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=Goal of the working group=
=Goal of the working group=


There is currently a great deal of effects, of different quality and relevance. The goal is to clean up the effect list, to get better visibility and usability, and also to evolve the effect management.
The list of [https://invent.kde.org/kde/kdenlive/issues?label_name%5B%5D=Effects Effect related issues] on Gitlab
A lot of the discussion is currently happening on [https://invent.kde.org/kde/kdenlive/issues/350 Issue #350].
JBM wrote a document for the effects mini sprint of the 2019/11/1 : https://share.kde.org/s/5GMats9HNgeoL3e
=Effect management=
== Effect categories ==
=== Current paradigm ===
There is currently 5 top categories for effects :
* Main effects
* Video effects
* Audio effects
* Custom effects
* Favorite effects
These categories don't share the same status, though.
* The first three are functional categories, divided into subcategories :
* Custom effects are existing effects with a custom preset
=== New paradigm ===
==== How favorites work ====
==== Reducing the number of effects ====
One main idea would be to create  a "Legacy" category and place in it non-working, or redundant effects
=== Current implementation ===
The effects are categorized in [https://invent.kde.org/kde/kdenlive/blob/master/data/kdenliveeffectscategory.rc <code>./data/kdenliveeffectscategory.rc</code>]
The structure of XML files for effect description is detailed in [https://invent.kde.org/kde/kdenlive/blob/master/data/effects/README <code>./data/effects/README</code>]
=== Suggested implementation ===
== Searching the effects ==
Currently the search feature is accessible in the same visual way as the different categories.
The idea would be to have it accross the whole box, as described [https://invent.kde.org/kde/kdenlive/issues/350#note_13660 in this comment].
[[File:SearchEffects.png|center]]
This has been implemented.
== Custom effects versus Presets ==


= Table  of effects =
= Table  of effects =


Generated from ./data/kdenliveeffectscategory.rc (is that the proper strating point ?)
The full list of effects available from your mlt installation can be retrieved by:
 
<pre>melt -query filters</pre>
 
Kdenlive will blacklist some of these effects, as listed in [https://invent.kde.org/kde/kdenlive/blob/master/data/blacklisted_effects.txt <code>./data/blacklisted_effects.txt</code>]
 
 
The review of [https://lite.framacalc.org/kdenlive-effects the different effects in a share spreadsheet].
 
 
 
 
== Alpha/Transform ==
{| class="wikitable"
{| class="wikitable"
!Category
!Effect name
!Effect name
!Description
!18.12.1d
!Notes
!19.04 refactoring (046d5002)
!Action decided
!19.12 status
!Comments
|-
|-
|Alpha gradient
|OK
|OK
|
|
|-
|Alpha operations
|OK
|OK
|Fixed in 19.08
|Controls are missing the radio buttons that were in 18.12, but I don’t know if it affects in a negative way
|-
|Alpha Shapes
|OK
|OK
|Cannot see problem
|Min misbehaving
|-
|Chroma Key
|OK
|OK
|Fixed in 19.12
|weird standard configuration
|-
|-
|Chroma-key
|OK
|OK
|OK?
|I guess
|-
|-
|Colour correction
|Key Spill Mop Up
|Lift/gamma/gain
|OK
|OK
|
|
|
|
|-
|Rectangular Alpha mask
|OK
|OK
|OK
|
|
|-
|-
|Colour correction
|Rotoscoping
|Brightness (keyframable)
|OK
|Change image brightness with keyframes
|OK
|OK
|
|
|-
|}
== Analysis and data ==
{| class="wikitable"
!Effect name
!18.12.1d
!19.04 refactoring (046d5002)
!Comments
|-
|-
|Audio Spectrum filter
|?
|?
|I see no effect or I don’t know how to use it
|-
|Audio Wave
|?
|?
|I see no effect or I don’t know how to use it
|-
|Oscilloscope
|OK
|OK
|
|
|-
|-
|Colour correction
|RGB Parade
|Gamma
|OK
|Change gamma color value
|OK
|
|
|-
|Timeout indicator
|OK
|OK
|Could be enhanced by adding the ability to use sprites or numbers
|-
|Vectorscope
|OK
|OK
|
|
|-
|-
|Colour correction
|Video values
|White Balance (LMS space)
|OK
|Do simple color correction, in a physically meaningful
|OK
way
|Really useful effect but could be enhanced by adding the ability to interact with it in the monitor
|-
|}
== Artistic ==
{| class="wikitable"
!Effect name
!18.12.1d
!19.04 refactoring (046d5002)
!Comments
|-
|-
|3-level Threshold
|OK
|OK
|
|
|-
|Binarize
|OK
|OK
|
|
|-
|-
|Colour correction
|Binarize dynamically
|White Balance
|OK
|Adjust the white balance / color temperature
|OK
|
|
|-
|BurningTV
|MISSING
|OK
|Is this new?
|-
|Cartoon
|SEMI-BROKEN
|BROKEN
|Changing difference space breaks it in 18.12
|-
|Charcoal
|OK
|OK
|
|
|-
|-
|Colour correction
|Dither
|Brightness
|OK
|Adjusts the brightness of a source image
|OK
|
|
|-
|Dust
|OK
|OK
|
|
|-
|-
|Colour correction
|Emboss
|Levels
|OK
|Adjust levels
|OK
|I can see very small differences on refactoring but that could be me using proxy clips>'''Defaults fixed in 19.12'''.
|-
|Grain
|OK
|OK
|
|
|-
|Oldfilm
|OK
|OK
|
|
|-
|-
|Colour correction
|Posterize
|3 point balance
|OK
|Balances colors along with 3 points
|OK
|
|
|-
|Rgbnoise
|OK
|OK
|
|
|-
|-
|Colour correction
|Scratchlines
|Curves
|OK
|Color curves adjustment
|OK
|
|
|-
|Sigmoidaltransfer
|OK
|OK
|
|
|-
|-
|Colour correction
|Sobel
|RGB adjustment
|OK
|Simple color adjustment
|OK
|
|
|-
|Thresold
|OK
|OK
|
|
|-
|-
|Colour correction
|Vignette
|SOP/Sat
|OK
|Changes Slope, Offset, and Power of the color components, and the overall Saturation, according to the ASC CDL (Color Decision List).
|OK
|
|
|-
|Vignette Effect
|OK
|OK
|
|
|-
|-
|Colour correction
|}
|Bézier Curves
 
