Offset

Offset uses two different images: the main Input and the Deformation map. The author manual explicitly ties horizontal and vertical displacement to channels of the secondary image. A serial chain such as “source → noise → Offset” therefore does not replace a separate map: it loses the separation between content and control.

For the selected map channel, black supplies one offset and white the other; intermediate values interpolate between them. Equal Black and White values create a constant displacement on that axis. Symmetric negative and positive endpoints make 0.5 neutral. Check this with a technical map of known values, not its appearance through a Viewer transform.

Horizontal Source and Vertical Source are independent. Map Red can control X while Green controls Y. This does not independently move the red and green channels of the source: it changes the image displacement field. If map alpha is 1 everywhere, selecting Alpha produces a constant White value rather than varying ripples.

Scale controls effect magnitude. Render: Warp controls the application of the warp and should not be described as filtering accuracy. Quality relates to Under-Sample Resolution and Filtering: start at normal calculation resolution, then compare methods on fine lines and high-contrast boundaries.

Edges selects pixels outside the input image bounds. Black, Wrap and Duplicate produce different edges, so compare them on a source with distinctive opposite sides. The historical author manual describes an Area limitation with Wrap/Duplicate that can fall back to Pixel. Treat this as a version-specific behavior to check in the installed build, not a universal rule for every Resolve version.

An ordinary mask blends the source with the already deformed image. The historical Krokodove warp mask reduces the deformation itself; their soft boundaries therefore differ. The three supplied Inspector screenshots do not establish every current mask connector. This page shows the reviewed two-image path, while the local lesson uses an external Merge and its Effect Mask.

For reproducibility, map and source need compatible dimensions, placement, timing and value interpretation. Displacement can move detail beyond the original frame, so RGB inspection does not replace alpha review. Compare the result over a contrasting background before compositing and review the full animated range.