Audio/video filters
The available options can depend on the version of the underlying encoding tools that Transloadit uses for the following Robots:
- 🤖/audio/artwork
- 🤖/audio/concat
- 🤖/audio/split
- 🤖/audio/encode
- 🤖/audio/loop
- 🤖/audio/merge
- 🤖/audio/waveform
- 🤖/meta/write
- 🤖/video/adaptive
- 🤖/video/artwork
- 🤖/video/concat
- 🤖/video/encode
- 🤖/video/merge
- 🤖/video/split
- 🤖/video/subtitle
- 🤖/video/thumbs
Transloadit recommends having: ffmpeg_stack: "v7" in these Robots’ Assembly Instructions. We are intimately aware of how important continuity is for our customers, so stack version upgrades are always opt-in. Stack versions are typically supported for many years before we start issuing deprecation warnings (for example, we had been supporting "v1.0.0" for 11 years before we deprecated it).
ffmpeg_stack
| Name | Description | v5 | v6 | v7 |
|---|---|---|---|---|
a3dscope | Convert input audio to 3d scope video output. | No | Yes | Yes |
aap | Apply Affine Projection algorithm to first audio stream. | No | No | Yes |
abench | Benchmark part of a filtergraph. | Yes | Yes | Yes |
abitscope | Convert input audio to audio bit scope video output. | Yes | Yes | Yes |
abuffer | Buffer audio frames, and make them accessible to the filterchain. | Yes | Yes | Yes |
abuffersink | Buffer audio frames, and make them available to the end of the filter graph. | Yes | Yes | Yes |
acompressor | Audio compressor. | Yes | Yes | Yes |
acontrast | Simple audio dynamic range compression/expansion filter. | Yes | Yes | Yes |
acopy | Copy the input audio unchanged to the output. | Yes | Yes | Yes |
acrossfade | Cross fade two input audio streams. | Yes | Yes | Yes |
acrossover | Split audio into per-bands streams. | Yes | Yes | Yes |
acrusher | Reduce audio bit resolution. | Yes | Yes | Yes |
acue | Delay filtering to match a cue. | Yes | Yes | Yes |
addroi | Add region of interest to frame. | Yes | Yes | Yes |
adeclick | Remove impulsive noise from input audio. | Yes | Yes | Yes |
adeclip | Remove clipping from input audio. | Yes | Yes | Yes |
adecorrelate | Apply decorrelation to input audio. | Yes | Yes | Yes |
adelay | Delay one or more audio channels. | Yes | Yes | Yes |
adenorm | Remedy denormals by adding extremely low-level noise. | Yes | Yes | Yes |
aderivative | Compute derivative of input audio. | Yes | Yes | Yes |
adrawgraph | Draw a graph using input audio metadata. | Yes | Yes | Yes |
adrc | Audio Spectral Dynamic Range Controller. | No | Yes | Yes |
adynamicequalizer | Apply Dynamic Equalization of input audio. | Yes | Yes | Yes |
adynamicsmooth | Apply Dynamic Smoothing of input audio. | Yes | Yes | Yes |
aecho | Add echoing to the audio. | Yes | Yes | Yes |
aemphasis | Audio emphasis. | Yes | Yes | Yes |
aeval | Filter audio signal according to a specified expression. | Yes | Yes | Yes |
aevalsrc | Generate an audio signal generated by an expression. | Yes | Yes | Yes |
aexciter | Enhance high frequency part of audio. | Yes | Yes | Yes |
afade | Fade in/out input audio. | Yes | Yes | Yes |
afdelaysrc | Generate a Fractional delay FIR coefficients. | No | Yes | Yes |
afftdn | Denoise audio samples using FFT. | Yes | Yes | Yes |
afftfilt | Apply arbitrary expressions to samples in frequency domain. | Yes | Yes | Yes |
afifo | Buffer input frames and send them when they are requested. | Yes | Yes | No |