|Color curves adjustment
== Blur and hide ==
{| class="wikitable"
!Effect name
!18.12.1d
!19.04 refactoring (046d5002)
!Comments
|-
|-
|Auto Mask
|OK
|SEMI-BROKEN
|This effect needs some improvement. Seems to misbehave on refactoring (selects the incorrect region)
|-
|Blur
|OK
|SEMI-BROKEN
|Works in refactoring but it’s missing the blur types > '''Fixed in 19.08'''
|-
|Box Blur
|OK
|OK
|
|
|-
|Edge glow
|OK
|OK
|Keyframes are a very good addition
|-
|Glow
|OK
|OK
|
|
|-
|-
|Colour correction
|Medians
|CMYK adjust (avfilter)
|OK (?)
|Apply CMYK correction to specific color ranges
|OK (?)
|Guess it works. I really don’t know how to use it and have no use for it now
|-
|Obscure
|OK
|SEMI-BROKEN
|The pixels on refactoring are too wide > '''Fixed in 19.12'''
|-
|Softglow
|OK
|OK
|
|
|-
|Square Blur
|OK
|OK
|
|
|-
|-
|Colour correction
|}
|Apply LUT
 
|Apply a Look Up Table (LUT) to the video.
== Colour ==
 
{| class="wikitable"
!Effect name
!18.12.1d
!19.04 refactoring (046d5002)
!Comments
|-
|-
|B
|MISSING
|OK
|
|
|-
|Chroma Hold
|OK
|OK
|
|
|-
|-
|Colour
|Colorize
|Invert
|OK
|Invert colors
|OK
|
|
|-
|Contrast
|OK
|OK
|
|
|-
|-
|Colour
|Equaliz0r
|Sepia
|OK
|Turn clip colors to sepia
|OK
|
|
|
|-
|-
|Colour
|G
|Technicolor
|MISSING
|Oversaturate the color in video, like in old Technicolor movies
|OK
|
|
|
|-
|-
|Colour
|Greyscale
|Greyscale
|Discard color information
|OK
|OK
|
|
|-
|Hue shift
|OK
|OK
|
|
|-
|-
|Colour
|Invert
|frei0r.B
|OK
|No file effect found
|OK
|
|
|-
|LumaLiftGainGamma
|BROKEN
|BROKEN
|Can’t interact with the sliders. Don’t see the use of it with the rest of the colour correction effects > '''Fixed in 19.08'''
|-
|Luminance
|OK
|OK
|
|
|-
|-
|Colour
|Primaries
|frei0r.G
|OK
|No file effect found
|OK
|
|
|-
|R
|MISSING
|OK
|
|
|-
|-
|Colour
|Saturation
|frei0r.R
|OK
|No file effect found
|OK
|
|
|
|-
|-
|Colour
|Sepia
|Contrast
|OK
|Adjusts the contrast of a source image
|OK
|
|
|
|-
|-
|Colour
|Technicolor
|Saturation
|OK
|Adjusts the saturation of a source image
|OK
|
|
|
|-
|-
|Colour
|Tint
|Tint
|Maps source image luminance between two colors specified
|OK
|OK
|
|
|-
|}
== Colour correction ==
{| class="wikitable"
!Effect name
!18.12.1d
!19.04 refactoring (046d5002)
!Comments
|-
|-
|3 point balance
|OK
|OK
|
|
|-
|-
|Colour
|Apply LUT
|Primaries
|OK
|Reduce image to primary colors
|SEMI-BROKEN
|Drag and drop not working in refactoring > '''Fixed in 19.12'''
|-
|Bézier Curves
|OK
|BROKEN
|Does not show the correct overlay for each colour in refactoring > '''Cannot reproduce in 19.12'''
|-
|Brightness
|OK
|OK
|
|
|-
|Brightness (keyframable)
|OK
|OK
|
|
|-
|-
|Colour
|CMYK adjust (avfilter)
|Chroma Hold
|OK
|Make image greyscale except for chosen color
|BROKEN
|
|Not implemented in refactoring
|-
|Curves
|OK
|OK
|Does not show the correct overlay for each colour in refactoring> '''Cannot reproduce in 19.12'''
|-
|Gamma
|OK
|OK
|
|
|-
|-
|Colour
|Levels
|frei0r.colorize
|OK
|No file effect found
|OK
|
|
|
|-
|-
|Colour
|Lift/gamma/gain
|Equaliz0r
|OK
|Equalizes the intensity histograms
|OK
|
|A way to interact directly with the numbers under the wheels would be nice
|
|-
|-
|Colour
|RGB adjustment
|Hue shift
|OK
|Shifts the hue of a source image
|OK
|
|
|
|-
|-
|Colour
|SOP/Sat
|Luminance
|OK
|Creates a luminance map of the image
|OK
|
|Sometimes gives a black screen in refactoring > '''Fixed in 19.12'''
|
|-
|-
|Colour
|White Balance
|lumaliftgaingamma
|OK
|No file effect found
|OK
|
|
|
|-
|-
|Crop and transform
|White Balance (LMS space)
|LetterB0xed
|OK
|Adds black borders at top and bottom for cinema look
|OK
|
|
|
|-
|-
|Crop and transform
|}
|Position and Zoom
 
