CHV-electronics

Key Pro

The most precise and versatile greenscreen / bluescreen keyer for Final Cut Pro X, Final Cut Pro, Final Cut Express and Motion.

An Add-On plugin package for QC Integration FX.

The Manual


Key Pro is an Add-On package for CHV QC Integration FX. You need to have CHV QC Integration FX installed on your computer in order to use Key Pro. You can download CHV QC Integration FX directly from the Downloads section on our web-site. Install the Demo version of CHV QC Integration FX together with Key Pro.


Key Pro contains 5 Video Filters:


Key: Create a perfect greenscreen / bluescreen key
Shadow Key: Create a perfect greenscreen / bluescreen key and include the shadow of the actors in the mask
Clean Plate: Flatten the greenscreen / bluescreen area to a solid color
Spill Suppressor: Suppress any colored spill
Ambient Spill: Spills background light on the keyed object

To use the plugins you need to apply the desired filter to a video clip of your project and open its controls:


Final Cut Pro / Final Cut Express:

  • Open the Effects tab in the Browser window
  • Open the folder Video Generators
  • Open the folder CHV QC Key Pro
  • Drag one of the plugins on top of a clip to the timeline
  • Double-click the clip in the timeline to load it into the viewer

Motion:

  • Open the Library
  • Click on Filters
  • Click CHV QC Key Pro in the column to the right
  • Drag one of the plugins on top of a clip in the timeline or Layers tab
  • Click the plugin once in the Layers to open its controls


The Plugins



Key

Create a perfect greenscreen / bluescreen key.



Show
This popup menu selects the render mode.

Source: Shows the unchanged Source video in the canvas. Use this mode to select the color that you want to key.



Spill Suppressed: Shows the result of the spill suppression process. Use this mode to adjust the Spill Processor accordingly to your needs.



Mask: Shows the mask created by the keyer. Use this mode to setup the keyer.



Source/Spill/Mask/Final: Shows a combination of the Source video, the result from the Spill Processor, the created mask from the keyer and the final rendered video.



Final: Shows the final rendered video. Use this mode to render the final video.




[Key]
Color

This parameter selects the color that you want to key. You can practically choose any color you like. This feature makes it possible not only to key a green or blue screen, but also an imperfect background, as well as any other color that your screen might have, like red, orange or cyan. You will get the best result when you select a median tone of the screen color. Colors with a high saturation are preferred.



Color Sense
Key Pro is based on a special 3D color sense algorithm. The Color Sense parameter defines the sensitivity to the chosen color. A value around 30-35 works in most cases. A too low value will not capture all parts of the (green)screen. Too high values will key out too many areas and make the object transparent. Additionally you might see fuzzy edges and loss of detail when hair needs to be keyed.



Saturation Sense
This parameter defines the sensitivity to the saturation of the screen's color and therefore is most important to key correctly half transparent parts. Hair or see-thru clothes cover up the screen to a certain degree and dim the saturation of the screen's color. With this parameter you can create a perfect key for such difficult areas.



Value Sense
Value Sense defines the sensitivity to shadows and dark areas of the screen which were not lit up enough. This parameter should usually be set to a high value. Value Sense only affects areas with the defined color. In some cases, when the object consists of a lot of dark areas, a too high value might also affect some parts of the object. Use the Retain Dark Areas parameter to correct this.



Retain Dark Areas
This parameter defines the sensitivity to dark areas. Dark areas might have the same color value as defined with the Color parameter. Retain Dark Areas excludes the dark areas from being keyed out.



Chroma X Offset
Chroma Y Offset

Some video compression formats create an offset of the chroma channel (UV) in relation to the brightness channel (Y). The offset o the chroma channel can be corrected with these two parameters. Uncompressed video does not need to be corrected. DV and MPEG video and also JPEG images need an offset. Usually the offset is 2 pixels horizontally, but can vary depending on the compression format and compression factor.



Reduce Chroma Noise
Highly compressed video tends to have a lower resolution for the chroma channel. This may lead to noisy borders. In such a case the chroma channel needs to be processed by this noise reduction stage to prevent blocky keys.

