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nodes_lt: fixes to latent conditioning at index > 0 (#8769)

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Harel Cain 2025-07-02 21:34:51 +02:00 committed by GitHub
parent 111f583e00
commit 9f1069290c
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1 changed files with 3 additions and 3 deletions
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comfy_extras/nodes_lt.py
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@ -134,8 +134,8 @@ class LTXVAddGuide:
_, num_keyframes = get_keyframe_idxs(cond)
latent_count = latent_length - num_keyframes
frame_idx = frame_idx if frame_idx >= 0 else max((latent_count - 1) * time_scale_factor + 1 + frame_idx, 0)
if guide_length > 1:
frame_idx = frame_idx // time_scale_factor * time_scale_factor # frame index must be divisible by 8
if guide_length > 1 and frame_idx != 0:
frame_idx = (frame_idx - 1) // time_scale_factor * time_scale_factor + 1 # frame index - 1 must be divisible by 8 or frame_idx == 0
latent_idx = (frame_idx + time_scale_factor - 1) // time_scale_factor
@ -144,7 +144,7 @@ class LTXVAddGuide:
def add_keyframe_index(self, cond, frame_idx, guiding_latent, scale_factors):
keyframe_idxs, _ = get_keyframe_idxs(cond)
_, latent_coords = self._patchifier.patchify(guiding_latent)
pixel_coords = latent_to_pixel_coords(latent_coords, scale_factors, True)
pixel_coords = latent_to_pixel_coords(latent_coords, scale_factors, causal_fix=frame_idx == 0) # we need the causal fix only if we're placing the new latents at index 0
pixel_coords[:, 0] += frame_idx
if keyframe_idxs is None:
keyframe_idxs = pixel_coords