|Adjust size and position of clip
== Crop and transform ==
|
|
{| class="wikitable"
!Effect name
!18.12.1d
!19.04 refactoring (046d5002)
!Comments
|-
|-
|Crop and transform
|-
|Crop, Scale and Tilt
|Crop, Scale and Tilt
|Scales, Tilts and Crops an Image
|OK
|
|OK
|
|
|-
|-
|Crop and transform
|Edge Crop
|Edge Crop
|Trim the edges of a clip
|OK
|OK
|
|
|-
|LetterB0xed
|OK
|OK
|
|
|-
|-
|Crop and transform
|nosync0r
|affine
|OK
|No file effect found
|OK
|
|
|-
|Position and Zoom
|OK
|OK
|
|
|-
|-
|Crop and transform
|Rotate (keyframable)
|affinerotate
|OK
|No file effect found
|OK
|
|
|
|-
|-
|Crop and transform
|Rotate and Shear
|nosync0r
|OK
|Broken TV
|OK
|
|
|
|-
|-
|Crop and transform
|Transform
|Transform
|Position, scale and opacity.
|OK
|OK
|
|
|-
|}
== Distort ==
{| class="wikitable"
!Effect name
!18.12.1d
!19.04 refactoring (046d5002)
!Comments
|-
|-
|Corners
|OK
|SEMI-BROKEN
|Does not seem to let the user change the points in the monitor in refactoring >> '''Seems fixed in 19.08'''
|-
|Defish
|OK
|OK
|
|
|-
|-
|Audio correction
|Distort
|Volume (keyframable)
|OK
|Adjust audio volume with keyframes
|OK
|
|
|-
|Lens Correction
|OK
|OK
|
|
|-
|-
|Audio correction
|Mirror
|Normalise
|OK
|Dynamically normalise the audio volume
|OK
|
|
|-
|Pixelize
|OK
|BROKEN
|
|
|-
|-
|Audio correction
|Wave
|Gain
|OK
|Adjust the audio volume without keyframes
|BROKEN
|
|
|-
|}
== Enhancement ==
{| class="wikitable"
!Effect name
!18.12.1d
!19.04 refactoring (046d5002)
!Comments
|-
|-
|Denoiser
|OK
|OK
|
|
|-
|-
|Audio correction
|Nikon D90 Stairstepping fix
|ladspa.1049
|OK (?)
|No file effect found
|OK (?)
|Guess it works, I don’t have Nikon D90 footage to test
|-
|Sharpen
|BROKEN
|OK
|Fixed in refactoring (Thanks!)
|-
|Spillsupress
|OK
|OK
|
|
|-
|}
== Motion ==
{| class="wikitable"
!Effect name
!18.12.1d
!19.04 refactoring (046d5002)
!Comments
|-
|-
|Freeze
|OK
|OK
|
|
|-
|-
|Audio correction
|}
|ladspa.1048
== Misc ==
|No file effect found
{| class="wikitable"
!Effect name
!18.12.1d
!19.04 refactoring (046d5002)
!Comments
|-
|-
|Apply a filter mask
|?
|?
|Don’t know how to use
|-
|Atadenoise
|BROKEN
|MISSING
|
|
|-
|Avgblur
|BROKEN (?)
|MISSING
|Doesn’t look right to me
|-
|Baltan
|OK
|OK
|
|
|-
|-
|Audio correction
|BgSubtract0r
|ladspa.1413
|BROKEN (?)
|No file effect found
|BROKEN (?)
|Black screen
|-
|Bitplanedenoise
|BROKEN (?)
|BROKEN (?)
|Either broken or don’t know it’s use
|-
|Boxblur
|OK
|OK
|Deduplicated in refactoring
|-
|BurningTV
|MISSING
|OK
|Duplicated in Artistic (Artistcic is it’s place)
|-
|Bwdif
|BROKEN
|MISSING
|
|
|-
|Cairogradient
|OK
|OK
|“Start color” and “End color” strings missing in refactoring
|-
|Cairoimagegrid
|OK
|OK
|
|
|-
|-
|Audio correction
|Chromakey
|Mute
|BROKEN
|Mute clip
|MISSING
|Not needed
|-
|Ciescope
|BROKEN (?)
|OK
|Implemented in refactoring (?)
|-
|Color Distance
|OK
|OK
|
|
|-
|Color Effect
|OK
|OK
|Should be in “Colour”
|-
|Colorbalance
|MISSING
|OK
|Should be in “Colour”
|-
|Colorchannelmixer
|OK
|OK
|Should be in “Colour”
|-
|Colorhalftone
|OK
|OK
|Should be in “Colour”. More stable in refactoring
|-
|Colorkey
|BROKEN
|MISSING
|Not needed
|-
|Colorlevels
|OK
|OK
|Should be in “Colour”
|-
|Colormatrix
|BROKEN
|MISSING
|
|
|-
|-
|Audio channels
|Colorspace
|Balance
|BROKEN
|Adjust the left/right balance
|MISSING
|
|
|-
|Convolution
|BROKEN
|MISSING
|
|
|-
|-
|Audio channels
|Cropdetect
|Pan
|BROKEN
|Adjust the left/right spread of a channel
|MISSING
|
|
|-
|Dance
|OK (?)
|OK (?)
|Guess it works, did not test with compositing to make it work
|-
|Datascope
|BROKEN
|MISSING
|
|
|-
|-
|Audio channels
|Dctdnoiz
|Swap channels
|BROKEN (?)
|Move the left channel to the right and right-to-left
|MISSING
|I don’t know if it’s broken or if it is a weird effect
|-
|Deband
|BROKEN
|MISSING
|
|
|-
|Deflate
|BROKEN
|MISSING
|
|
|-
|-
|Audio channels
|Deflicker
|ladspa.1406
|MISSING
|No file effect found
|?
|Don’t know what’s supposed to do
|-
|Delay grab
|OK
|OK
|Yeah cool, but what use does it have in a video editor?
|-
|delay0r
|OK (?)
|OK (?)
|I think it has an effect but I don’t know how to use it
|-
|Delogo
|?
|?
|Don’t know anything at all about this effect
|-
|Deshake
|?
|MISSING
|Don’t know anything at all about this effect
|-
|Denoise_vaapi
|MISSING
|?
|Don’t know if it has an effect
|-
|Dilation
|?
|?
|No idea
|-
|Drawbox
|OK (?)
|MISSING
|Draws a box around the video, simple enough. Why has it been removed?
|-
|Drawgraph
|?
|?
|
|
|-
|Drawgrid
|BROKEN
|MISSING
|
|
|-
|-
|Audio channels
|Dynamic Text
|Mono to stereo
|OK
|Copy one channel to another
|OK
|
|
|-
|Edgedetect
|OK
|OK
|Artistic?
|-
|Elbg
|BROKEN
|MISSING
|
|
|-
|-
|Analysis and data
|Entropy
|Audio Wave
|MISSING
|Display the audio waveform instead of the video
|?
|What it is supposed to do?
|-
|Eq
|?
|MISSING
|
|
|-
|Erosion
|?
|?
|
|
|-
|-
|Analysis and data
|Face blur
|audiospectrum
|MISSING
|No file effect found
|CRASH
|
|
|-
|Face detect
|MISSING
|?
|Don’t know what is supposed to do
|-
|Fftfilt
|?
|?
|Makes colours
|-
|Field order
|MISSING
|?
|
|
|-
|-
|Analysis and data
|Fillborders
|Video values
|MISSING
|Measure video values
|?
|
|
|-
|Flippo
|OK
|OK
|Should be in “Crop and transform”
|-
|Fspp
|OK (?)
|MISSING
|Why has it been removed?
|-
|Gblur
|OK (?)
|MISSING
|Seems to work, but I’m not sure
|-
|Glitch0r
|OK
|OK
|Should be in “Artistic” or “Distort”
|-
|Gradfun
|OK
|BROKEN
|Should be fixed
|-
|Greyscale
|MISSING
|OK
|Duplicated?
|-
|Histeq
|OK
|OK
|Interesting effect. Could fit in “Artistic”
|-
|Histogram
|BROKEN
|OK
|Should be in “Analysis and data”
|-
|Hqdn3d
|BROKEN
|MISSING
|
|
|-
|-
|Analysis and data
|Hqx
|Oscilloscope
|?
|2D video oscilloscope
|MISSING
|
|
|-
|Hue
|?
|MISSING
|
|
|-
|-
|Analysis and data
|Hwmap
|RGB Parade
|MISSING