Shrink Mask Border
This parameter is only useful when you video is of very low quality and you can't get rid of green/blue/colored borders. This function shrinks the mask and helps to create a good looking border.



Shrink Sharpness
The Shrink Sharpness parameter controls the sharpness of the border. This parameter works in combination with the Shrink Mask Border parameter, which makes the border of the mask softer.

Alpha Transparency Boost
This parameter changes the gamma curve of the alpha channel (border) of the mask. The Alpha Transparency Border parameter works only in combination with the Shrink Mask Border parameter.

Invert Mask
This checkbox inverts the mask.


[Spill Processor]
The integrated Spill Processor eliminates the green or blue spill which originates from the background. The first three parameters of this section work in the same way as the first three parameters of the Key section.

Color Sense Spill
Key Pro is based on a 3D color sense algorithm. The Color Sense parameter defines the sensitivity to the chosen color. A value around 30 works in most cases.



Saturation Sense Spill
This parameter defines the sensitivity to the saturation of the screen's color and should be set a ti a higher value as the Saturation Sense parameter from the Key section. A too low value does not capture those areas where the saturation of the screen is slightly lower.



Value Sense Spill
Value Sense defines the sensitivity to shadows and dark areas of the screen which were not lit up enough. This parameter should usually be set to a very high value. a too low value does not capture those areas that are darker (areas with a shadow and areas that are not lit up correctly).



Saturation Boost
If you need to set the parameters in this section to a high value then you might reduce the saturation of the video. Use this parameter to boost the saturation, if needed. Usually there is no need to do it, if the above parameters are set up correctly.



Shadow Key

Create a perfect greenscreen / bluescreen key and include the shadow of the actors in the mask.



Shadow key is the only keyer that also handles the shadow of the actors correctly.

This plugin works exactly the same as the plugin Key, with the exception that Shadow Key is capable to leave the shadow intact that the actors create by performing in the green/blue-screen stage. Therefore this plugin needs a clean plate of the stage.The camera should be stationary at all times, as it is in most cases too difficult to reproduce the exact camera movement twice; once for the clean plate and once with the actors.

Show
This popup menu selects the render mode.

Source: Shows the unchanged Source video in the canvas. Use this mode to select the color that you want to key.



Spill Suppressed: Shows the result of the spill suppression process. Use this mode to adjust the Spill Processor accordingly to your needs.



Mask: Shows the mask created by the keyer. Use this mode to setup the keyer.



Mask Shadow: Shows the mask for the shadow created in the Shadow section. Use this mode to setup the shadow mask.



Source/Shadow/Mask/Final: Shows a combination of the Source video, the created shadow mask, the created mask from the keyer and the final rendered video.



Final: Shows the final rendered video. Use this mode to render the final video.




[Key]
Color

This parameter selects the color that you want to key. You can practically choose any color you like. This feature makes it possible not only to key a green or blue screen, but also an imperfect background, as well as any other color that your screen might have, like red, orange or cyan. Colors with a high saturation are preferred.



Color Sense
Key Pro is based on a special 3D color sense algorithm. The Color Sense parameter defines the sensitivity to the chosen color. A value around 30-35 works in most cases. A too low value will not capture all parts of the (green)screen. Too high values will key out too many areas and make the object transparent. Additionally you might see fuzzy edges and loss of detail when hair needs to be keyed.



Saturation Sense
This parameter defines the sensitivity to the saturation of the screen's color and therefore is most important to key correctly half transparent parts. Hair or see-thru clothes cover up the screen to a certain degree and dim the saturation of the screen's color. With this parameter you can create a perfect key for such difficult areas.



Value Sense
Value Sense defines the sensitivity to shadows and dark areas of the screen which were not lit up enough. This parameter should usually be set to a high value. Value Sense only affects areas with the defined color. In some cases, when the object consists of a lot of dark areas, a too high value might also affect some parts of the object. Use the Retain Dark Areas parameter to correct this.



Retain Dark Areas
This parameter defines the sensitivity to dark areas. Dark areas might have the same color value as defined with the Color parameter. Retain Dark Areas excludes the dark areas from being keyed out.



