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#Hitfilm express chroma key pro#

The chroma key effect also includes built-in spill suppression. Retain masks identify areas the key should ignore, while remove masks identify areas that should definitely be removed. Separate layers can be specified as additional masks to aid with the overall keying.The default Despilled Source usually provides best results.

Method: If Erode/Expand is set to a positive value, this determines the content of the expansion region.

Rather than using their actual color, instead they will take on the color of the pixels further inside the foreground. The recover setting can counter this problem by adjusting the colors of the outer pixels.

Recover Edge Color: A thin dark line can sometimes be seen on the keyed edges of white clothing or pale skin.

**This can be very effective for reclaiming the correct color in semi-transparent areas, such as glass. Subtract Background Color: Increasing the subtract setting removes the background color (for example, green if you’re using a green screen) from the semi-transparent areas of the image.Bias: Performs a white balance using the selected color, prior to applying the key.Softness: Blurs the alpha, creating a softer edge to the key.Used subtly this can improve overall keying quality without affecting edge detail. Despot Foreground/Background: Aims to remove holes in the background or foreground.If you need to add or remove pixels from the edge of the key this can be very useful. Erode/Expand: This works in a similar way to the standalone Erode White filter and can be used to expand or erode the alpha matte.This can be useful for adjusting the fine detail at the edges of the key, particularly around hair and semi-transparent areas. Gamma: Adjusts the strength of the key.This helps to create a softer edge, although increasing this setting too much will cause an undesirable band of semi-transparency around the edge. Clip Rollback: After adjusting the clip foreground you may want to return some of the semi-transparency to the outer edges of your foreground.If parts of your subject are semi-transparent, you should reduce the clip foreground to make it fully opaque. Clip Foreground: Clips the white point of the matte, returning detail to the foreground.If parts of your green screen are still visible this should be used to remove them. Clip Background: Crushes the black point of the matte, so that more parts of the image are removed.This can help with lower resolution footage. Pre-Blur: Applies a blur to the footage prior to keying.In practical use, it is usually best to try them at the minimum and maximum values to see which best suits your image. Balance & Hue Balance: These two settings adjust the emphasis of the chroma key, affecting the range of colors that are affected.It should be adjusted until the subject is isolated, though you don’t want to push the gain too far as you will start to lose edge detail.

This is best used for the initial background removal.

Gain: Gain is the base sensitivity of the chroma key.

Key adjustments should be made primarily using the Clip Foreground and Clip Background settings.

Note that when adaptive color is activated the Gain setting will have a minimal effect.

Adaptive color aims to improve results in such cases and can be particularly effective with fine detail areas such as lace and hair. Even slight changes in tone or brightness across your green screen can cause keying complications.

Adaptive Color: This method is particularly effective when working with uneven green screens.

*Note that the View menu will affect final output.

Result – shows the final composited result.

Despill Map – shows the area being spill suppressed.

Despill Mask – displays the despill mask, if one is being used.

This provides an accurate view of opaque and transparent areas. This mode does not show gradients of transparency. This makes it easy to see at a glance which areas are not fully opaque.

Status – shows a black and white matte.

Source – shows the original unkeyed layer.

#Hitfilm express chroma key pro#

This effect provides professional quality removal of any color from a source with precision control over edge detail, edge color correction and advanced spill replacement.Ĭhroma Key is available in the Composite: Pro Keying Pack.