Effect reference - Rendobar

Every entry of an effects list. An effect goes on a clip, on a track, or on the timeline itself, and the list runs in the order you write it. Any entry takes start and length to run for part of its clip, and a parameter marked animatable takes keyframes.

Color

`color`

Grade the picture by hand. Every parameter is optional, and one left out leaves that quality unchanged.

Parameter	Type	What it does
`brightness`	number	-1 to 1, 0 = unchanged. Small moves (0.05 to 0.15) read as exposure lifts. min -1, max 1, animatable.
`contrast`	number	0 to 4, 1 = unchanged. 1.1 to 1.4 adds punch, above 2 crushes. min 0, max 4, animatable.
`saturation`	number	0 to 3, 1 = unchanged. 0 is black and white, 1.2 to 1.4 is a vivid social look. min 0, max 3, animatable.
`gamma`	number	0.1 to 10, 1 = unchanged. Above 1 lifts midtones and shadows. min 0.1, max 10, animatable.
`hue`	number	Hue rotation in degrees, 0 = unchanged. min -180, max 180, in deg.
`temperature`	number	Colour temperature in kelvin, about 6500 is neutral. Lower is warm and orange, higher is cool and blue. min 1000, max 40000, in K.

`look`

A one-word look: greyscale, boost (vivid social pop), muted (desaturated, cinematic), lighten and darken (exposure), contrast, negative, sepia (brown archive tone), oldFilm (sepia with grain, dust, scratches, projector flicker and a vignette).

Parameter	Type	What it does
`name`	`"greyscale"` \| `"negative"` \| `"boost"` \| `"muted"` \| `"lighten"` \| `"darken"` \| `"contrast"` \| `"sepia"` \| `"oldFilm"`	Which look.

`blur`

Soften the picture. 5 to 15 makes a backdrop that keeps text over it readable.

Parameter	Type	What it does
`radius`	number	How far the blur spreads, in pixels. 0 is no blur. min 0, in px, animatable.

`sharpen`

Crisp up soft footage.

Parameter	Type	What it does
`amount`	number	0 to 1. 0.2 to 0.6 is subtle, 1 is as sharp as it goes. default `0.4`, min 0, max 1, animatable.

`denoise`

Clean the grain a small sensor adds in low light. Works across neighbouring frames as well as inside each one.

Parameter	Type	What it does
`amount`	number	0 to 1. 0.3 to 0.6 cleans a dark phone clip, higher starts to smear fine detail. default `0.55`, min 0, max 1, animatable.

`glow`

Make the bright parts of the picture bloom. Best on lights against a dark frame: a city at night, a stage, a candle.

Parameter	Type	What it does
`amount`	number	0 to 1, how far the bloom spreads. default `0.45`, min 0, max 1, animatable.

`grain`

A layer of film grain, so digital footage feels less clinical.

Parameter	Type	What it does
`amount`	number	0 to 1. 0.2 to 0.35 is a light film stock, above 0.6 is heavy and deliberate. default `0.28`, min 0, max 1, animatable.

`lut`

Grade the picture with a 3D LUT, the .cube file a colourist or a grading app exports.

Parameter	Type	What it does
`src`	file	URL of the LUT: a 3D .cube file, the kind DaVinci Resolve, Premiere and most LUT packs export.

`vignette`

Darken the corners to pull the eye to the middle of the frame.

Parameter	Type	What it does
`amount`	number	0 to 1, how dark the corners get. 1 is black. default `0.6`, min 0, max 1, animatable.
`radius`	number	0 to 1, how much of the frame stays clear. Smaller closes in on the centre. default `0.5`, min 0, max 1, animatable.

Layers

`chromaKey`

Remove a solid background colour (green screen). Put the keyed clip on an UPPER track, and the removed area shows the track below.

Parameter	Type	What it does
`color`	color	The background colour to remove, hex like “#00FF00” for green screen.
`similarity`	number	How close a pixel must be to the key colour to become transparent. Raise toward 0.3 to 0.4 for uneven lighting. default `0.2`, min 0, max 1.

`blurRegion`

Blur one part of the picture and leave the rest sharp: a face, a number plate, a logo, a screen.

Parameter	Type	What it does
`x`	length	Centre of the region, measured from the left edge.
`y`	length	Centre of the region, measured from the top edge.
`width`	length	Width of the region.
`height`	length	Height of the region.
`shape`	`"ellipse"` \| `"rect"`	ellipse suits a face, rect a plate or a screen. default `"ellipse"`.
`radius`	number	How far the blur spreads inside the region, in pixels. 40 makes a face unrecognisable at 1080p. default `40`, min 0, in px, animatable.