Chroma X Offset
Chroma Y Offset

Some video compression formats create an offset of the chroma channel (UV) in relation to the brightness channel (Y). The offset o the chroma channel can be corrected with these two parameters. Uncompressed video does not need to be corrected. DV and MPEG video and also JPEG images need an offset. Usually the offset is 2 pixels horizontally, but can vary depending on the compression format and compression factor.



Reduce Chroma Noise
Highly compressed video tends to have a lower resolution for the chroma channel. This may lead to noisy borders. In such a case the chroma channel needs to be processed by this noise reduction stage to prevent blocky keys.

Shrink Mask Border
This parameter is only useful when you video is of very low quality and you can't get rid of green/blue/colored borders. This function shrinks the mask and helps to create a good looking border.



Shrink Sharpness
The Shrink Sharpness parameter controls the sharpness of the border. This parameter works in combination with the Shrink Mask Border parameter, which makes the border of the mask softer.

Alpha Transparency Boost
This parameter changes the gamma curve of the alpha channel (border) of the mask. The Alpha Transparency Border parameter works only in combination with the Shrink Mask Border parameter.

Invert Mask
This checkbox inverts the mask.


[Shadow]
Clean Plate

Apply a clean plate to this image well. The Clean Plate consists only of the correctly lit stage with no actors. The difference between the Clean Plate and the source video is used to create the shadow mask.



Shadow Strength
This defines the strength of the shadow mask. Higher values take more areas for the shadow into account.



Shadow Lower Threshold
The shadow is calculated by measuring the difference between the clean plate and the source video. Due to a variety of circumstances, like small variances in the light between the shots and the compression of the video, you will wind up with some noise. Use this parameter to eliminate the unwanted noise.



Shadow Reduce Noise
Use this parameter to additionally reduce low level noise in the shadow.

Shadow Opacity
This parameter defines the opacity of the shadow.




[Spill Processor]
The integrated Spill Processor eliminates the green or blue spill which originates from the background. The first three parameters of this section work in the same way as the first three parameters of the Key section.

Color Sense Spill
Key Pro is based on a 3D color sense algorithm. The Color Sense parameter defines the sensitivity to the chosen color. A value around 30 works in most cases.



Saturation Sense Spill
This parameter defines the sensitivity to the saturation of the screen's color and should be set a ti a higher value as the Saturation Sense parameter from the Key section.



Value Sense Spill
Value Sense defines the sensitivity to shadows and dark areas of the screen which were not lit up enough. This parameter should usually be set to a very high value.



Saturation Boost
If you need to set the parameters in this section to a high value then you might reduce the saturation of the video. Use this parameter to boost the saturation, if needed. Usually there is no need to do it, if the above parameters are set up correctly.



Clean Plate

Flatten the greenscreen / bluescreen area to a solid color.

Note: This plugin includes the same keyer as the plugin Key.

Show
This popup menu selects the render mode.

Source: Shows the unchanged Source video in the canvas. Use this mode to select the color that you want to key.



Mask: Shows the mask created by the keyer. Use this mode to setup the keyer.



Source/Mask/Final: Shows a combination of the Source video, the created mask from the keyer and the final rendered video.



Final: Shows the final rendered video. Use this mode to render the final video.




[Key]
Color

This parameter selects the color that you want to key. You can practically choose any color you like. This feature makes it possible not only to key a green or blue screen, but also an imperfect background, as well as any other color that your screen might have, like red, orange or cyan. Colors with a high saturation are preferred.



Color Sense
Key Pro is based on a special 3D color sense algorithm. The Color Sense parameter defines the sensitivity to the chosen color. A value around 30-35 works in most cases. A too low value will not capture all parts of the (green)screen. Too high values will key out too many areas and make the object transparent. Additionally you might see fuzzy edges and loss of detail when hair needs to be keyed.



Saturation Sense
This parameter defines the sensitivity to the saturation of the screen's color and therefore is most important to key correctly half transparent parts. Hair or see-thru clothes cover up the screen to a certain degree and dim the saturation of the screen's color. With this parameter you can create a perfect key for such difficult areas.



