Start here with two toggles at the top: Single Image or Image Sequence.

Single Image — set Color to your photo (under Create Passes) and click Generate Normal + Depth. The local AI reconstructs the surface geometry from your photo — this is what lets lights react to real direction and falloff instead of a flat 2D image. Already have Normal/Depth/Roughness maps from somewhere else? Switch to the Load Passes tab instead.

Image Sequence — point Input Folder at a folder of numbered frames (export your video as frames first, with any editor or Blender's own VSE). Range Start/End auto-fills to match the files actually in that folder — use the refresh icon next to it (Sync Range) if you add more frames later, or to snap back to the Blender timeline's own range before picking a folder. Click Preview First Frame to load one representative frame into the settings above and dial everything in before running the full batch in 4. From then on, the timeline follows along automatically — scrub or play, and whichever frame you land on regenerates and shows up in the settings above (and in Open Live Preview, see 3) on its own.

Builds as soon as Normal + Depth are ready — this gives your lights real geometry to interact with, so shading and falloff look correct from any camera angle, not just straight-on. Detail and Displace rebuild it live as you adjust them.

Click Add Light and adjust position, color, and intensity — add as many as your scene needs. The relit result updates live as you drag the sliders, no re-generating. Want the lighting to change over time? Use Insert Keyframe here to animate any light property.

Matches whichever mode you picked in 1:

Single Image mode — Export Relit Image saves the current still. If you keyframed your lights in 3, use Export Frame Range instead: set Start/End, choose which passes you need (Relit, Light Pass, Normal, Depth, Roughness, Alpha), and export the whole lighting animation as an image sequence. Normal/Depth/Roughness/Alpha don't change frame to frame (same photo) — they're just re-saved under frame-numbered filenames, not recomputed, so this is fast.

Image Sequence mode — choose your passes and output format (PNG, JPEG, TIFF, or OpenEXR), then click Process Sequence. It runs every frame in the range set in 1, reading your lights' current (or keyframed) values at each one.

Both modes skip frames whose output already exists (tick Reprocess All to force redoing everything) — so if a batch gets interrupted, just run it again to pick up where it left off.