nodes/kijai-ComfyUI-HunyuanVideoWrapper
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add option to do cfg sequentially

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kijai
2025-02-18 12:32:56 +02:00
parent e490745002
commit 2997d6510e
2 changed files with 75 additions and 34 deletions
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hyvideo/diffusion/pipelines/pipeline_hunyuan_video.py
+35 -1
View File
@@ -402,6 +402,7 @@ class HunyuanVideoPipeline(DiffusionPipeline):
guidance_scale: float = 1.0,
cfg_start_percent: float = 0.0,
cfg_end_percent: float = 1.0,
batched_cfg: bool = True,
num_videos_per_prompt: Optional[int] = 1,
eta: float = 0.0,
denoise_strength: float = 1.0,
@@ -664,8 +665,8 @@ class HunyuanVideoPipeline(DiffusionPipeline):
#print(self.scheduler.sigmas)
logger.info(f"Sampling {video_length} frames in {latents.shape[2]} latents at {width}x{height} with {len(timesteps)} inference steps")
comfy_pbar = ProgressBar(len(timesteps))
with self.progress_bar(total=len(timesteps)) as progress_bar:
for i, t in enumerate(timesteps):
@@ -771,6 +772,7 @@ class HunyuanVideoPipeline(DiffusionPipeline):
with torch.autocast(
device_type="cuda", dtype=self.base_dtype, enabled=True
):
if batched_cfg or not cfg_enabled:
noise_pred = self.transformer( # For an input image (129, 192, 336) (1, 256, 256)
latent_model_input, # [2, 16, 33, 24, 42]
t_expand, # [2]
@@ -784,13 +786,45 @@ class HunyuanVideoPipeline(DiffusionPipeline):
stg_mode=stg_mode,
return_dict=True,
)["x"]
else:
uncond = self.transformer(
latent_model_input[0].unsqueeze(0),
t_expand[0].unsqueeze(0),
text_states=input_prompt_embeds[0].unsqueeze(0),
text_mask=input_prompt_mask[0].unsqueeze(0),
text_states_2=input_prompt_embeds_2[0].unsqueeze(0),
freqs_cos=freqs_cos,
freqs_sin=freqs_sin,
guidance=guidance_expand[0].unsqueeze(0),
stg_block_idx=stg_block_idx,
stg_mode=stg_mode,
return_dict=True,
)["x"]
cond = self.transformer(
latent_model_input[1].unsqueeze(0),
t_expand[1].unsqueeze(0),
text_states=input_prompt_embeds[1].unsqueeze(0),
text_mask=input_prompt_mask[1].unsqueeze(0),
text_states_2=input_prompt_embeds_2[1].unsqueeze(0),
freqs_cos=freqs_cos,
freqs_sin=freqs_sin,
guidance=guidance_expand[1].unsqueeze(0),
stg_block_idx=stg_block_idx,
stg_mode=stg_mode,
return_dict=True,
)["x"]
# perform guidance
if cfg_enabled and not self.do_spatio_temporal_guidance:
if batched_cfg:
noise_pred_uncond, noise_pred_text = noise_pred.chunk(2)
noise_pred = noise_pred_uncond + self.guidance_scale * (
noise_pred_text - noise_pred_uncond
)
else:
noise_pred = uncond + self.guidance_scale * (cond - uncond)
elif self.do_classifier_free_guidance and self.do_spatio_temporal_guidance:
raise NotImplementedError
noise_pred_uncond, noise_pred_text, noise_pred_perturb = noise_pred.chunk(3)
nodes.py
+8 -1
View File
@@ -965,6 +965,7 @@ class HyVideoTextEncode:
"cfg": torch.tensor(hyvid_cfg["cfg"]) if hyvid_cfg is not None else None,
"start_percent": torch.tensor(hyvid_cfg["start_percent"]) if hyvid_cfg is not None else None,
"end_percent": torch.tensor(hyvid_cfg["end_percent"]) if hyvid_cfg is not None else None,
"batched_cfg": torch.tensor(hyvid_cfg["batched_cfg"]) if hyvid_cfg is not None else None,
}
return (prompt_embeds_dict,)
@@ -1003,6 +1004,7 @@ class HyVideoCFG:
"cfg": ("FLOAT", {"default": 2.0, "min": 0.0, "max": 100.0, "step": 0.01, "tooltip": "guidance scale"} ),
"start_percent": ("FLOAT", {"default": 0.0, "min": 0.0, "max": 1.0, "step": 0.01, "tooltip": "Start percentage of the steps to apply CFG, rest of the steps use guidance_embeds"} ),
"end_percent": ("FLOAT", {"default": 1.0, "min": 0.0, "max": 1.0, "step": 0.01, "tooltip": "End percentage of the steps to apply CFG, rest of the steps use guidance_embeds"} ),
"batched_cfg": ("BOOLEAN", {"default": True, "tooltip": "Calculate cond and uncond as a batch, increases memory usage but can be faster"}),
},
}
@@ -1012,12 +1014,13 @@ class HyVideoCFG:
CATEGORY = "HunyuanVideoWrapper"
DESCRIPTION = "To use CFG with HunyuanVideo"
def process(self, negative_prompt, cfg, start_percent, end_percent):
def process(self, negative_prompt, cfg, start_percent, end_percent, batched_cfg):
cfg_dict = {
"negative_prompt": negative_prompt,
"cfg": cfg,
"start_percent": start_percent,
"end_percent": end_percent,
"batched_cfg": batched_cfg
}
return (cfg_dict,)
@@ -1095,6 +1098,7 @@ class HyVideoTextEmbedsLoad:
"cfg": loaded_tensors.get("cfg", None),
"start_percent": loaded_tensors.get("start_percent", None),
"end_percent": loaded_tensors.get("end_percent", None),
"batched_cfg": loaded_tensors.get("batched_cfg", None),
}
return (prompt_embeds_dict,)
@@ -1185,10 +1189,12 @@ class HyVideoSampler:
cfg = float(hyvid_embeds.get("cfg", 1.0))
cfg_start_percent = float(hyvid_embeds.get("start_percent", 0.0))
cfg_end_percent = float(hyvid_embeds.get("end_percent", 1.0))
batched_cfg = hyvid_embeds.get("batched_cfg", True)
else:
cfg = 1.0
cfg_start_percent = 0.0
cfg_end_percent = 1.0
batched_cfg = False
if embedded_guidance_scale == 0.0:
embedded_guidance_scale = None
@@ -1291,6 +1297,7 @@ class HyVideoSampler:
guidance_scale=cfg,
cfg_start_percent=cfg_start_percent,
cfg_end_percent=cfg_end_percent,
batched_cfg=batched_cfg,
embedded_guidance_scale=embedded_guidance_scale,
latents=input_latents,
denoise_strength=denoise_strength,