Value Sense
Value Sense defines the sensitivity to shadows and dark areas of the screen which were not lit up enough. This parameter should usually be set to a high value. Value Sense only affects areas with the defined color. In some cases, when the object consists of a lot of dark areas, a too high value might also affect some parts of the object. Use the Retain Dark Areas parameter to correct this.



Retain Dark Areas
This parameter defines the sensitivity to dark areas. Dark areas might have the same color value as defined with the Color parameter. Retain Dark Areas excludes the dark areas from being keyed out.



Chroma X Offset
Chroma Y Offset

Some video compression formats create an offset of the chroma channel (UV) in relation to the brightness channel (Y). The offset o the chroma channel can be corrected with these two parameters. Uncompressed video does not need to be corrected. DV and MPEG video and also JPEG images need an offset. Usually the offset is 2 pixels horizontally, but can vary depending on the compression format and compression factor.



Reduce Chroma Noise
Highly compressed video tends to have a lower resolution for the chroma channel. This may lead to noisy borders. In such a case the chroma channel needs to be processed by this noise reduction stage to prevent blocky keys.

Shrink Mask Border
This parameter is only useful when you video is of very low quality and you can't get rid of green/blue/colored borders. This function shrinks the mask and helps to create a good looking border.

Shrink Sharpness
The Shrink Sharpness parameter controls the sharpness of the border. This parameter works in combination with the Shrink Mask Border parameter, which makes the border of the mask softer.




[Clean]
Apply Effect %

This parameter defines how strong the flattening effect will be applied.



Saturation
Define the saturation of the keyed area.

Brightness
Define the brightness of the keyed area.



Spill Suppressor

Suppress any colored spill.

This plugin suppresses the green/blue spill without creating a key.

Show
This popup menu selects the render mode.

Source: Shows the unchanged Source video in the canvas. Use this mode to select the color that you want to key.



Spill Suppressed: Shows the result of the spill suppression process. Use this mode to adjust the Spill Processor accordingly to your needs.




[Spill Processor]
The integrated Spill Processor eliminates the green or blue spill which originates from the background. The first three parameters of this section work in the same way as the first three parameters of the Key section.

Color Sense Spill
Key Pro is based on a 3D color sense algorithm. The Color Sense parameter defines the sensitivity to the chosen color. A value around 30 works in most cases.



Saturation Sense Spill
This parameter defines the sensitivity to the saturation of the screen's color and should be set a ti a higher value as the Saturation Sense parameter from the Key section.



Value Sense Spill
Value Sense defines the sensitivity to shadows and dark areas of the screen which were not lit up enough. This parameter should usually be set to a very high value.



Saturation Boost
If you need to set the parameters in this section to a high value then you might reduce the saturation of the video. Use this parameter to boost the saturation, if needed. Usually there is no need to do it, if the above parameters are set up correctly.




Ambient Spill

Spills background light on the keyed object.



This plugin spills light from the background on the border of the keyed object. This creates a highly realistic effect, connecting the keyed object with the background.

Make sure that this plugins is processed after the keyer, when you apply this plugin to the video. When used with Motion CHV Ambient Spill must appear above CHV Key.



When used with Final Cut Pro or Final Cut Express, CHV Ambient Spill must be located underneath CHV Key.




[Ambient Spill]
Background

Apply the background image or video to this image well.

Range
This parameter defines how far the light spill will reach.



Spill Clarity
Defines how detailed the light spill will be applied on the keyed object. This parameter should usually be set to a low value to create the most realistic effect.



Visibility
Defines the visibility of the light spill.



Show Background
Select this checkbox to show the image from the Background image well in the background.





(C) 2010 CHV-Electronics, Inc.
Christoph Vonrhein

Key Pro
An Add-On package for
QC Integration FX

BUY NOW! ONLY $95

If you have are any questions or requests please use our contact-form. 2002-2017 by CHV-Electronics Inc., Christoph Vonrhein. All rights reserved.
Apple, the Apple logo, Macintosh, Mac, Mac OS X, Quicktime, Motion, Final Cut Pro X, Final Cut Pro, Final Cut Studio and Final Cut Express are either registered trademarks or trademarks of Apple Computer.