|Display a histogram of R, G and B components of the video data
|?
|
|
|-
|Hwupload
|MISSING
|?
|
|
|-
|-
|Analysis and data
|Hwupload_cuda
|Timeout indicator
|?
|
|MISSING
|
|
|-
|Idet
|?
|MISSING
|
|
|-
|-
|Analysis and data
|Inflate
|Vectorscope
|?
|Display a vectorscope of the video data
|?
|
|
|
|-
|-
|Fade
|K-Means Clustering
|Fade from Black
|OK
|Fade video from black
|OK
|
|Should be in “Artistic”
|
|-
|-
|Fade
|Kerndeint
|Fade to Black
|MISSING
|Fade video to black
|?
|
|
|
|-
|-
|Fade
|Lenscorrection
|Fade in
|BROKEN
|Fade in audio track
|MISSING
|
|Not neede and seems glitched
|
|-
|-
|Fade
|Light Graffiti
|Fade out
|?
|Fade out audio track
|?
|
|Don’t know how to use
|
|-
|-
|Artistic
|Light Show
|burningtv
|?
|No file effect found
|?
|
|
|
|-
|-
|Artistic
|Limiter
|Charcoal
|MISSING
|Charcoal drawing effect
|?
|
|
|
|-
|-
|Artistic
|Loop
|Dust
|?
|Add dust and specks to the video, as in old movies
|MISSING
|
|
|
|-
|-
|Artistic
|Lumakey
|Cartoon
|OK
|Cartoonify video, do a form of edge detect
|OK
|
|
|
|-
|-
|Artistic
|Lut
|frei0r.dither
|?
|No file effect found
|MISSING
|
|
|
|-
|-
|Artistic
|Lutrgb
|frei0r.emboss
|?
|No file effect found
|MISSING
|
|
|
|-
|-
|Artistic
|Lutyuv
|frei0r.posterize
|?
|No file effect found
|MISSING
|
|
|
|-
|-
|Artistic
|Mestimate
|frei0r.rgbnoise
|?
|No file effect found
|MISSING
|
|
|
|-
|-
|Artistic
|Motion tracker
|frei0r.sigmoidaltransfer
|OK (?)
|No file effect found
|MISSING
|
|Could be useful
|
|-
|-
|Artistic
|NDVI filter
|Sobel
|OK
|Sobel filter
|OK
|
|
|
|-
|-
|Artistic
|Nervous
|3-level Threshold
|OK
|Dynamic 3-level thresholding
|OK
|
|
|
|-
|-
|Artistic
|Nlmeans
|Threshold
|BROKEN
|Thresholds a source image
|MISSING
|
|
|
|-
|-
|Artistic
|Noise
|Binarize dynamically
|BROKEN
|Dynamic thresholding
|OK
|
|
|
|-
|-
|Artistic
|Normaliz0r
|Vignette
|OK
|Natural lens vignetting effect
|OK
|
|Missing strings “BlackPt” and “WhitePt”
|
|-
|-
|Artistic
|Normalize
|Grain
|MISSING
|Grain over the image
|?
|
|
|
|-
|-
|Artistic
|Ocv
|lines
|MISSING
|No file effect found
|?
|
|
|
|-
|-
|Artistic
|Oscilloscope
|lightgraffiti
|MISSING
|No file effect found
|BROKEN (?)
|
|Duplicated
|
|-
|-
|Artistic
|Owdenoise
|Oldfilm
|?
|Moves the Picture up and down and random brightness change
|MISSING
|
|
|
|-
|-
|Artistic
|Pad
|Binarize
|?
|Make monochrome clip
|MISSING
|
|
|
|-
|-
|Artistic
|Perspective
|Vignette Effect
|BROKEN
|Adjustable Vignette
|MISSING
|
|
|
|-
|-
|Blur and hide
|Pp
|Box Blur
|?
|Box blur (separate horizontal and vertical blur)
|MISSING
|
|
|
|-
|-
|Blur and hide
|Pp7
|Obscure
|?
|Hide a region of the clip
|MISSING
|
|
|
|-
|-
|Blur and hide
|Premultiply or Unpremultiply
|autotrack_rectangle
|?
|No file effect found
|?
|
|
|
|-
|-
|Blur and hide
|Prewitt
|Square Blur
|OK (?)
|Square blur
|MISSING
|
|Could fit in “Artistic”
|
|-
|-
|Blur and hide
|Precamp_vaapi
|Glow
|MISSING
|Creates a Glamorous Glow
|?
|
|
|
|-
|-
|Blur and hide
|Pseudocolor
|Blur
|MISSING
|Blur using 2D IIR filters (Exponential, Lowpass, Gaussian)
|OK
|
|
|
|-
|-
|Blur and hide
|Qtext
|Edge glow
|OK
|Edge glow filter
|MISSING
|
|Don’t know which use does it have with Title Clips but wouldn’t remove it either
|
|-
|-
|Blur and hide
|Random
|Medians
|?
|Implements several median-type filters
|?
|
|
|
|-
|-
|Blur and hide
|Removegrain
|frei0r.softglow
|?
|No file effect found
|MISSING
|
|Maybe it works, don’t have appropiate footage to test
|
|-
|-
|Motion
|Rescale
|Speed
|MISSING
|Make clip play faster or slower
|OK
|
|
|
|-
|-
|Motion
|Rgbsplit0r
|Freeze
|BROKEN (?)
|Freeze video on a chosen frame
|MISSING
|
|Black screen
|
|-
|-
|Distort
|Rotate
|Wave
|BROKEN
|Make waves on your clip with keyframes
|MISSING
|
|
|
|-
|-
|Distort
|Sab
|Mirror
|?
|Flip your image in any direction
|?
|
|Don’t know what’s supposed to do
|
|-
|-
|Distort
|scanline0r
|Distort
|OK
|Plasma
|OK
|
|I wonder if it could use some parameters
|
|-
|-
|Distort
|Setrange
|Lens Correction
|MISSING
|Allows compensation of lens distortion
|?
|
|I see no effect, don’t know if it works
|
|-
|-
|Distort
|Setup a filter mask
|Corners
|OK (?)
|Four corners geometry engine
|MISSING
|
|Just leaves a square similar to shape alpha
|
|-
|-
|Distort
|Shape Alpha
|Defish
|BROKEN
|Non rectilinear lens mappings
|BROKEN
|
|Non functional and duplicated
|
|-
|-
|Distort
|Sharpness_vaapi
|Pixelize
|MISSING
|Pixelize input image.
|?
|
|Vaapi effects have no effect for me, but could be my setup
|
|-
|-
|Alpha manipulation
|Shuffleframes
|Chroma Key
|?
|Make selected color transparent
|MISSING
|
|No effect/Don’t know what it does
|
|-
|-
|Alpha manipulation
|Shuffleplanes
|Alpha operations
|?
|Display and manipulation of the alpha channel
|?
|
|No effect/Don’t know what it does
|
|-
|-
|Alpha manipulation
|Signalstats
|Alpha gradient
|BROKEN
|Fill the alpha channel with a specified gradient
|MISSING
|
|
|
|-
|-
|Alpha manipulation
|Smartblur
|Alpha shapes
|OK
|Draws simple shapes into the alpha channel
|OK
|
|Should be in “Blur and hide”
|
|-
|-
|Alpha manipulation
|Spot Remover
|frei0r.transparency
|?
|No file effect found
|MISSING
|
|
|
|-
|-
|Alpha manipulation
|Spp
|Color Selection
|?
|Color based alpha selection
|?
|
|
|
|-
|-
|Alpha manipulation
|Swaprect
|Rectangular Alpha mask
|OK (?)
|Creates an square alpha-channel mask
|OK (?)
|Isn't it redundant with Alpha Shapes ?
|Different behaviour in refactoring
|
|-
|-
|Alpha manipulation
|Tblend
|Rotoscoping
|?
|Keyframable vector based rotoscoping
|MISSING
|
|
|
|-
|-
|Alpha manipulation
|TehRoxx0r
|Key Spill Mop Up
|OK (?)
|Reduces the visibility of key color spill in chroma keying
|MISSING
|
|
|
|-
|-
|Enhancement
|Text
|Nikon D90 Stairstepping fix
|OK
|Removes stairstepping artifacts from Nikon D90's 720p videos.
|MISSING
       