afir | Apply Finite Impulse Response filter with supplied coefficients in additional stream(s). | Yes | Yes | Yes |
afireqsrc | Generate a FIR equalizer coefficients audio stream. | No | Yes | Yes |
afirsrc | Generate a FIR coefficients audio stream. | Yes | Yes | Yes |
aformat | Convert the input audio to one of the specified formats. | Yes | Yes | Yes |
afreqshift | Apply frequency shifting to input audio. | Yes | Yes | Yes |
afwtdn | Denoise audio stream using Wavelets. | Yes | Yes | Yes |
agate | Audio gate. | Yes | Yes | Yes |
agraphmonitor | Show various filtergraph stats. | Yes | Yes | Yes |
ahistogram | Convert input audio to histogram video output. | Yes | Yes | Yes |
aiir | Apply Infinite Impulse Response filter with supplied coefficients. | Yes | Yes | Yes |
aintegral | Compute integral of input audio. | Yes | Yes | Yes |
ainterleave | Temporally interleave audio inputs. | Yes | Yes | Yes |
alatency | Report audio filtering latency. | Yes | Yes | Yes |
alimiter | Audio lookahead limiter. | Yes | Yes | Yes |
allpass | Apply a two-pole all-pass filter. | Yes | Yes | Yes |
allrgb | Generate all RGB colors. | Yes | Yes | Yes |
allyuv | Generate all yuv colors. | Yes | Yes | Yes |
aloop | Loop audio samples. | Yes | Yes | Yes |
alphaextract | Extract an alpha channel as a grayscale image component. | Yes | Yes | Yes |
alphamerge | Copy the luma value of the second input into the alpha channel of the first input. | Yes | Yes | Yes |
amerge | Merge two or more audio streams into a single multi-channel stream. | Yes | Yes | Yes |
ametadata | Manipulate audio frame metadata. | Yes | Yes | Yes |
amix | Audio mixing. | Yes | Yes | Yes |
amovie | Read audio from a movie source. | Yes | Yes | Yes |
amplify | Amplify changes between successive video frames. | Yes | Yes | Yes |
amultiply | Multiply two audio streams. | Yes | Yes | Yes |
anequalizer | Apply high-order audio parametric multi band equalizer. | Yes | Yes | Yes |
anlmdn | Reduce broadband noise from stream using Non-Local Means. | Yes | Yes | Yes |
anlmf | Apply Normalized Least-Mean-Fourth algorithm to first audio stream. | Yes | Yes | Yes |
anlms | Apply Normalized Least-Mean-Squares algorithm to first audio stream. | Yes | Yes | Yes |
anoisesrc | Generate a noise audio signal. | Yes | Yes | Yes |
anull | Pass the source unchanged to the output. | Yes | Yes | Yes |
anullsink | Do absolutely nothing with the input audio. | Yes | Yes | Yes |
anullsrc | Null audio source, return empty audio frames. | Yes | Yes | Yes |
apad | Pad audio with silence. | Yes | Yes | Yes |
aperms | Set permissions for the output audio frame. | Yes | Yes | Yes |
aphasemeter | Convert input audio to phase meter video output. | Yes | Yes | Yes |
aphaser | Add a phasing effect to the audio. | Yes | Yes | Yes |
aphaseshift | Apply phase shifting to input audio. | Yes | Yes | Yes |
apsnr | Measure Audio Peak Signal-to-Noise Ratio. | No | Yes | Yes |
apsyclip | Audio Psychoacoustic Clipper. | Yes | Yes | Yes |
apulsator | Audio pulsator. | Yes | Yes | Yes |
arealtime | Slow down filtering to match realtime. | Yes | Yes | Yes |
aresample | Resample audio data. | Yes | Yes | Yes |
areverse | Reverse an audio clip. | Yes | Yes | Yes |
arls | Apply Recursive Least Squares algorithm to first audio stream. | No | Yes | Yes |
arnndn | Reduce noise from speech using Recurrent Neural Networks. | Yes | Yes | Yes |
asdr | Measure Audio Signal-to-Distortion Ratio. | Yes | Yes | Yes |