`mask`

Show the clip only where an image says: white or opaque keeps it, black or clear cuts it away, grey fades it. A picture seen through a logo, or any shape you can draw.

Parameter	Type	What it does
`src`	file	URL of the mask image, png or jpg. It is stretched over the clip’s picture, so draw it at the same shape.
`channel`	`"luma"` \| `"alpha"`	What of the image decides: luma reads its brightness, for a black and white matte; alpha reads its transparency, for a png cut-out like a logo. default `"luma"`.

`outline`

A stroke round the edge of a layer that has transparency: a keyed subject, a picture in picture, a logo. With dropShadow it is the sticker look. Does nothing on a clip that fills the frame. Text and shapes have their own stroke.

Parameter	Type	What it does
`color`	color	Stroke colour, hex like “#FFFFFF”. default `"#FFFFFF"`.
`width`	number	Stroke width in pixels. The engine draws up to 20. default `8`, min 0, max 20, in px, animatable.

`dropShadow`

A soft shadow under a layer that has transparency, so a logo, a cut-out or a picture in picture lifts off what is behind it. Does nothing on a clip that fills the frame.

Parameter	Type	What it does
`color`	color	Shadow colour, hex. default `"#000000"`.
`opacity`	number	0 to 1, how dark the shadow is. default `0.6`, min 0, max 1.
`blur`	number	How soft the shadow’s edge is, in pixels. default `16`, min 0, max 100, in px, animatable.
`offsetX`	number	How far right the shadow falls, in pixels. Negative is left. default `0`, min -100, max 100, in px, animatable.
`offsetY`	number	How far down the shadow falls, in pixels. Negative is up. default `8`, min -100, max 100, in px, animatable.

Sound

`visualizer`

Draw the sound over the picture: the audiogram look. In the TIMELINE’s effects it draws the final mix, which is the usual place. On a track or a clip it draws that track’s or that clip’s own sound.

Parameter	Type	What it does
`kind`	`"waveform"` \| `"spectrum"`	waveform is a moving line, spectrum is frequency bars that jump with the sound. default `"waveform"`.
`color`	color	Colour of the drawing, hex. default `"#FFFFFF"`.
`x`	length	Centre of the drawing, measured from the left edge. default `"50%"`.
`y`	length	Centre of the drawing, measured from the top edge. The default sits it in the lower third. default `"77%"`.
`width`	length	Width of the drawing. default `"88%"`.
`height`	length	Height of the drawing. default `"38%"`.

`eq`

Three-band tone control. More bass and treble on a music bed, or less boom on a voice.

Parameter	Type	What it does
`bass`	number	Low end, a shelf from about 150 Hz down, in decibels. 0 is unchanged, 3 to 6 warms a music bed, negative thins a boomy voice. min -70, max 6, in dB.
`mid`	number	Middle, two octaves around 1 kHz, in decibels. 0 is unchanged. A few decibels down softens a harsh voice. min -70, max 6, in dB.
`treble`	number	Top end, a shelf from about 6 kHz up, in decibels. 0 is unchanged, 3 to 5 adds sparkle and presence. min -70, max 6, in dB.

`compressor`

Even out a voice, so quiet words and loud words sit at one level. The defaults suit speech.

Parameter	Type	What it does
`threshold`	number	The level above which it starts to turn the sound down, in decibels. default `-22`, min -30, max 0, in dB.
`ratio`	number	How hard it turns down what is over the threshold. 2 to 4 is natural on speech, above 10 is a limiter. default `4`, min 1, max 20.
`makeup`	number	Gain added back afterwards, in decibels, so the evened-out sound is as loud as before. default `9`, min 0, max 24, in dB.

`limiter`

Stop peaks from clipping. Add gain to make a track louder with no distortion, or leave gain at 0 as a safety net on the final mix.

Parameter	Type	What it does
`gain`	number	Gain going in, in decibels. 6 to 9 makes music clearly louder. default `0`, min -20, max 20, in dB.
`ceiling`	number	The level nothing is allowed over, in decibels. default `-1`, min -20, max 0, in dB.

`gate`

Close the microphone between phrases, so room noise drops away in the pauses.

Parameter	Type	What it does
`threshold`	number	Sound quieter than this is turned down, in decibels. Set it just above the noise. default `-30`, min -70, max 20, in dB.

`highPass`

Cut everything below a frequency. Wind, traffic and handling noise live under the voice.

Parameter	Type	What it does
`cutoff`	number	Frequencies below this are removed, in hertz. 80 to 120 cleans speech, 200 and up is drastic. default `100`, min 5, max 21600, in Hz.