|Same case with Qtext, don’t know which use does it have with Title Clips but wouldn’t remove it either
 
|
|
|-
|-
|Enhancement
|Timer
|Denoiser
|OK
|High quality 3D denoiser
|MISSING
|
|Could be useful in some situations, wouldn’t remove it
|
|-
|-
|Enhancement
|Transpose
|Sharpen
|BROKEN
|Unsharp masking (port from Mplayer)
|MISSING
|
|
|
|-
|-
|Enhancement
|Unsharp
|frei0r.spillsupress
|BROKEN (?)
|No file effect found
|BROKEN (?)
|
|I see no effect
|
|-
|-
|GPU effects
|Uspp
|Blur (GPU)
|?
|
|?
|
|I see no effect or I don’t know how to use it
|
|-
|-
|GPU effects
|Vaguedenoiser
|movit.sharpen
|BROKEN (?)
|No file effect found
|BROKEN (?)
|
|Don’t really know if it’s broken or not
|
|-
|-
|GPU effects
|Vertigo
|Diffusion (GPU)
|BROKEN
|
|MISSING
|
|Black screen
|
|-
|-
|GPU effects
|Vid.Stab Deshake
|Glow (GPU)
|BROKEN
|
|MISSING
|
|Problem adding effect to clip
|
|-
|-
|GPU effects
|Vid.Stab Detect and Transform
|Lift/gamma/gain (GPU)
|OK (?)
|
|MISSING
|
|It could work but did not test extensively, and there are other ways to use stabilization in kdenlive
|
|-
|-
|GPU effects
|Visualize Motion Vectors
|Mirror (GPU)
|MISSING
|
|?
|
|
|
|-
|-
|GPU effects
|W3fdif
|Opacity (GPU)
|BROKEN
|
|MISSING
|
|
|
|-
|-
|GPU effects
|Waveform
|Pan and Zoom (GPU)
|BROKEN
|
|OK
|
|Should be in “Analysis and data”
|
|-
|-
|GPU effects
|Weave
|Saturation (GPU)
|MISSING
|
|OK
|
|Could use some parameters
|
|-
|-
|GPU effects
|Xbr
|Unsharp mask (GPU)
|?
|
|MISSING
|
|
|
|-
|-
|GPU effects
|Zoompan
|Vignette (GPU)
|BROKEN (?)
|
|MISSING
|
|No effect/Don’t know what it does
|
|-
|-
|GPU effects
|White Balance (GPU)
|
|
|
|}
|}