asegment | Segment audio stream. | Yes | Yes | Yes |
aselect | Select audio frames to pass in output. | Yes | Yes | Yes |
asendcmd | Send commands to filters. | Yes | Yes | Yes |
asetnsamples | Set the number of samples for each output audio frames. | Yes | Yes | Yes |
asetpts | Set PTS for the output audio frame. | Yes | Yes | Yes |
asetrate | Change the sample rate without altering the data. | Yes | Yes | Yes |
asettb | Set timebase for the audio output link. | Yes | Yes | Yes |
ashowinfo | Show textual information for each audio frame. | Yes | Yes | Yes |
asidedata | Manipulate audio frame side data. | Yes | Yes | Yes |
asisdr | Measure Audio Scale-Invariant Signal-to-Distortion Ratio. | No | Yes | Yes |
asoftclip | Audio Soft Clipper. | Yes | Yes | Yes |
aspectralstats | Show frequency domain statistics about audio frames. | Yes | Yes | Yes |
asplit | Pass on the audio input to N audio outputs. | Yes | Yes | Yes |
ass | Render ASS subtitles onto input video using the libass library. | Yes | Yes | Yes |
astats | Show time domain statistics about audio frames. | Yes | Yes | Yes |
astreamselect | Select audio streams | Yes | Yes | Yes |
asubboost | Boost subwoofer frequencies. | Yes | Yes | Yes |
asubcut | Cut subwoofer frequencies. | Yes | Yes | Yes |
asupercut | Cut super frequencies. | Yes | Yes | Yes |
asuperpass | Apply high order Butterworth band-pass filter. | Yes | Yes | Yes |
asuperstop | Apply high order Butterworth band-stop filter. | Yes | Yes | Yes |
atadenoise | Apply an Adaptive Temporal Averaging Denoiser. | Yes | Yes | Yes |
atempo | Adjust audio tempo. | Yes | Yes | Yes |
atilt | Apply spectral tilt to audio. | Yes | Yes | Yes |
atrim | Pick one continuous section from the input, drop the rest. | Yes | Yes | Yes |
avectorscope | Convert input audio to vectorscope video output. | Yes | Yes | Yes |
avgblur | Apply Average Blur filter. | Yes | Yes | Yes |
avgblur_opencl | Apply average blur filter | No | Yes | Yes |
avgblur_vulkan | Apply avgblur mask to input video | Yes | Yes | Yes |
avsynctest | Generate an Audio Video Sync Test. | No | Yes | Yes |
axcorrelate | Cross-correlate two audio streams. | Yes | Yes | Yes |
azmq | Receive commands through ZMQ and broker them to filters. | Yes | Yes | Yes |
backgroundkey | Turns a static background into transparency. | No | Yes | Yes |
bandpass | Apply a two-pole Butterworth band-pass filter. | Yes | Yes | Yes |
bandreject | Apply a two-pole Butterworth band-reject filter. | Yes | Yes | Yes |
bass | Boost or cut lower frequencies. | Yes | Yes | Yes |
bbox | Compute bounding box for each frame. | Yes | Yes | Yes |
bench | Benchmark part of a filtergraph. | Yes | Yes | Yes |
bilateral | Apply Bilateral filter. | Yes | Yes | Yes |
bilateral_cuda | GPU accelerated bilateral filter | No | Yes | Yes |
biquad | Apply a biquad IIR filter with the given coefficients. | Yes | Yes | Yes |
bitplanenoise | Measure bit plane noise. | Yes | Yes | Yes |
blackdetect | Detect video intervals that are (almost) black. | Yes | Yes | Yes |
blackframe | Detect frames that are (almost) black. | Yes | Yes | Yes |
blend | Blend two video frames into each other. | Yes | Yes | Yes |
blend_vulkan | Blend two video frames in Vulkan | No | Yes | Yes |
blockdetect | Blockdetect filter. | No | Yes | Yes |
blurdetect | Blurdetect filter. | No | Yes | Yes |
bm3d | Block-Matching 3D denoiser. | Yes | Yes | Yes |
