FFmpeg滤镜完整列表

FFmpeg滤镜完整列表

|-------------------|-------------------------------------------------------------------------------------------------------------------------------------------|
| 滤镜名称 | 用途 |
| acompressor | 压缩音频信号,当输入信号超过某个预设阈值时，压缩器就会开始工作。该滤镜使音量大的部分变得不那么响亮，而音量小的部分相对变得响亮，这样就可以使整体听起来更加均衡，常用于音乐制作、广播和现场混音。 |
| acontrast | 调整音频信号的对比度，支持传入参数contrast，范围是0至100，默认是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 | 用于对输入音频的每个样本值进行算术求值和转换。 |
| aexciter | Enhance high frequency part of audio. |
| afade | 实现音频的淡入（fade-in）和淡出（fade-out）效果,让音频平滑地开始或结束，使音频过渡不那么突兀。 |
| 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 | 用于在音频过滤处理管道中操作音频流的元数据 |
| amix | 将所有输入音频的通道数、采样率和格式匹配起来，输出一个统一的音频轨道。amix 功能在需要将多个音频源合成为一个单一音轨的场景，比如混音、音乐制作和视频编辑中非常实用。 |
| 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 | 将一个音频流分成多个相同的音频流。 |
| 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 | 重新映射或改变音频流中的各个声道。它能够选择性地改变声道的顺序，或者从多声道音频中剥离出特定的声道。 |
| channelsplit | 将每个声道作为单独的单声道音频流输出 |
| 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 | 动态地调整音频轨道的音量，提供类似于压缩器/限制器但更先进的功能。这个滤镜能够在不明显改变原始音频动态范围的前提下，减小响度差异并均衡整体音量。 |
| earwax | Widen the stereo image. |
| ebur128 | 用于测量音频信号响度的工具，它实现了欧洲广播联盟（EBU，European Broadcasting Union）R 128标准的响度测量。 |
| loudnorm | 实现EBU R128标准的响度归一化滤镜，其主要用途是自动调整音频轨道的响度，使之达到一致的、指定的响度水平。 |
| equalizer | 用来调整音频信号的特定频率段的增益，实现类似于图形均衡器的功能。 |
| 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 | 实现低通滤波器功能，它允许频率低于某一截止频率的信号通过，同时减弱高于这个截止频率的信号； |
| lowshelf | 调整截止点以下频率的增益，而不是切断它们。 |
| 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 | 用于检测音频中的静音部分，它可以对音频进行分析并记录下静音发生的时间和持续时长。 |
| silenceremove | 用于去除或调整音频流中的静音部分，使用时可以指定要移除静音部分的参数，例如静音阈值、最小持续时间、以及在静音前后保留的音频长度。 |
| 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 | 调整音频信号的音量。你可以使用该滤镜增加或降低音频轨道的整体音量级别。 |
| volumedetect | 检测音频信号的音量级别，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 | 检测视频中的黑色片段，该滤镜能够识别出黑场的开始和持续时间。 |
| blackframe | 检测视频中的黑色帧。与 blackdetect 不同，blackframe 专注于单个黑色帧而非片段，并给出黑色帧对应的阈值和数量。 |
| blend | Blend two video frames into each other. |
| bm3d | Block-Matching 3D denoiser. |
| boxblur | 对视频帧实施盒式模糊效果。"盒式模糊"（Box Blur）又称为"均值模糊"（Mean Blur），是一种简单有效的模糊算法，通过均匀地取周围像素的平均值来模糊每个像素点。boxblur 滤镜可以应用于整个视频帧，也可以单独应用于亮度（luma）和色度（chroma）通道。 |
| chromakey | 将视频中的特定颜色（通常是绿屏或蓝屏）替换成其他背景图像或视频。 |
| 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 | 自动检测视频帧的边缘并建议需要裁剪的区域和尺寸，这是视频后期处理中常用的功能，特别是在处理旧电影或电视节目时，从而消除不必要的黑色边框，使画面更加干净。 |
| crop | 根据给出的参数来裁剪视频; |
| 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 | 用于移除视频中的水印或徽标。这个滤镜可以在不影响视频其他部分质量的情况下，尽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 | 通过边缘检测算法来突出显示图像中的线条和边缘，这通常用于视频分析、艺术效果或前期的视觉效果制作。 |
| 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 | 用于将多个视频流水平堆叠（并排）在一起。主要用于在一行中创建分屏效果，比如同一画面同时展示两个或多个不同画面的视频。 |
| vstack | 用于垂直叠加（竖向排列）多个视频流，类似于 hstack 滤镜的水平叠加功能。 |
| 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 | 将一个视频流（或音频流）分成几个相同的流 |
| spp | 实现了一种称为"SPP"的效果，可以用较少损失细节的方式降低视频噪点。这个滤镜主要基于 DCT（离散余弦变换）域技术，并且提供了不同强度的降噪选项。 |
| 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 | 从视频中生成缩略图 |
| 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 | 用于垂直翻转或镜像视频，此滤镜会将视频画面上下颠倒过来，使画面上部的内容移动到下部，下部的内容移动到上部。 |
| vfrdet | Variable frame rate detect filter. |
| vibrance | Boost or alter saturation. |
| vif V | Calculate the VIF between two video streams. |
| vignette | 用于在视频图像上添加暗角效果，模仿经典照相机镜头产生的自然光暗角或"晕影"效果。 |
| vmafmotion | 获取视频的平均VMAF运动得分，它是VMAF组成指标之一。 |
| 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 | 是一个虚拟的视频源，可以创建一个没有实际视频数据的视频流，通常用于测试或者作为复杂滤镜链中的占位符。 |
| 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 | 生成一个视频条，显示音频的实时音量水平，这个条随音量的高低和通道数变化，还可以显示音量的峰值。 |
| showwaves | 生成一个类似振荡器波形的视频流，显示音频波形。 |
| showwavespic | 生成单张代表音频波形的图片，而不是视频流。 |
| spectrumsynth | Convert input spectrum videos to audio output. |
| amovie | 用于读取外部的音频文件，并将其作为音频源注入到复杂的滤镜图中； |
| movie | 用于加载外部视频文件，并将其作为视频源注入到滤镜图中。这个滤镜常用于导入水印或者其他视频素材 |
| 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. |

ffmpeg -i main_video.mp4 -filter_complex "movie=logo.png[logo];[0:v][logo]overlay=W-w-10:H-h-10" output.mp4

ffmpeg -i video.mp4 -filter_complex "amovie=audio.mp3[a];[0:a][a]amix" output.mp4

ffmpeg -i in.m4a -filter_complex "dynaudnorm=f=150:g=15" out.m4a

ffplay -i INPUT -vf "crop=iw/2:ih:0:0,split[left][tmp];[tmp]hflip[right];[left][right] hstack"

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