The sequence containing the paint corrections or image and the source of the motion vectors.

Displays the GPU used for rendering when Use GPU if available is enabled. Local GPU displays Not available when:

• Use CPU is selected as the default blink device in the Preferences.

• no suitable GPU was found on your system.

• it was not possible to create a context for processing on the selected GPU, such as when there is not enough free memory available on the GPU.

You can select a different GPU, if available, by navigating to the Preferences and selecting an alternative from the default blink device dropdown.

Note:   Selecting a different GPU requires you to restart Nuke before the change takes effect.

When enabled, rendering occurs on the Local GPU specified, if available, rather than the CPU.

Note:  Enabling this option with no local GPU allows the script to run on the GPU whenever the script is opened on a machine that does have a GPU available.
You should also select this if you wish to render from the command line with the --gpu option.

See Windows, Mac OS X and macOS, or Linux for more information on the GPUs Nuke supports.

Displays the total number of user keyframes added to the sequence.

Displays the current user keyframe.

Click to jump to the previous user keyframe.

Click to jump to the next user keyframe.

Click to add a user keyframe at the current frame in the sequence.

Click to delete the user keyframe at the current frame in the sequence.

Click to delete all keyframes in the sequence, both user and baked.

Controls the position of the pins at the current keyframe.

To Corners

Displays the position of the pins at the current frame, once you've set a user keyframe.

Click to copy and paste the From1-4 values to the To1-4 values.

Click to calculate the position of the pins for each frame specified in the Render dialog. The baked position is driven by the vectors, independent of the user keyframes, so the pins need less drastic correction than between keyframes.

Select the filtering algorithm to use when remapping pixels from their original positions to new positions. This allows you to avoid problems with image quality, particularly in high contrast areas of the frame (where highly aliased, or jaggy, edges may appear if pixels are not filtered and retain their original values).

• Impulse - remapped pixels carry their original values.

• Cubic - remapped pixels receive some smoothing.

• Keys - remapped pixels receive some smoothing, plus minor sharpening (as shown by the negative -y portions of the curve).

• Simon - remapped pixels receive some smoothing, plus medium sharpening (as shown by the negative -y portions of the curve).

• Rifman - remapped pixels receive some smoothing, plus significant sharpening (as shown by the negative -y portions of the curve).

• Mitchell - remapped pixels receive some smoothing, plus blurring to hide pixelation.

• Parzen - remapped pixels receive the greatest smoothing of all filters.

• Notch - remapped pixels receive flat smoothing (which tends to hide moire patterns).

• Lanczos4, Lanczos6, and Sinc4 - remapped pixels receive sharpening which can be useful for scaling down. Lanczos4 provides the least sharpening and Sinc4 the most.

Pin 1 controls the bottom left corner of the warp.

Pin 2 controls the bottom right corner of the warp.

Pin 3 controls the top right corner of the warp.

Pin 4 controls the top left corner of the warp.

Click to set the From controls to the size of the input format.

Click to copy and paste the To1-4 values to the From1-4 values.

Sets the trade-off between warping things well for nearby frames against frames further away. Each shot has its own optimum frame distance value so try several values to see what produces the best results.

For example, warping up to 20-30 frames away from the reference frame, or sequences with rapid motion, typically require values closer to 1 frame. Warping over 100 frames away, or sequences with slower motion, typically require values closer to 64 frames.

Sets the type of output produced by VectorCornerPin:

• warped src - output the warped Source input using the reference frame as a template for warping the rest of the sequence.

• st-map - output the st-map for the warp from the reference frame to the current frame. This is useful if you want to bake the results of the node for later.

• st-map inverse - output the inverse st-map for the warp, that is, the warp from the current frame to the reference frame.

Controls the amount of blur applied to the internally calculated STMap. Increasing the blur size can remove local distortions in the warped result, particularly in longer sequences.

These functions run prior to starting rendering in execute(). If they throw an exception, the render aborts.

These functions run prior to starting rendering of each individual frame. If they throw an exception, the render aborts.

These functions run after each frame is finished rendering. They are not called if the render aborts. If they throw an exception, the render aborts.

These functions run after rendering of all frames is finished. If they throw an error, the render aborts.