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Fix SAM-2 API compatibility issue in preprocessing pipeline #158

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kelseyee merged 1 commit into from
Nov 14, 2025
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Fix SAM-2 API compatibility issue in preprocessing pipeline #158

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4 changes: 4 additions & 0 deletions wan/modules/animate/preprocess/video_predictor.py
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Original file line number Diff line number Diff line change
Expand Up @@ -152,6 +152,10 @@ def init_state_v2(
# metadata for each tracking frame (e.g. which direction it's tracked)
inference_state["tracking_has_started"] = False
inference_state["frames_already_tracked"] = {}

# resolves KeyError: 'frames_tracked_per_obj' when using newer SAM-2 versions for running preprocessing in 'replacement mode'
inference_state["frames_tracked_per_obj"] = {}

# Warm up the visual backbone and cache the image feature on frame 0
self._get_image_feature(inference_state, frame_idx=0, batch_size=1)
return inference_state