Add LTX 2.3 i2v API workflow

workflows/api/ltx-2.3-i2v.json

@@ -0,0 +1,640 @@
+{
+  "269": {
+    "class_type": "LoadImage",
+    "inputs": {
+      "image": "egyptian_queen.png"
+    }
+  },
+  "320:276": {
+    "class_type": "RandomNoise",
+    "inputs": {
+      "noise_seed": 42
+    }
+  },
+  "320:277": {
+    "class_type": "RandomNoise",
+    "inputs": {
+      "noise_seed": 60540193790228
+    }
+  },
+  "320:278": {
+    "class_type": "LTXVConcatAVLatent",
+    "inputs": {
+      "audio_latent": [
+        "320:307",
+        1
+      ],
+      "video_latent": [
+        "320:288",
+        0
+      ]
+    }
+  },
+  "320:279": {
+    "class_type": "LTXVAudioVAELoader",
+    "inputs": {
+      "ckpt_name": "ltx-2.3-22b-dev-fp8.safetensors"
+    }
+  },
+  "320:280": {
+    "class_type": "KSamplerSelect",
+    "inputs": {
+      "sampler_name": "euler"
+    }
+  },
+  "320:281": {
+    "class_type": "ManualSigmas",
+    "inputs": {
+      "sigmas": "0.85, 0.7250, 0.4219, 0.0"
+    }
+  },
+  "320:282": {
+    "class_type": "CFGGuider",
+    "inputs": {
+      "cfg": 1,
+      "model": [
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+        0
+      ],
+      "negative": [
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+        1
+      ],
+      "positive": [
+        "320:284",
+        0
+      ]
+    }
+  },
+  "320:283": {
+    "class_type": "SamplerCustomAdvanced",
+    "inputs": {
+      "guider": [
+        "320:314",
+        0
+      ],
+      "latent_image": [
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+        0
+      ],
+      "noise": [
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+      "sampler": [
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+      ],
+      "sigmas": [
+        "320:306",
+        0
+      ]
+    }
+  },
+  "320:284": {
+    "class_type": "LTXVCropGuides",
+    "inputs": {
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+      "negative": [
+        "320:304",
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+      "positive": [
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+      ]
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+  },
+  "320:285": {
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+    "inputs": {
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+      "model": [
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+        0
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+      "strength_model": 0.5
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+  },
+  "320:286": {
+    "class_type": "ResizeImagesByLongerEdge",
+    "inputs": {
+      "images": [
+        "320:290",
+        0
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+      "longer_edge": 1536
+    }
+  },
+  "320:287": {
+    "class_type": "LTXVLatentUpsampler",
+    "inputs": {
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+      "upscale_model": [
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+      "vae": [
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+  },
+  "320:288": {
+    "class_type": "LTXVImgToVideoInplace",
+    "inputs": {
+      "bypass": [
+        "320:302",
+        0
+      ],
+      "image": [
+        "320:289",
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+      ],
+      "latent": [
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+      "strength": 1,
+      "vae": [
+        "320:316",
+        2
+      ]
+    }
+  },
+  "320:289": {
+    "class_type": "LTXVPreprocess",
+    "inputs": {
+      "image": [
+        "320:286",
+        0
+      ],
+      "img_compression": 18
+    }
+  },
+  "320:290": {
+    "class_type": "ResizeImageMaskNode",
+    "inputs": {
+      "input": [
+        "269",
+        0
+      ],
+      "resize_type": "scale dimensions",
+      "resize_type.crop": "center",
+      "resize_type.height": [
+        "320:299",
+        0
+      ],
+      "resize_type.width": [
+        "320:312",
+        0
+      ],
+      "scale_method": "lanczos"
+    }
+  },
+  "320:291": {
+    "class_type": "KSamplerSelect",
+    "inputs": {
+      "sampler_name": "euler"
+    }
+  },
+  "320:292": {
+    "class_type": "ComfyMathExpression",
+    "inputs": {
+      "expression": "a/2",
+      "values.a": [
+        "320:312",
+        0
+      ]
+    }
+  },
+  "320:294": {