Latest revision as of 22:09, 3 November 2019

Goal of the working group

There is currently a great deal of effects, of different quality and relevance. The goal is to clean up the effect list, to get better visibility and usability, and also to evolve the effect management.

The list of Effect related issues on Gitlab

A lot of the discussion is currently happening on Issue #350.

JBM wrote a document for the effects mini sprint of the 2019/11/1 : https://share.kde.org/s/5GMats9HNgeoL3e

Effect management

Effect categories

Current paradigm

There is currently 5 top categories for effects :

  • Main effects
  • Video effects
  • Audio effects
  • Custom effects
  • Favorite effects

These categories don't share the same status, though.

  • The first three are functional categories, divided into subcategories :
  • Custom effects are existing effects with a custom preset



New paradigm

How favorites work

Reducing the number of effects

One main idea would be to create a "Legacy" category and place in it non-working, or redundant effects


Current implementation

The effects are categorized in ./data/kdenliveeffectscategory.rc

The structure of XML files for effect description is detailed in ./data/effects/README


Suggested implementation

Searching the effects

Currently the search feature is accessible in the same visual way as the different categories.

The idea would be to have it accross the whole box, as described in this comment.

This has been implemented.


Custom effects versus Presets

Table of effects

The full list of effects available from your mlt installation can be retrieved by: 

melt -query filters

Kdenlive will blacklist some of these effects, as listed in ./data/blacklisted_effects.txt


The review of the different effects in a share spreadsheet.



