image to video type not support

### Custom Node Testing

- [ ] I have tried disabling custom nodes and the issue persists (see [how to disable custom nodes](https://docs.comfy.org/troubleshooting/custom-node-issues#step-1%3A-test-with-all-custom-nodes-disabled) if you need help)

### Expected Behavior

generate it as expect

### Actual Behavior

### Steps to Reproduce

### Debug Logs

```powershell
2026-06-06T11:00:02.919580 - !!! Exception during processing !!! Trying to convert Float8_e4m3fn to the MPS backend but it does not have support for that dtype.
2026-06-06T11:00:02.957234 - Traceback (most recent call last):
File "/Applications/ComfyUI.app/Contents/Resources/ComfyUI/execution.py", line 535, in execute
output_data, output_ui, has_subgraph, has_pending_tasks = await get_output_data(prompt_id, unique_id, obj, input_data_all, execution_block_cb=execution_block_cb, pre_execute_cb=pre_execute_cb, v3_data=v3_data)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Applications/ComfyUI.app/Contents/Resources/ComfyUI/execution.py", line 335, in get_output_data
return_values = await _async_map_node_over_list(prompt_id, unique_id, obj, input_data_all, obj.FUNCTION, allow_interrupt=True, execution_block_cb=execution_block_cb, pre_execute_cb=pre_execute_cb, v3_data=v3_data)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Applications/ComfyUI.app/Contents/Resources/ComfyUI/execution.py", line 309, in _async_map_node_over_list
await process_inputs(input_dict, i)
File "/Applications/ComfyUI.app/Contents/Resources/ComfyUI/execution.py", line 297, in process_inputs
result = f(**inputs)
^^^^^^^^^^^
File "/Applications/ComfyUI.app/Contents/Resources/ComfyUI/comfy_api/internal/__init__.py", line 149, in wrapped_func
return method(locked_class, **inputs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Applications/ComfyUI.app/Contents/Resources/ComfyUI/comfy_api/latest/_io.py", line 1833, in EXECUTE_NORMALIZED
to_return = cls.execute(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Applications/ComfyUI.app/Contents/Resources/ComfyUI/comfy_extras/nodes_custom_sampler.py", line 967, in execute
samples = guider.sample(noise.generate_noise(latent), latent_image, sampler, sigmas, denoise_mask=noise_mask, callback=callback, disable_pbar=disable_pbar, seed=noise.seed)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Applications/ComfyUI.app/Contents/Resources/ComfyUI/comfy/samplers.py", line 1052, in sample
output = executor.execute(noise, latent_image, sampler, sigmas, denoise_mask, callback, disable_pbar, seed, latent_shapes=latent_shapes)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Applications/ComfyUI.app/Contents/Resources/ComfyUI/comfy/patcher_extension.py", line 112, in execute
return self.original(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Applications/ComfyUI.app/Contents/Resources/ComfyUI/comfy/samplers.py", line 985, in outer_sample
self.inner_model, self.conds, self.loaded_models = comfy.sampler_helpers.prepare_sampling(self.model_patcher, noise.shape, self.conds, self.model_options)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Applications/ComfyUI.app/Contents/Resources/ComfyUI/comfy/sampler_helpers.py", line 143, in prepare_sampling
return executor.execute(model, noise_shape, conds, model_options=model_options, force_full_load=force_full_load, force_offload=force_offload)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Applications/ComfyUI.app/Contents/Resources/ComfyUI/comfy/patcher_extension.py", line 112, in execute
return self.original(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Applications/ComfyUI.app/Contents/Resources/ComfyUI/comfy/sampler_helpers.py", line 157, in _prepare_sampling
comfy.model_management.load_models_gpu([model] + models, memory_required=memory_required, minimum_memory_required=minimum_memory_required, force_full_load=force_full_load)