boxblur | Blur the input. | Yes | Yes | Yes |
boxblur_opencl | Apply boxblur filter to input video | No | Yes | Yes |
bs2b | Bauer stereo-to-binaural filter. | Yes | Yes | Yes |
buffer | Buffer video frames, and make them accessible to the filterchain. | Yes | Yes | Yes |
buffersink | Buffer video frames, and make them available to the end of the filter graph. | Yes | Yes | Yes |
bwdif | Deinterlace the input image. | Yes | Yes | Yes |
bwdif_cuda | Deinterlace CUDA frames | No | Yes | Yes |
bwdif_vulkan | Deinterlace Vulkan frames via bwdif | No | Yes | Yes |
cas | Contrast Adaptive Sharpen. | Yes | Yes | Yes |
ccrepack | Repack CEA-708 closed caption metadata | No | Yes | Yes |
cellauto | Create pattern generated by an elementary cellular automaton. | Yes | Yes | Yes |
channelmap | Remap audio channels. | Yes | Yes | Yes |
channelsplit | Split audio into per-channel streams. | Yes | Yes | Yes |
chorus | Add a chorus effect to the audio. | Yes | Yes | Yes |
chromaber_vulkan | Offset chroma of input video (chromatic aberration) | Yes | Yes | Yes |
chromahold | Turns a certain color range into gray. | Yes | Yes | Yes |
chromakey | Turns a certain color into transparency. Operates on YUV colors. | Yes | Yes | Yes |
chromakey_cuda | GPU accelerated chromakey filter | No | Yes | Yes |
chromanr | Reduce chrominance noise. | Yes | Yes | Yes |
chromashift | Shift chroma. | Yes | Yes | Yes |
ciescope | Video CIE scope. | Yes | Yes | Yes |
codecview | Visualize information about some codecs. | Yes | Yes | Yes |
color | Provide an uniformly colored input. | Yes | Yes | Yes |
color_vulkan | Generate a constant color (Vulkan) | No | Yes | Yes |
colorbalance | Adjust the color balance. | Yes | Yes | Yes |
colorchannelmixer | Adjust colors by mixing color channels. | Yes | Yes | Yes |
colorchart | Generate color checker chart. | No | Yes | Yes |
colorcontrast | Adjust color contrast between RGB components. | Yes | Yes | Yes |
colorcorrect | Adjust color white balance selectively for blacks and whites. | Yes | Yes | Yes |
colorhold | Turns a certain color range into gray. Operates on RGB colors. | Yes | Yes | Yes |
colorize | Overlay a solid color on the video stream. | Yes | Yes | Yes |
colorkey | Turns a certain color into transparency. Operates on RGB colors. | Yes | Yes | Yes |
colorkey_opencl | Turns a certain color into transparency. Operates on RGB colors. | No | Yes | Yes |
colorlevels | Adjust the color levels. | Yes | Yes | Yes |
colormap | Apply custom Color Maps to video stream. | No | Yes | Yes |
colormatrix | Convert color matrix. | Yes | Yes | Yes |
colorspace | Convert between colorspaces. | Yes | Yes | Yes |
colorspace_cuda | CUDA accelerated video color converter | No | Yes | Yes |
colorspectrum | Generate colors spectrum. | Yes | Yes | Yes |
colortemperature | Adjust color temperature of video. | Yes | Yes | Yes |
compand | Compress or expand audio dynamic range. | Yes | Yes | Yes |
compensationdelay | Audio Compensation Delay Line. | Yes | Yes | Yes |
concat | Concatenate audio and video streams. | Yes | Yes | Yes |
convolution | Apply convolution filter. | Yes | Yes | Yes |
convolution_opencl | Apply convolution mask to input video | No | Yes | Yes |
convolve | Convolve first video stream with second video stream. | Yes | Yes | Yes |
copy | Copy the input video unchanged to the output. | Yes | Yes | Yes |