`lowPass`

Cut everything above a frequency. Music from the next room, or a voice on the phone.

Parameter	Type	What it does
`cutoff`	number	Frequencies above this are removed, in hertz. default `700`, min 5, max 21600, in Hz.

`loudness`

Bring sound to a standard loudness, riding the level as it goes. -16 suits online video and podcasts, -23 is broadcast.

Parameter	Type	What it does
`target`	number	The loudness to aim for, in LUFS. default `-16`, min -50, max -10, in LUFS.

`pitch`

Raise or lower the pitch without changing the speed.

Parameter	Type	What it does
`semitones`	number	How far to shift. 12 is an octave up, -3 deepens a voice. min -36, max 36, in semitones.

`echo`

A repeat behind the sound.

Parameter	Type	What it does
`delay`	number	Time before the repeat, in seconds. The engine starts at 0.1. default `0.28`, min 0.1, max 10, in s.
`amount`	number	0 to 1, how loud the repeat is against the original. default `0.4`, min 0, max 1.

`reverb`

Place a dry voice in a hall.

Parameter	Type	What it does
`amount`	number	0 to 1, how much room you hear. 0.3 is a touch of air, 0.8 is a cathedral. default `0.5`, min 0, max 1.

`voiceDenoise`

Remove steady background noise from under speech: a river, a fan, a street. Trained on voices, so keep it off music.

Parameter	Type	What it does
`amount`	number	0 to 1, how much of the noise is removed. default `1`, min 0, max 1.

Stylize

`shake`

Handheld camera energy on a steady shot. The picture is zoomed in slightly so its edges never show.

Parameter	Type	What it does
`amount`	number	0 to 1, how far the frame moves. 0.2 to 0.4 is handheld, 1 is an earthquake. default `0.3`, min 0, max 1, animatable.
`speed`	number	0 to 1, how fast it moves. default `0.3`, min 0, max 1, animatable.

`glitch`

Digital break-up: blocks of the picture jump sideways and the colours tear. For a beat or a scene change, so give it a short length.

Parameter	Type	What it does
`amount`	number	0 to 1, how often the picture breaks. default `0.55`, min 0, max 1, animatable.

`pixelate`

Large square pixels over the whole picture.

Parameter	Type	What it does
`size`	number	The side of one block, in pixels. default `24`, min 1, in px, animatable.

`posterize`

Flatten the picture into a few steps of each colour, like a screen print.

Parameter	Type	What it does
`levels`	number	How many steps each colour channel keeps. 2 to 6 is a poster, above 16 is barely visible. default `4`, min 2, max 48, animatable.

`rgbShift`

Pull the red and blue channels apart sideways, for a chromatic, analogue-video edge.

Parameter	Type	What it does
`distance`	number	How far each channel moves, in pixels. The engine stops at a sixteenth of the frame’s width. default `10`, min 0, in px, animatable.

`scanLines`

The dark horizontal lines of a CRT monitor. No parameters.

`sketch`

Turn the picture into a pencil drawing.

Parameter	Type	What it does
`amount`	number	0 to 1. 1 is a pure pencil drawing on white, lower lets the original colours wash back in behind the lines. default `1`, min 0, max 1, animatable.

`trails`

Blend the last moments of the clip together, so moving lights and people leave streaks.

Parameter	Type	What it does
`duration`	number	How long a streak lasts, in seconds. default `0.9`, min 0, in s.

Easings

Any keyframe takes one of 33: step, linear, smooth, easeInSine, easeOutSine, easeInOutSine, easeInQuad, easeOutQuad, easeInOutQuad, easeInCubic, easeOutCubic, easeInOutCubic, easeInQuart, easeOutQuart, easeInOutQuart, easeInQuint, easeOutQuint, easeInOutQuint, easeInExpo, easeOutExpo, easeInOutExpo, easeInCirc, easeOutCirc, easeInOutCirc, easeInBack, easeOutBack, easeInOutBack, easeInElastic, easeOutElastic, easeInOutElastic, easeInBounce, easeOutBounce, easeInOutBounce. Fields marked * are required. Every table on this page is generated from the schema the API validates with, so it cannot drift from what a render accepts.

​Color

​color

​look

​blur

​sharpen

​denoise

​glow

​grain

​lut

​vignette

​Layers

​chromaKey

​blurRegion

​mask

​outline

​dropShadow

​Sound

​visualizer

​eq

​compressor

​limiter

​gate

​highPass

​lowPass

​loudness

​pitch

​echo

​reverb

​voiceDenoise

​Stylize

​shake

​glitch

​pixelate

​posterize

​rgbShift

​scanLines

​sketch

​trails

​Easings