File "/Applications/ComfyUI.app/Contents/Resources/ComfyUI/comfy/model_management.py", line 817, in load_models_gpu
loaded_model.model_load(lowvram_model_memory, force_patch_weights=force_patch_weights)
File "/Applications/ComfyUI.app/Contents/Resources/ComfyUI/comfy/model_management.py", line 579, in model_load
self.model_use_more_vram(use_more_vram, force_patch_weights=force_patch_weights)
File "/Applications/ComfyUI.app/Contents/Resources/ComfyUI/comfy/model_management.py", line 607, in model_use_more_vram
return self.model.partially_load(self.device, extra_memory, force_patch_weights=force_patch_weights)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Applications/ComfyUI.app/Contents/Resources/ComfyUI/comfy/model_patcher.py", line 1113, in partially_load
raise e
File "/Applications/ComfyUI.app/Contents/Resources/ComfyUI/comfy/model_patcher.py", line 1110, in partially_load
self.load(device_to, lowvram_model_memory=current_used + extra_memory, force_patch_weights=force_patch_weights, full_load=full_load)
File "/Applications/ComfyUI.app/Contents/Resources/ComfyUI/comfy/model_patcher.py", line 908, in load
self.patch_weight_to_device(key, device_to=device_to)
File "/Applications/ComfyUI.app/Contents/Resources/ComfyUI/comfy/model_patcher.py", line 748, in patch_weight_to_device
temp_weight = convert_func(temp_weight, inplace=True)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Applications/ComfyUI.app/Contents/Resources/ComfyUI/comfy/ops.py", line 1241, in convert_weight
return weight.dequantize()
^^^^^^^^^^^^^^^^^^^
File "/Users/luke/ComfyUI/.venv/lib/python3.12/site-packages/comfy_kitchen/tensor/base.py", line 286, in dequantize
full = self.layout_cls.dequantize(qdata, self._params)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Users/luke/ComfyUI/.venv/lib/python3.12/site-packages/comfy_kitchen/tensor/fp8.py", line 69, in dequantize
return ck.dequantize_per_tensor_fp8(qdata, params.scale, params.orig_dtype)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Users/luke/ComfyUI/.venv/lib/python3.12/site-packages/comfy_kitchen/__init__.py", line 87, in dequantize_per_tensor_fp8
return torch.ops.comfy_kitchen.dequantize_fp8(x, scale, dtype_code)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Users/luke/ComfyUI/.venv/lib/python3.12/site-packages/torch/_ops.py", line 1209, in __call__
return self._op(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Users/luke/ComfyUI/.venv/lib/python3.12/site-packages/torch/_library/custom_ops.py", line 347, in backend_impl
result = self._backend_fns[device_type](*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Users/luke/ComfyUI/.venv/lib/python3.12/site-packages/torch/_compile.py", line 54, in inner
return disable_fn(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Users/luke/ComfyUI/.venv/lib/python3.12/site-packages/torch/_dynamo/eval_frame.py", line 1181, in _fn
return fn(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^
File "/Users/luke/ComfyUI/.venv/lib/python3.12/site-packages/torch/_library/custom_ops.py", line 382, in wrapped_fn
return fn(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^
File "/Users/luke/ComfyUI/.venv/lib/python3.12/site-packages/comfy_kitchen/backends/eager/quantization.py", line 405, in _op_dequantize_fp8
return impl(**kwargs)
^^^^^^^^^^^^^^
File "/Users/luke/ComfyUI/.venv/lib/python3.12/site-packages/comfy_kitchen/backends/eager/quantization.py", line 60, in dequantize_per_tensor_fp8
dq_tensor = x.to(dtype=output_type) * scale.to(dtype=output_type)
^^^^^^^^^^^^^^^^^^^^^^^
TypeError: Trying to convert Float8_e4m3fn to the MPS backend but it does not have support for that dtype.

2026-06-06T11:00:02.971347 - Prompt executed in 00:28:42

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```

### Other

_No response_