corr | Calculate the correlation between two video streams. | No | Yes | Yes |
cover_rect | Find and cover a user specified object. | Yes | Yes | Yes |
crop | Crop the input video. | Yes | Yes | Yes |
cropdetect | Auto-detect crop size. | Yes | Yes | Yes |
crossfeed | Apply headphone crossfeed filter. | Yes | Yes | Yes |
crystalizer | Simple audio noise sharpening filter. | Yes | Yes | Yes |
cue | Delay filtering to match a cue. | Yes | Yes | Yes |
curves | Adjust components curves. | Yes | Yes | Yes |
datascope | Video data analysis. | Yes | Yes | Yes |
dblur | Apply Directional Blur filter. | Yes | Yes | Yes |
dcshift | Apply a DC shift to the audio. | Yes | Yes | Yes |
dctdnoiz | Denoise frames using 2D DCT. | Yes | Yes | Yes |
deband | Debands video. | Yes | Yes | Yes |
deblock | Deblock video. | Yes | Yes | Yes |
decimate | Decimate frames (post field matching filter). | Yes | Yes | Yes |
deconvolve | Deconvolve first video stream with second video stream. | Yes | Yes | Yes |
dedot | Reduce cross-luminance and cross-color. | Yes | Yes | Yes |
deesser | Apply de-essing to the audio. | Yes | Yes | Yes |
deflate | Apply deflate effect. | Yes | Yes | Yes |
deflicker | Remove temporal frame luminance variations. | Yes | Yes | Yes |
deinterlace_qsv | QuickSync video deinterlacing | Yes | Yes | Yes |
deinterlace_vaapi | Deinterlacing of VAAPI surfaces | Yes | Yes | Yes |
ffmpeg_stack
| Name | Description | v5 | v6 | v7 |
|---|---|---|---|---|
a3dscope | Convert input audio to 3d scope video output. | No | Yes | Yes |
aap | Apply Affine Projection algorithm to first audio stream. | No | No | Yes |
adrc | Audio Spectral Dynamic Range Controller. | No | Yes | Yes |
afdelaysrc | Generate a Fractional delay FIR coefficients. | No | Yes | Yes |
afifo | Buffer input frames and send them when they are requested. | Yes | Yes | No |
afireqsrc | Generate a FIR equalizer coefficients audio stream. | No | Yes | Yes |
apsnr | Measure Audio Peak Signal-to-Noise Ratio. | No | Yes | Yes |
arls | Apply Recursive Least Squares algorithm to first audio stream. | No | Yes | Yes |
asisdr | Measure Audio Scale-Invariant Signal-to-Distortion Ratio. | No | Yes | Yes |
avgblur_opencl | Apply average blur filter | No | Yes | Yes |
avsynctest | Generate an Audio Video Sync Test. | No | Yes | Yes |
backgroundkey | Turns a static background into transparency. | No | Yes | Yes |
bilateral_cuda | GPU accelerated bilateral filter | No | Yes | Yes |
blend_vulkan | Blend two video frames in Vulkan | No | Yes | Yes |
blockdetect | Blockdetect filter. | No | Yes | Yes |
blurdetect | Blurdetect filter. | No | Yes | Yes |
boxblur_opencl | Apply boxblur filter to input video | No | Yes | Yes |
bwdif_cuda | Deinterlace CUDA frames | No | Yes | Yes |
bwdif_vulkan | Deinterlace Vulkan frames via bwdif | No | Yes | Yes |
ccrepack | Repack CEA-708 closed caption metadata | No | Yes | Yes |
chromakey_cuda | GPU accelerated chromakey filter | No | Yes | Yes |
color_vulkan | Generate a constant color (Vulkan) | No | Yes | Yes |
colorchart | Generate color checker chart. | No | Yes | Yes |
colorkey_opencl | Turns a certain color into transparency. Operates on RGB colors. | No | Yes | Yes |
colormap | Apply custom Color Maps to video stream. | No | Yes | Yes |
colorspace_cuda | CUDA accelerated video color converter | No | Yes | Yes |
convolution_opencl | Apply convolution mask to input video | No | Yes | Yes |
