Damage Skew
This effect takes its name from the control on many professional video tape recorders which would affect the tensioning of the ribbon of tape that wraps around the playback heads. Altering the skew control during playback of video would cause various undesirable artifacts including image shearing, visual noise (or what a viewer might call “static”), vertical and horizontal hold issues, and more…
We’ve taken all this a bit beyond simple tape playback malfunction and we’ve added enough properties to allow you to use Skew to create effects reminiscent of a range of analog badness from weak analog antenna signals to consumer VCR tracking glitches.
There are a variety of property values to adjust to create your own variations to create a nearly infinite range of variations.
DE_Skew Parameters
Reset
changes the properties in Artifact back to their default state.
Options
will be the link to click to register your copy of Digieffects Damage, if no valid registration information is found on your system. Otherwise, it will function the same as “About”
About
will show you the version of the software you are running
Digieffects
In the twirl-down menu labeled “Digieffects” is the Digieffects preset bar.
Source Blend
Controls how much of the original, unaltered image is blended in the final image. A value of zero shows no original image, a high value of near 100...90 for example...will leave very little effect visible and a value of 100 will show only the original image and no effect, but the rendering will be zippy...
Random Seed
The Random Seed controls the way the “randomness” of the effect is implemented over time. While the property range runs from 0-32000, the value doesn't represent the 'amount' of randomness so much as simply different randomness. Note that this value can be used in multiple cases with the same value and the results will be predictable and similar in cases where consistent use of the effect is required in several instances. If the results you are getting starts looking too predictable, simply change the Random Seed.
Color
Tint Color
Using the eyedropper, or by clicking on the color swatch, you can set a color value to tint your video. Setting the value to white will have no discernible effect on your image as that is the ‘zero state’ of this property. Moving the color value toward gray or a saturated color will have a visible effect on the image.
Brightness Lift
Slide this property into positive values to brighten your image, or into negative values to darken your image.
Bright Variance
This control creates the range of deviation in the Brightness Lift value over time. More variability (the range is from 0-100) will create more erratic light and dark fluctuations in your image..
Contrast
The Contrast value setting is similar to contrast settings in other software you have probably encountered. The range is -50 to +50 with positive values increasing contrast, and negative values decreasing the contrast.
Contrast Variance
As with other Var (variable) controls in the Skew effect, this will determine the amount of variation in the contrast value allowed over time. The more color and brightness change is introduced in this section, the more it affects the color flickering of the effect.
Noise
Visual image noise is one of the typical symptoms of a defective analog video signal. There are a variety of noise generators in Skew that are capable of very convincing results.
Noise Max
Introducing noise into your image can be used to portray maladjusted VCR tracking or a weak analog tuner signal. Higher values create more noise. The maximum value of 100 will create an image that appears to be faintly showing through video “snow.”
Noise Variance
When the Noise Max setting is above zero, the Noise Variance control will create fluctuations in the value of the Noise Max value over time.
Micro Noise
This control differs from the Noise Max control in that the noise generated from this control will not form into ‘bands’. Micro noise will generate noise across the image evenly.
Noise Width
Noise Width can be used to introduce horizontal 'smearing' or 'scratching' type of noise defects, usually seen on old analog VTRs.
Noise TempoThis is how often the noise will change. Larger numbers will cause the noise patterning to change LESS often (more frames between noise changes)
Distortion
There are 2 components to the distortion which are combined together to give a single horizontal displacement value. The first component is defined by “Max Distortion” and the Tempo parameters. The second component is defined using 2 sine waves added together with a random value added in. These second components are controlled by the Amplitude, Frequency,
Speed and Offset Variance parameters.
Distortion Min
This defines the minimum amount of horizontal distortion allowed. Larger number create more left-right distortions.
Distortion Max
Similarly, the maximum amount is just that.
Note: the difference between the minimum and maximum value specifies the range of horizontal distortion allowed. Which means, if the two are identical, then the distortion will be very uniform. If the two are very different, then the distortions allowed can be any values in between to create a more natural effect.
Tempo Min
This is the minimum number of frames to hold a distortion phase. The distortion changes its value after a randomly selected number of frames between “Min Tempo” and “Max Tempo”.
Larger values hold the distortion for a longer amount of time.
Max Tempo
This is the maximum number of frames to hold a distortion phase. The distortion changes its value after a randomly selected number of frames between 'Min Tempo' and 'Max Tempo'. Larger values hold the distortion for a longer amount of time.
Amplitude 1
This controls the amplitude of the first sine-wave generator.
Amplitude 2
This controls the amplitude of the second sine-wave generator.
Frequency 1
This controls the frequency of the first sine-wave generator.
Frequency 2
This controls the frequency of the second sine-wave generator.
Speed 1
This controls the speed of the first sine-wave generator.
Speed 2
This controls the speed of the second sine-wave generator.
Offset Variance
This adds a random value to the sine wave amplitude.
Glow
Glow is intended to create a glow pattern around the video noise after it has been distorted
which often occurs on older television receivers.
Glow Size
This defines the radius of the glow.
Glow Intensity
This controls the brightness of the glow.
Glow Threshold
This controls the minimum luminance value a pixel must
have before it will begin to glow. Higher values prevent
the darker portions of the image from glowing.
Ghosting
Ghosting creates a horizontal visual 'echo' that simulates reflections and interference patterns of electromagnetic energy as it is transmitted through space to its reception point. There are at most 3 ghost patterns, and you can define the maximum “sway” with the Ghost Offset parameters. The Weight parameters define the opacity of the particular ghost image. Note that it's possible to over-weight the ghost images, which will make the image brighter than the original.
Ghost Offset 1
Defines the maximum horizontal movement per frame of
this ghost image.
Ghost Offset 2
Defines the maximum horizontal movement per frame of
this ghost image.
Ghost Offset 3
Defines the maximum horizontal movement per frame of
this ghost image.
Primary Weight
This is the opacity of the source (un-ghosted) signal.
Ghost 1 Weight
Controls the opacity of this ghost image.
Ghost 2 Weight
Controls the opacity of this ghost image.
Ghost 3 Weight
Controls the opacity of this ghost image.
Bar
This creates a dark bar that runs vertically on an image when it’s refresh phase
is slightly different than the video capture device recording its screen. It’s a
bit technical, but you can see the real-world effect easily yourself by recording
a computer video monitor with a video camera.
Bar Height
Control the vertical size of your bars with this control.
Bar Ripple Frequency
The bars of distortion or black that roll through you footage have the ability to present an effect with many, small bars (lines really) in the picture, very close together. The higher the frequency value, the smaller and closer spaced the lines become.
Bar Darkness
This controls how dark the bar is. Larger values make a darker bar.
Vertical Hold
This simulates a malfunctioning vertical hold mechanism, or the loss of a vertical
sync due to electromagnetic interference.
Roll Probability
This defines the chance per frame that a vertical hold malfunction “roll” will
occur. If it occurs, Roll Length defines the maximum number of frames that the
vertical hold malfunction will last.
Roll Length
Defines the maximum duration of a vertical hold malfunction, expressed in
frames.
Roll Speed
This defines the maximum speed that a the vertical hold will 'roll.'
