LTX2.5-Dev-Workflow / LTX2.5_dev-Wf-experimental.json
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"## Save video\n\nThis is you output preview 🎉🥳"
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"## Inputs\n\nEverything here is optional.\n\n### Prompt\n\nEnter a positive prompt. To rewrite it into a fuller description first, enable\n**enhance positive prompt** on the Input Parameters node below. The negative\nprompt is used as written and is never enhanced.\n\nSupplying an **LTX API key** encodes and enhances the prompt through the API\ninstead of locally, which saves memory. The workflow switches over on its own\nwhenever a key is present - there is nothing to un-bypass.\n\nSee the [prompting guide](https://docs.ltx.io/open-source-model/usage-guides/prompting-guide).\n\n### Image input\n\nCondition the video to open on a still by loading an image and enabling\n**use image input** on the Input Parameters node.\n\n### Frame rate and duration\n\nSet both below. The frame count has to be 1 + a multiple of 8, so the duration\nactually used is worked out from the fps and the duration you ask for, and may\ncome out slightly different."
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"## Preprocess\n\n**Video dimensions**\n\nadjust video width and video height to determine the output dimensions.\n\n\n**Image conditioning**\n\nAdjust img_strength and img_compression to change the strength of the input image in case you provided one. "
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"## Generate\n\n**Sampler - Distilled (8 steps)**\n\nThis takes the distilled ltx-2.5 model and runs the diffusion in 8 steps. You can change the noise seed, the guider cfg (used for both video and audio) and select the sampler. "
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"## Decode\n\nMake sure to adjust the number of tiles and overlap to fit your hardware.\n(fewer tiles will result in faster execution, but will require more memory).\n\n### Recommended settings\n\n| node settings (pixels) | resolved latent geometry |\n| ------------------------------------------ | ------------------------------- |\n| `512 / 64 / 128 / 32` | 16×16, ov 2 | 16f, ov 4 |\n| `768 / 192 / 128 / 32` | 24×24, ov 6 | 16f, ov 4 |\n| `1024 / 256 / 128 / 48` | 32×32, ov 8 | 16f, ov 6 |\n| `1536 / 384 / 192 / 48` | 48×48, ov 12 | 24f, ov 6 |\n| `768 / 192 / spatial-only` | 24×24, ov 6 | no temporal split |"
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"## Model Links\n\n**LTX-2.5 Model Weights**\n\nMake sure to click the \"Agree and Access\" button the first time you download.\n\n- [ Distilled model - ltx-2.5-22b-distilled-transformer-bf16.safetensors ](https://huggingface.co/Lightricks/LTX-2.5/blob/main/diffusion_models/ltx-2.5-22b-distilled-transformer-bf16.safetensors)\n\n- [ Audio VAE - ltx-2.5-audio-vae-bf16.safetensors ](https://huggingface.co/Lightricks/LTX-2.5/blob/main/vae/ltx-2.5-audio-vae-bf16.safetensors)\n\n- Video VAE - one of these:\n - [ Diffusion decoder ltx-2.5-video-vae-bf16.safetensors ](https://huggingface.co/Lightricks/LTX-2.5/blob/main/vae/ltx-2.5-video-vae-bf16.safetensors) - Best quality\n - [ Convolutional decoder - ltx-2.5-video-vae-conv-bf16.safetensors ](https://huggingface.co/Lightricks/LTX-2.5/blob/main/vae/ltx-2.5-video-vae-conv-bf16.safetensors) - Lower memory & faster\n\n\n**Text Encoder - finetuned for LTX-2.5**\n- [gemma4-12b-with-proj-ltx-2.5-bf16.safetensors](https://huggingface.co/Lightricks/LTX-2.5/blob/main/text_encoders/gemma4-12b-with-proj-ltx-2.5-bf16.safetensors)\n\n**Text Enhancer**\n- [Google Gemma 4 E2B IT](https://huggingface.co/Comfy-Org/gemma-4/blob/main/text_encoders/gemma4_e2b_it_bf16.safetensors)\n\n\n**Model Storage Location**\n\n```\n📂 ComfyUI/\n├── 📂 models/\n│ ├── 📂 text_encoders/\n│ │ ├── gemma4-12b-with-proj-ltx-2.5-bf16.safetensors\n│ │ └── gemma4_e2b_it_bf16.safetensors\n│ ├── 📂 diffusion_models/\n│ │ └── ltx-2.5-22b-distilled-transformer-bf16.safetensors\n│ ├── 📂 vae/\n│ │ └── ltx-2.5-audio-vae-bf16.safetensors\n│ │ └── ltx-2.5-video-vae-conv-bf16.safetensors / ltx-2.5-video-vae-bf16.safetensors\n```\n\n## Report Issues\nTo report any issues when running this workflow, [go to GitHub](https://github.com/Lightricks/ComfyUI-LTXVideo/issues)\n"
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