corr | Calculate the correlation between two video streams. | No | Yes | Yes |
deshake_opencl | Feature-point based video stabilization filter | No | Yes | Yes |
dialoguenhance | Audio Dialogue Enhancement. | No | Yes | Yes |
dilation_opencl | Apply dilation effect | No | Yes | Yes |
erosion_opencl | Apply erosion effect | No | Yes | Yes |
feedback | Apply feedback video filter. | No | Yes | Yes |
fifo | Buffer input images and send them when they are requested. | Yes | Yes | No |
flite | Synthesize voice from text using libflite. | No | Yes | Yes |
fsync | Synchronize video frames from external source. | No | No | Yes |
hstack_qsv | "Quick Sync Video" hstack | No | Yes | Yes |
hstack_vaapi | "VA-API" hstack | No | Yes | Yes |
libplacebo | Apply various GPU filters from libplacebo | No | Yes | Yes |
mcdeint | Apply motion compensating deinterlacing. | No | Yes | Yes |
multiply | Multiply first video stream with second video stream. | No | Yes | Yes |
nlmeans_opencl | Non-local means denoiser through OpenCL | No | Yes | Yes |
nlmeans_vulkan | Non-local means denoiser (Vulkan) | No | Yes | Yes |
openclsrc | Generate video using an OpenCL program | No | Yes | Yes |
overlay_cuda | Overlay one video on top of another using CUDA | No | Yes | Yes |
overlay_opencl | Overlay one video on top of another | No | Yes | Yes |
overlay_vaapi | Overlay one video on top of another | No | Yes | Yes |
pad_opencl | Pad the input video. | No | Yes | Yes |
pixelize | Pixelize video. | No | Yes | Yes |
prewitt_opencl | Apply prewitt operator | No | Yes | Yes |
program_opencl | Filter video using an OpenCL program | No | Yes | Yes |
qrencode | Draw a QR code on top of video frames. | No | No | Yes |
qrencodesrc | Generate a QR code. | No | No | Yes |
quirc | Decode and show QR codes content. | No | No | Yes |
remap_opencl | Remap pixels using OpenCL. | No | Yes | Yes |
roberts_opencl | Apply roberts operator | No | Yes | Yes |
scale_cuda | GPU accelerated video resizer | No | Yes | Yes |
showcwt | Convert input audio to a CWT (Continuous Wavelet Transform) spectrum video output. | No | Yes | Yes |
siti | Calculate spatial information (SI) and temporal information (TI). | No | Yes | Yes |
sobel_opencl | Apply sobel operator | No | Yes | Yes |
ssim360 | Calculate the SSIM between two 360 video streams. | No | Yes | Yes |
thumbnail_cuda | Select the most representative frame in a given sequence of consecutive frames. | No | Yes | Yes |
tiltandshift | Generate a tilt-and-shift'd video. | No | No | Yes |
tiltshelf | Apply a tilt shelf filter. | No | Yes | Yes |
tonemap_opencl | Perform HDR to SDR conversion with tonemapping. | No | Yes | Yes |
transpose_opencl | Transpose input video | No | Yes | Yes |
unsharp_opencl | Apply unsharp mask to input video | No | Yes | Yes |
uspp | Apply Ultra Simple / Slow Post-processing filter. | No | Yes | Yes |
virtualbass | Audio Virtual Bass. | No | Yes | Yes |
vstack_qsv | "Quick Sync Video" vstack | No | Yes | Yes |
vstack_vaapi | "VA-API" vstack | No | Yes | Yes |
xfade_opencl | Cross fade one video with another video. | No | Yes | Yes |
xfade_vulkan | Cross fade one video with another video. | No | Yes | Yes |
xstack_qsv | "Quick Sync Video" xstack | No | Yes | Yes |
xstack_vaapi | "VA-API" xstack | No | Yes | Yes |
yadif_cuda | Deinterlace CUDA frames | No | Yes | Yes |
zoneplate | Generate zone-plate. | No | Yes | Yes |