# VACEFlowAnnotator Compute forward/backward optical flow between frames using VACE's flow model to capture motion cues. ## Inputs - `images` – IMAGE batch with ≥2 frames. - `flow_direction` (forward/backward/bidirectional) and `resolution`. - Optional `model_path`. ## Outputs - `flow_maps` – IMAGE tensor encoding motion vectors. ## Usage Tips 1. Only feed batches produced by VHS loaders or custom frame stacks. 2. Use bidirectional mode when you need symmetric motion guidance. ## Additional Resources - [Full documentation](docs/nodes/vace-annotators/VACE_ANNOTATORS.md#vace-annotator-flow)