Alpha/Transform

Effect name 18.12.1d 19.04 refactoring (046d5002) 19.12 status Comments
Alpha gradient OK OK
Alpha operations OK OK Fixed in 19.08 Controls are missing the radio buttons that were in 18.12, but I don’t know if it affects in a negative way
Alpha Shapes OK OK Cannot see problem Min misbehaving
Chroma Key OK OK Fixed in 19.12 weird standard configuration
Chroma-key OK OK OK? I guess
Key Spill Mop Up OK OK
Rectangular Alpha mask OK OK OK
Rotoscoping OK OK OK

Analysis and data

Effect name 18.12.1d 19.04 refactoring (046d5002) Comments
Audio Spectrum filter ? ? I see no effect or I don’t know how to use it
Audio Wave ? ? I see no effect or I don’t know how to use it
Oscilloscope OK OK
RGB Parade OK OK
Timeout indicator OK OK Could be enhanced by adding the ability to use sprites or numbers
Vectorscope OK OK
Video values OK OK Really useful effect but could be enhanced by adding the ability to interact with it in the monitor

Artistic

Effect name 18.12.1d 19.04 refactoring (046d5002) Comments
3-level Threshold OK OK
Binarize OK OK
Binarize dynamically OK OK
BurningTV MISSING OK Is this new?
Cartoon SEMI-BROKEN BROKEN Changing difference space breaks it in 18.12
Charcoal OK OK
Dither OK OK
Dust OK OK
Emboss OK OK I can see very small differences on refactoring but that could be me using proxy clips>Defaults fixed in 19.12.
Grain OK OK
Oldfilm OK OK
Posterize OK OK
Rgbnoise OK OK
Scratchlines OK OK
Sigmoidaltransfer OK OK
Sobel OK OK
Thresold OK OK
Vignette OK OK
Vignette Effect OK OK

Blur and hide

Effect name 18.12.1d 19.04 refactoring (046d5002) Comments
Auto Mask OK SEMI-BROKEN This effect needs some improvement. Seems to misbehave on refactoring (selects the incorrect region)
Blur OK SEMI-BROKEN Works in refactoring but it’s missing the blur types > Fixed in 19.08
Box Blur OK OK
Edge glow OK OK Keyframes are a very good addition
Glow OK OK
Medians OK (?) OK (?) Guess it works. I really don’t know how to use it and have no use for it now
Obscure OK SEMI-BROKEN The pixels on refactoring are too wide > Fixed in 19.12
Softglow OK OK
Square Blur OK OK

Colour

Effect name 18.12.1d 19.04 refactoring (046d5002) Comments
B MISSING OK
Chroma Hold OK OK
Colorize OK OK
Contrast OK OK
Equaliz0r OK OK
G MISSING OK
Greyscale OK OK
Hue shift OK OK
Invert OK OK
LumaLiftGainGamma BROKEN BROKEN Can’t interact with the sliders. Don’t see the use of it with the rest of the colour correction effects > Fixed in 19.08
Luminance OK OK
Primaries OK OK
R MISSING OK
Saturation OK OK
Sepia OK OK
Technicolor OK OK
Tint OK OK

Colour correction

Effect name 18.12.1d 19.04 refactoring (046d5002) Comments
3 point balance OK OK
Apply LUT OK SEMI-BROKEN Drag and drop not working in refactoring > Fixed in 19.12
Bézier Curves OK BROKEN Does not show the correct overlay for each colour in refactoring > Cannot reproduce in 19.12
Brightness OK OK
Brightness (keyframable) OK OK
CMYK adjust (avfilter) OK BROKEN Not implemented in refactoring
Curves OK OK Does not show the correct overlay for each colour in refactoring> Cannot reproduce in 19.12
Gamma OK OK
Levels OK OK
Lift/gamma/gain OK OK A way to interact directly with the numbers under the wheels would be nice
RGB adjustment OK OK
SOP/Sat OK OK Sometimes gives a black screen in refactoring > Fixed in 19.12
White Balance OK OK
White Balance (LMS space) OK OK

Crop and transform

Effect name 18.12.1d 19.04 refactoring (046d5002) Comments
Crop, Scale and Tilt OK OK
Edge Crop OK OK
LetterB0xed OK OK
nosync0r OK OK
Position and Zoom OK OK
Rotate (keyframable) OK OK
Rotate and Shear OK OK
Transform OK OK

Distort

Effect name 18.12.1d 19.04 refactoring (046d5002) Comments
Corners OK SEMI-BROKEN Does not seem to let the user change the points in the monitor in refactoring >> Seems fixed in 19.08
Defish OK OK
Distort OK OK
Lens Correction OK OK
Mirror OK OK
Pixelize OK BROKEN
Wave OK BROKEN

Enhancement

Effect name 18.12.1d 19.04 refactoring (046d5002) Comments
Denoiser OK OK
Nikon D90 Stairstepping fix OK (?) OK (?) Guess it works, I don’t have Nikon D90 footage to test
Sharpen BROKEN OK Fixed in refactoring (Thanks!)
Spillsupress OK OK

