MasterBlend

Master Blend

Example of look:

Other modes:

Illustration of usage:

The primary intent of this filter is to do color correction which varies along timeline. I face it with underwater shots.

This filter works in XRGB mode only.

Internal filters that can be used:

• levels (sampling is disabled)
• brightness/contrast
• HSV adjust
• sharpen

Internal logo works, but slow (there is room for improvement both on my side and logo side).
However, with logo it is possible to use parameter blending, for example to move it from left to right.
If you want to animate logo, fflayer filter is more sane for this.

It may work with many other plugins, however behavior is not guaranteed. It may crash, or it may do nothing.

In general, what to expect from worker filter:

• It must work in XRGB
• It cannot use timeline - nothing temporal will work
• It cannot alter image format, dimension or structure
• It must use parameters and dialog to edit them
• It is better if it supports Preview

About parameter blending

By default animation works by blending end result of filter stacks.
This is similar to builtin "blend curve" facility and works great with color correction filters.
Another possibility is to interpolate all parameters and as result apply different (interpolated) filter to every frame.
Whether this option produce anything depends on how parameters are represented. Many filters use continuous numeric parameters which can be smoothly interpolated. Other are not easy (for example "gradation curves").

Known issues

Performance can be better in several situations.

Official VirtualDub can run it with severe limitations: internal plugins cannot be used, color picking not available, timeline not synchronized, etc.