+    "class_type": "ComfyMathExpression",
+    "inputs": {
+      "expression": "a/2",
+      "values.a": [
+        "320:299",
+        0
+      ]
+    }
+  },
+  "320:295": {
+    "class_type": "EmptyLTXVLatentVideo",
+    "inputs": {
+      "batch_size": 1,
+      "height": [
+        "320:294",
+        1
+      ],
+      "length": [
+        "320:323",
+        1
+      ],
+      "width": [
+        "320:292",
+        1
+      ]
+    }
+  },
+  "320:296": {
+    "class_type": "LTXVImgToVideoInplace",
+    "inputs": {
+      "bypass": [
+        "320:302",
+        0
+      ],
+      "image": [
+        "320:289",
+        0
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+      "latent": [
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+      "vae": [
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+        2
+      ]
+    }
+  },
+  "320:297": {
+    "class_type": "LTXVAudioVAEDecode",
+    "inputs": {
+      "audio_vae": [
+        "320:279",
+        0
+      ],
+      "samples": [
+        "320:309",
+        1
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+    }
+  },
+  "320:298": {
+    "class_type": "ComfyMathExpression",
+    "inputs": {
+      "expression": "a",
+      "values.a": [
+        "320:300",
+        0
+      ]
+    }
+  },
+  "320:299": {
+    "_meta": {
+      "title": "Height"
+    },
+    "class_type": "PrimitiveInt",
+    "inputs": {
+      "value": 720
+    }
+  },
+  "320:300": {
+    "_meta": {
+      "title": "Frame Rate"
+    },
+    "class_type": "PrimitiveInt",
+    "inputs": {
+      "value": 25
+    }
+  },
+  "320:301": {
+    "_meta": {
+      "title": "Duration"
+    },
+    "class_type": "PrimitiveInt",
+    "inputs": {
+      "value": 5
+    }
+  },
+  "320:302": {
+    "_meta": {
+      "title": "Switch to Text to Video?"
+    },
+    "class_type": "PrimitiveBoolean",
+    "inputs": {
+      "value": false
+    }
+  },
+  "320:303": {
+    "class_type": "CLIPTextEncode",
+    "inputs": {
+      "clip": [
+        "320:317",
+        0
+      ],
+      "text": [
+        "320:327",
+        0
+      ]
+    }
+  },
+  "320:304": {
+    "class_type": "LTXVConditioning",
+    "inputs": {
+      "frame_rate": [
+        "320:298",
+        0
+      ],
+      "negative": [
+        "320:313",
+        0
+      ],
+      "positive": [
+        "320:303",
+        0
+      ]
+    }
+  },
+  "320:305": {
+    "class_type": "LTXVEmptyLatentAudio",
+    "inputs": {
+      "audio_vae": [
+        "320:279",
+        0
+      ],
+      "batch_size": 1,
+      "frame_rate": [
+        "320:298",
+        1
+      ],
+      "frames_number": [
+        "320:323",
+        1
+      ]
+    }
+  },
+  "320:306": {
+    "class_type": "ManualSigmas",
+    "inputs": {
+      "sigmas": "1.0, 0.99375, 0.9875, 0.98125, 0.975, 0.909375, 0.725, 0.421875, 0.0"
+    }
+  },
+  "320:307": {
+    "class_type": "LTXVSeparateAVLatent",
+    "inputs": {
+      "av_latent": [
+        "320:283",
+        0
+      ]
+    }
+  },
+  "320:308": {
+    "class_type": "SamplerCustomAdvanced",
+    "inputs": {
+      "guider": [
+        "320:282",
+        0
+      ],
+      "latent_image": [
+        "320:278",
+        0
+      ],
+      "noise": [
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+        0
+      ],
+      "sampler": [
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+      ],
+      "sigmas": [
+        "320:281",
+        0
+      ]
+    }
+  },
+  "320:309": {
+    "class_type": "LTXVSeparateAVLatent",
+    "inputs": {
+      "av_latent": [
+        "320:308",
+        0
+      ]
+    }
+  },
+  "320:310": {
+    "class_type": "CreateVideo",
+    "inputs": {
+      "audio": [
+        "320:297",
+        0
+      ],
+      "fps": [
+        "320:298",
+        0
+      ],
+      "images": [
+        "320:315",
+        0
+      ]
+    }
+  },
+  "320:311": {
+    "class_type": "LatentUpscaleModelLoader",
+    "inputs": {
+      "model_name": "ltx-2.3-spatial-upscaler-x2-1.1.safetensors"
+    }
+  },
+  "320:312": {
+    "_meta": {
+      "title": "Width"
+    },
+    "class_type": "PrimitiveInt",
+    "inputs": {
+      "value": 1280
+    }
+  },
+  "320:313": {
+    "class_type": "CLIPTextEncode",
+    "inputs": {
+      "clip": [
+        "320:317",
+        0
+      ],