Motion

Effect name 18.12.1d 19.04 refactoring (046d5002) Comments
Freeze OK OK

Misc

Effect name 18.12.1d 19.04 refactoring (046d5002) Comments
Apply a filter mask ? ? Don’t know how to use
Atadenoise BROKEN MISSING
Avgblur BROKEN (?) MISSING Doesn’t look right to me
Baltan OK OK
BgSubtract0r BROKEN (?) BROKEN (?) Black screen
Bitplanedenoise BROKEN (?) BROKEN (?) Either broken or don’t know it’s use
Boxblur OK OK Deduplicated in refactoring
BurningTV MISSING OK Duplicated in Artistic (Artistcic is it’s place)
Bwdif BROKEN MISSING
Cairogradient OK OK “Start color” and “End color” strings missing in refactoring
Cairoimagegrid OK OK
Chromakey BROKEN MISSING Not needed
Ciescope BROKEN (?) OK Implemented in refactoring (?)
Color Distance OK OK
Color Effect OK OK Should be in “Colour”
Colorbalance MISSING OK Should be in “Colour”
Colorchannelmixer OK OK Should be in “Colour”
Colorhalftone OK OK Should be in “Colour”. More stable in refactoring
Colorkey BROKEN MISSING Not needed
Colorlevels OK OK Should be in “Colour”
Colormatrix BROKEN MISSING
Colorspace BROKEN MISSING
Convolution BROKEN MISSING
Cropdetect BROKEN MISSING
Dance OK (?) OK (?) Guess it works, did not test with compositing to make it work
Datascope BROKEN MISSING
Dctdnoiz BROKEN (?) MISSING I don’t know if it’s broken or if it is a weird effect
Deband BROKEN MISSING
Deflate BROKEN MISSING
Deflicker MISSING ? Don’t know what’s supposed to do
Delay grab OK OK Yeah cool, but what use does it have in a video editor?
delay0r OK (?) OK (?) I think it has an effect but I don’t know how to use it
Delogo ? ? Don’t know anything at all about this effect
Deshake ? MISSING Don’t know anything at all about this effect
Denoise_vaapi MISSING ? Don’t know if it has an effect
Dilation ? ? No idea
Drawbox OK (?) MISSING Draws a box around the video, simple enough. Why has it been removed?
Drawgraph ? ?
Drawgrid BROKEN MISSING
Dynamic Text OK OK
Edgedetect OK OK Artistic?
Elbg BROKEN MISSING
Entropy MISSING ? What it is supposed to do?
Eq ? MISSING
Erosion ? ?
Face blur MISSING CRASH
Face detect MISSING ? Don’t know what is supposed to do
Fftfilt ? ? Makes colours
Field order MISSING ?
Fillborders MISSING ?
Flippo OK OK Should be in “Crop and transform”
Fspp OK (?) MISSING Why has it been removed?
Gblur OK (?) MISSING Seems to work, but I’m not sure
Glitch0r OK OK Should be in “Artistic” or “Distort”
Gradfun OK BROKEN Should be fixed
Greyscale MISSING OK Duplicated?
Histeq OK OK Interesting effect. Could fit in “Artistic”
Histogram BROKEN OK Should be in “Analysis and data”
Hqdn3d BROKEN MISSING
Hqx ? MISSING
Hue ? MISSING
Hwmap MISSING ?
Hwupload MISSING ?
Hwupload_cuda ? MISSING
Idet ? MISSING
Inflate ? ?
K-Means Clustering OK OK Should be in “Artistic”
Kerndeint MISSING ?
Lenscorrection BROKEN MISSING Not neede and seems glitched
Light Graffiti ? ? Don’t know how to use
Light Show ? ?
Limiter MISSING ?
Loop ? MISSING
Lumakey OK OK
Lut ? MISSING
Lutrgb ? MISSING
Lutyuv ? MISSING
Mestimate ? MISSING
Motion tracker OK (?) MISSING Could be useful
NDVI filter OK OK
Nervous OK OK
Nlmeans BROKEN MISSING
Noise BROKEN OK
Normaliz0r OK OK Missing strings “BlackPt” and “WhitePt”
Normalize MISSING ?
Ocv MISSING ?
Oscilloscope MISSING BROKEN (?) Duplicated
Owdenoise ? MISSING
Pad ? MISSING
Perspective BROKEN MISSING
Pp ? MISSING
Pp7 ? MISSING
Premultiply or Unpremultiply ? ?
Prewitt OK (?) MISSING Could fit in “Artistic”
Precamp_vaapi MISSING ?
Pseudocolor MISSING OK
Qtext OK MISSING Don’t know which use does it have with Title Clips but wouldn’t remove it either
Random ? ?
Removegrain ? MISSING Maybe it works, don’t have appropiate footage to test
Rescale MISSING OK
Rgbsplit0r BROKEN (?) MISSING Black screen
Rotate BROKEN MISSING
Sab ? ? Don’t know what’s supposed to do
scanline0r OK OK I wonder if it could use some parameters
Setrange MISSING ? I see no effect, don’t know if it works
Setup a filter mask OK (?) MISSING Just leaves a square similar to shape alpha
Shape Alpha BROKEN BROKEN Non functional and duplicated
Sharpness_vaapi MISSING ? Vaapi effects have no effect for me, but could be my setup
Shuffleframes ? MISSING No effect/Don’t know what it does
Shuffleplanes ? ? No effect/Don’t know what it does
Signalstats BROKEN MISSING
Smartblur OK OK Should be in “Blur and hide”
Spot Remover ? MISSING
Spp ? ?
Swaprect OK (?) OK (?) Different behaviour in refactoring
Tblend ? MISSING
TehRoxx0r OK (?) MISSING
Text OK MISSING Same case with Qtext, don’t know which use does it have with Title Clips but wouldn’t remove it either
Timer OK MISSING Could be useful in some situations, wouldn’t remove it
Transpose BROKEN MISSING
Unsharp BROKEN (?) BROKEN (?) I see no effect
Uspp ? ? I see no effect or I don’t know how to use it
Vaguedenoiser BROKEN (?) BROKEN (?) Don’t really know if it’s broken or not
Vertigo BROKEN MISSING Black screen
Vid.Stab Deshake BROKEN MISSING Problem adding effect to clip
Vid.Stab Detect and Transform OK (?) MISSING It could work but did not test extensively, and there are other ways to use stabilization in kdenlive
Visualize Motion Vectors MISSING ?
W3fdif BROKEN MISSING
Waveform BROKEN OK Should be in “Analysis and data”
Weave MISSING OK Could use some parameters
Xbr ? MISSING
Zoompan BROKEN (?) MISSING No effect/Don’t know what it does
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