Masked Editing

Masked editing

Choose the operation

Goal	Start from
Inpaint, remove, replace, or outpaint a region	Masked Video Inpaint
Continue a clip with protected picture and sound	Masked AV Extension — Single Clip
Continue several reviewed scenes	Masked AV Extension — Chain + Reference Image
Preserve both endpoints and generate the gap	Two-Clip Masked AV Bridge

Spatial editing path

1. Loop Source AV Target selects and encodes the current source interval.
2. Loop Mask Slice broadcasts one mask or selects the matching tracked-mask frames, including the repeated continuation overlap.
3. Grid Preview shows the effective H3 generation region.
4. Apply Target Mask attaches the spatial and audio denoise masks to the real joint H3 target.
5. The normal loop handles sampling, checkpoints, review, resume, and assembly.

What the mask means

• white = generate is the conventional inpainting view.
• white = preserve is useful when the supplied artwork describes protected content.

Use the same convention on Grid Preview and Apply Target Mask.

H3 reads effective 32×32 source-pixel cells. Exact conversion follows the video VAE's causal 1,4,4,4,4 source-frame groups and its 2×2 latent-token cells. A tracked mask must contain the exact raw scene span; a one-frame mask is broadcast. Legacy trilinear conversion remains available only for comparing older renders.

Ordinary AV extension creates its own temporal prefix mask and does not need a user-supplied spatial mask.

See the complete masked-editing guide for audio modes, tracked timelines, outpaint preparation, mask composition, and bridge target construction.