{ "id": "67110009-2127-4c95-9ec8-dbd2483f3c20", "revision": 0, "last_node_id": 431, "last_link_id": 893, "nodes": [ { "id": 103, "type": "MarkdownNote", "pos": [ -1368.2417307877938, 2309.599369207993 ], "size": [ 911.96875, 1280.0625 ], "flags": {}, "order": 0, "mode": 0, "inputs": [], "outputs": [], "title": "Model Links", "properties": {}, "widgets_values": [ "- Huggingface: [Lightricks/LTX-2.3](https://huggingface.co/Lightricks/LTX-2.3/)\n- Github: [LTX-2](https://github.com/Lightricks/LTX-2)\n\n## LTX-2.3 Prompting Tips\n\n1. **Core Actions**: Describe events and actions as they occur over time \n2. **Visual Details**: Describe all visual details you want to appear in the video \n3. **Audio**: Describe sounds and dialogue needed for the scene\n\n## Report LTX-2.3 Issues\nTo report any issues when running this workflow, [go to GitHub](https://github.com/Lightricks/ComfyUI-LTXVideo/issues)\n\n## Model Links (for Local Users)\n\n**latent_upscale_models**\n\n- [ltx-2.3-spatial-upscaler-x2-1.1.safetensors](https://huggingface.co/Lightricks/LTX-2.3/resolve/main/ltx-2.3-spatial-upscaler-x2-1.1.safetensors)\n\n**checkpoints**\n\n- BF16: [ltx-2.3-22b-dev.safetensors](https://huggingface.co/Lightricks/LTX-2.3/resolve/main/ltx-2.3-22b-dev.safetensors)\n- FP8: [ltx-2.3-22b-dev-fp8.safetensors](https://huggingface.co/Lightricks/LTX-2.3-fp8/resolve/main/ltx-2.3-22b-dev-fp8.safetensors)\n\n**loras**\n\n- [ltx-2.3-22b-distilled-lora-384.safetensors](https://huggingface.co/Lightricks/LTX-2.3/resolve/main/ltx-2.3-22b-distilled-lora-384.safetensors)\n\n**text_encoders**\n\n- [gemma_3_12B_it_fp4_mixed.safetensors](https://huggingface.co/Comfy-Org/ltx-2/resolve/main/split_files/text_encoders/gemma_3_12B_it_fp4_mixed.safetensors)\n\n\n## Model Storage Location\n\n```\nšŸ“‚ ComfyUI/\nā”œā”€ā”€ šŸ“‚ models/\nā”‚ ā”œā”€ā”€ šŸ“‚ latent_upscale_models/\nā”‚ ā”‚ ā””ā”€ā”€ ltx-2.3-spatial-upscaler-x2-1.0.safetensors\nā”‚ ā”œā”€ā”€ šŸ“‚ checkpoints/\nā”‚ ā”‚ ā”œā”€ā”€ ltx-2.3-22b-dev-fp8.safetensors\nā”‚ ā”‚ ā””ā”€ā”€ ltx-2.3-22b-dev.safetensors\nā”‚ ā”œā”€ā”€ šŸ“‚ loras/\nā”‚ ā”‚ ā””ā”€ā”€ ltx-2.3-22b-distilled-lora-384.safetensors\nā”‚ ā””ā”€ā”€ šŸ“‚ text_encoders/\nā”‚ ā”œā”€ā”€ gemma_3_12B_it_fp4_mixed.safetensors\nā”‚ ā””ā”€ā”€ ltx-2-19b-embeddings_connector_dev_bf16.safetensors\n```\n\n## Report other issues\n\nNote: please update ComfyUI first ([guide](https://docs.comfy.org/installation/update_comfyui)) and prepare required models. Desktop/Cloud will be update after the stable builds; nightly-supported models may not be included yet, please wait for the update.\n\n- Cannot run / runtime errors: [ComfyUI/issues](https://github.com/comfyanonymous/ComfyUI/issues)\n- UI / frontend issues: [ComfyUI_frontend/issues](https://github.com/Comfy-Org/ComfyUI_frontend/issues)\n- Workflow issues: [workflow_templates/issues](https://github.com/Comfy-Org/workflow_templates/issues)" ], "color": "#223", "bgcolor": "#335" }, { "id": 375, "type": "LoadImage", "pos": [ -284.79655072864193, 2980.3264219099424 ], "size": [ 560.15625, 592.5 ], "flags": {}, "order": 1, "mode": 0, "inputs": [], "outputs": [ { "name": "IMAGE", "type": "IMAGE", "links": [ 792 ] }, { "name": "MASK", "type": "MASK", "links": null } ], "title": "LAST FRAME (END)", "properties": { "cnr_id": "comfy-core", "ver": "0.16.3", "Node name for S&R": "LoadImage", "enableTabs": false, "tabWidth": 65, "tabXOffset": 10, "hasSecondTab": false, "secondTabText": "Send Back", "secondTabOffset": 80, "secondTabWidth": 65 }, "widgets_values": [ "fox1.jpg", "image" ], "color": "#323", "bgcolor": "#535" }, { "id": 301, "type": "PreviewAny", "pos": [ 1217.8648716002594, 2859.7495530204405 ], "size": [ 568.703125, 736.125 ], "flags": {}, "order": 8, "mode": 0, "inputs": [ { "name": "source", "type": "*", "link": 662 } ], "outputs": [], "title": "PROMPT AUTO PREVIEW", "properties": { "cnr_id": "comfy-core", "ver": "0.16.4", "Node name for S&R": "PreviewAny" }, "widgets_values": [ null, null, null ], "color": "#2a363b", "bgcolor": "#3f5159" }, { "id": 423, "type": "IAMCCS_LTX2_LoRAStack", "pos": [ -289.4586451956726, 4229.854257871113 ], "size": [ 582.8125, 271.515625 ], "flags": {}, "order": 2, "mode": 0, "inputs": [ { "name": "lora", "shape": 7, "type": "LORA", "link": null } ], "outputs": [ { "name": "LORA", "type": "LORA", "links": [ 869 ] } ], "properties": { "aux_id": "IAMCCS/IAMCCS-nodes", "ver": "4dd640ca6b8564976a8cb62be59a50d83677cdd6", "Node name for S&R": "IAMCCS_LTX2_LoRAStack" }, "widgets_values": [ "no", 0, "no", 0, "no", 0 ], "shape": 1 }, { "id": 296, "type": "MarkdownNote", "pos": [ -1372.975749370472, 3659.4170664247454 ], "size": [ 917.921875, 1293 ], "flags": { "collapsed": false }, "order": 3, "mode": 0, "inputs": [], "outputs": [], "title": "SETTINGS", "properties": {}, "widgets_values": [ "## NOTICE BEFORE USE: In order for the workflow to operate properly, you must load 2 images and an audio file. These will not be used until you select one of the options below anyway.\n\n### t2v_mode = Run in Text to Video mode\n### enable_custom_audio = Load custom audio for the clip\n### enhance_prompt = AI prompt automatic enhancement\n### enable_last_frame = Use start and end frame\n\n### fps = Use range from 24 - 48 frames per second\n### seconds = Define video duration in seconds\n### single_pass = Use single run without upscaler.\n### native_resolution = Render at native resolution instead of half resolution which is LTX default mode. This significantly increases demand and resources, so use with caution!\n### nvidia_super_upscale = Will upscale output resolution x2 at the final video save output.\n### model_strength = Distillation strength. 0.5 is the default and recommended. Increase from 0.5 - 1.0 to force more output from the model.\n\n### Recommended steps:\n- Workflow is locked to 8 steps as per default in distilled mode.\n\n### Recommended resolutions:\n- 1280 x 704, 1920 x 1088 in default mode\n- 960 x 544 in single pass with native_resolution turned ON.\n\n## This workflow requires Comfy version 0.17 (or newer) to work properly.\n\n### Width & height settings must be divisible by 32 + 1. \n### Frame count must be divisible by 8 + 1, but this is now automatically handled by the workflow. Simply input video length in seconds and fps.\n\n### Running with invalid parameters **will not cause errors**. Instead, the flow will silently choose the closest valid parameters. \n\n### By default, we are using 720p resolution. You can try 1920*1088 if you have a powerful GPU.\n" ], "color": "#223", "bgcolor": "#335" }, { "id": 403, "type": "LoadAudio", "pos": [ -299.50150294576326, 3873.217862703965 ], "size": [ 591.984375, 203.28125 ], "flags": {}, "order": 4, "mode": 0, "inputs": [], "outputs": [ { "name": "AUDIO", "type": "AUDIO", "links": [ 833 ] } ], "title": "LOAD AUDIO", "properties": { "cnr_id": "comfy-core", "ver": "0.17.0", "Node name for S&R": "LoadAudio" }, "widgets_values": [ "A2V.m4a", null, null ] }, { "id": 273, "type": "SaveVideo", "pos": [ 1870.1692428089364, 2851.0719477970338 ], "size": [ 696.671875, 1423.4375 ], "flags": {}, "order": 7, "mode": 0, "inputs": [ { "name": "video", "type": "VIDEO", "link": 610 } ], "outputs": [], "properties": { "cnr_id": "comfy-core", "ver": "0.16.3", "Node name for S&R": "SaveVideo", "enableTabs": false, "tabWidth": 65, "tabXOffset": 10, "hasSecondTab": false, "secondTabText": "Send Back", "secondTabOffset": 80, "secondTabWidth": 65 }, "widgets_values": [ 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"enhance_prompt", "name": "value_7", "type": "BOOLEAN", "widget": { "name": "value_7" }, "link": null }, { "label": "single_pass", "name": "value_8", "type": "BOOLEAN", "widget": { "name": "value_8" }, "link": null }, { "label": "Last Frame", "name": "on_true", "type": "*", "link": 792 }, { "label": "enable_last_frame", "name": "value_9", "type": "BOOLEAN", "widget": { "name": "value_9" }, "link": null }, { "label": "fps", "name": "value_10", "type": "INT", "widget": { "name": "value_10" }, "link": null }, { "label": "seconds", "name": "value_11", "type": "INT", "widget": { "name": "value_11" }, "link": null }, { "name": "audio", "type": "AUDIO", "link": 833 }, { "label": "audio_start", "name": "start_index", "type": "FLOAT", "widget": { "name": "start_index" }, "link": null }, { "label": "enable_custom_audio", "name": "value_4", "type": "BOOLEAN", "widget": { "name": "value_4" }, "link": null }, { "label": "nvidia_super_upscale", "name": "value_5", "type": "BOOLEAN", "widget": { 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