+      "text": "pc game, console game, video game, cartoon, childish, ugly"
+    }
+  },
+  "320:314": {
+    "class_type": "CFGGuider",
+    "inputs": {
+      "cfg": 1,
+      "model": [
+        "320:285",
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+      "negative": [
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+      "positive": [
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+    }
+  },
+  "320:315": {
+    "class_type": "VAEDecodeTiled",
+    "inputs": {
+      "overlap": 64,
+      "samples": [
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+      "temporal_overlap": 4,
+      "temporal_size": 4096,
+      "tile_size": 768,
+      "vae": [
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+        2
+      ]
+    }
+  },
+  "320:316": {
+    "class_type": "CheckpointLoaderSimple",
+    "inputs": {
+      "ckpt_name": "ltx-2.3-22b-dev-fp8.safetensors"
+    }
+  },
+  "320:317": {
+    "class_type": "LTXAVTextEncoderLoader",
+    "inputs": {
+      "ckpt_name": "ltx-2.3-22b-dev-fp8.safetensors",
+      "device": "default",
+      "text_encoder": "gemma_3_12B_it_fp4_mixed.safetensors"
+    }
+  },
+  "320:318": {
+    "class_type": "LTXVConcatAVLatent",
+    "inputs": {
+      "audio_latent": [
+        "320:305",
+        0
+      ],
+      "video_latent": [
+        "320:296",
+        0
+      ]
+    }
+  },
+  "320:319": {
+    "_meta": {
+      "title": "Prompt"
+    },
+    "class_type": "PrimitiveStringMultiline",
+    "inputs": {
+      "value": "Egyptian royal in blue-and-gold headdress and high collar, white dress with golden embroidery and armbands, desert, robot soldiers in formation left and right. She walks steadily forward, head held level and gaze fixed ahead\u2014no dipping or lowering of the head. The camera performs a single, smooth push-in only: starting in a wider shot of her, the robots, and the desert, it moves steadily forward until she is in a medium or medium-close frame, then holds. She stops, posture and head still upright, and says: \u201cThe old gods are silent. I am not.\u201d Robot soldiers shift or march in place; sand and fabric move with the wind. No pull-back; the only camera move is the continuous push-in."
+    }
+  },
+  "320:323": {
+    "_meta": {
+      "title": "Math Expression (length)"
+    },
+    "class_type": "ComfyMathExpression",
+    "inputs": {
+      "expression": "a * b + 1",
+      "values.a": [
+        "320:301",
+        0
+      ],
+      "values.b": [
+        "320:300",
+        0
+      ]
+    }
+  },
+  "320:324": {
+    "class_type": "LoraLoader",
+    "inputs": {
+      "clip": [
+        "320:317",
+        0
+      ],
+      "lora_name": "gemma-3-12b-it-abliterated_lora_rank64_bf16.safetensors",
+      "model": [
+        "320:285",
+        0
+      ],
+      "strength_clip": 1,
+      "strength_model": 1
+    }
+  },
+  "320:325": {
+    "class_type": "TextGenerateLTX2Prompt",
+    "inputs": {
+      "clip": [
+        "320:324",
+        1
+      ],
+      "max_length": 2048,
+      "prompt": [
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+      "sampling_mode": "on",
+      "sampling_mode.min_p": 0.05,
+      "sampling_mode.presence_penalty": 0,
+      "sampling_mode.repetition_penalty": 1.05,
+      "sampling_mode.seed": 0,
+      "sampling_mode.temperature": 0.7,
+      "sampling_mode.top_k": 64,
+      "sampling_mode.top_p": 0.95,
+      "thinking": false,
+      "use_default_template": true
+    }
+  },
+  "320:326": {
+    "class_type": "PreviewAny",
+    "inputs": {
+      "source": [
+        "320:327",
+        0
+      ]
+    }
+  },
+  "320:327": {
+    "class_type": "ComfySwitchNode",
+    "inputs": {
+      "on_false": [
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+        0
+      ],
+      "on_true": [
+        "320:325",
+        0
+      ],
+      "switch": [
+        "320:328",
+        0
+      ]
+    }
+  },
+  "320:328": {
+    "_meta": {
+      "title": "Boolean (Enable Prompt Enhance)"
+    },
+    "class_type": "PrimitiveBoolean",
+    "inputs": {
+      "value": true
+    }
+  },
+  "75": {
+    "class_type": "SaveVideo",
+    "inputs": {
+      "codec": "auto",
+      "filename_prefix": "video/LTX_2.3_i2v",
+      "format": "auto",
+      "video": [
+        "320:310",
+        0
+      ]
+    }
+  }
+}