振蕩器波形的視頻流，顯示音頻波形。 |
| showwavespic |
生成單張代表音頻波形的圖片，而不是視頻流。 |
| spectrumsynth |
Convert input spectrum videos to audio output. |
| amovie |
用于讀取外部的音頻文件，并將其作為音頻源注入到復(fù)雜的濾鏡圖中； |
| movie |
用于加載外部視頻文件，并將其作為視頻源注入到濾鏡圖中。這個(gè)濾鏡常用于導(dǎo)入水印或者其他視頻素材 |
| afifo |
Buffer input frames and send them when they are requested. |
| fifo |
Buffer input images and send them when they are requested. |
| abuffer |
Buffer audio frames, and make them accessible to the filterchain. |
| buffer |
Buffer video frames, and make them accessible to the filterchain. |
| abuffersink |
Buffer audio frames, and make them available to the end of the filter graph. |
| buffersink |
Buffer video frames, and make them available to the end of the filter graph. |
