VACE Mask Generator

VACE Mask Generator — builds mask + control_frames sequences for all VACE generation modes. Modes: End Extend — generate after the clip Pre Extend — generate before the clip Middle Extend — generate between two halves (split at split_index) Edge Extend — generate between end and start edges (looping) Join Extend — heal two halves with edge_frames context each side Bidirectional — generate before AND after the clip Frame Interpolation — insert new frames between each source pair Replace/Inpaint — regenerate a range of frames in-place Video Inpaint — regenerate masked spatial regions (requires inpaint_mask) Keyframe — place keyframe images at positions, generate between them Upscale — enhance already-upscaled frames; anchor start/end reference frames Mask colors: Black = keep original, White = generate new. Control frames: original pixels where kept, grey (#7f7f7f) where generating. Parameter usage by mode: target_frames : End, Pre, Middle, Edge, Join, Bidirectional, Keyframe split_index : End, Pre, Middle, Bidirectional, Frame Interpolation, Replace/Inpaint edge_frames : Edge, Join, Replace/Inpaint inpaint_mask : Video Inpaint only keyframe_positions : Keyframe — frame placement; Upscale — indices to anchor exactly (reuse same value) Note: trimmed_clip must not exceed target_frames for modes that use it. If your source is longer, use VACE Source Prep upstream to trim it first.