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ComfyUI: Integrate independent video upscale workflow

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Demo summary

The demo shows how to replace the standard LTX resampling block with a dedicated video upscale workflow for cleaner high-resolution results.

Step-by-step

  1. Decode the latent at the end of stage three to generate the video.
  2. Save the low-resolution output from stage three.
  3. Delete the entire stage four workflow block.
  4. Import and place the provided upscale workflow into stage four.
  5. Connect the start and end points between the stages.
  6. Save the final high-resolution output.

Watch out for

  • You must decode the latent and save the low-resolution video before moving to the upscale stage.

Highlights

“The pure quality this pumps”

All demos from “Your LTX 2.3 ComfyUI Workflow Is Probably Wrong… Fix It Like This”

  1. 2:590:13Search and load LTX 2.3 templates in ComfyUIThe creator demonstrates how to use the template search feature in ComfyUI to find and load the LTX 2.3 image-to-video workflow.ComfyUIImage to Video
  2. 3:411:25Configure LTX 2.3 foundational parametersA walkthrough of setting dimensions, frame counts, and loading core models including the LTX 2.3 distill model and audio VAE within a ComfyUI workflow.ComfyUIAI Animation Generator
  3. 5:060:37Process visual and audio inputs in ComfyUIThe demo shows how to use the LTX V image-to-video condition node and empty latent audio node to prepare data for the generation engine.ComfyUIAI Animation Generator
  4. 5:431:03Generate synced AV with LTX V concat nodeThe creator demonstrates using the LTX V concat AV latent node to bind video and audio together before sampling to ensure perfect synchronization.ComfyUIAI Video Generator
  5. 10:250:53Optimize step count and sigma coefficientsThe creator demonstrates adjusting the configuration to 12 steps and tuning sigma coefficients in ComfyUI to improve character consistency.ComfyUIAI Image Generator
  6. 12:200:26Integrate independent video upscale workflowCurrentThe demo shows how to replace the standard LTX resampling block with a dedicated video upscale workflow for cleaner high-resolution results.ComfyUIAI Video Upscaler
  7. Watch “Your LTX 2.3 ComfyUI Workflow Is Probably Wrong… Fix It Like This” →

AI Video Upscaler

  1. 22:461:42Upscaling video to 1080p in ComfyUIThe creator demonstrates how to activate and configure the 1080p super-resolution upscaler nodes within the ComfyUI workflow.AI Search
  2. 14:470:20Upscale video with RTX Super ResolutionThe demonstration shows using the RTX Super Resolution node to increase a 25fps 1080p clip to a 50fps 4K output.Tensor Alchemist
  3. 37:281:08Upscale video with Seed-V2The user demonstrates upscaling a low-resolution AI-generated video to Full HD using the Seed-V2 workflow in ComfyUI for improved sharpness.pixaroma
  4. 18:560:49Side-by-side video quality comparisonThe creator uses an 'Ultimate Video Upscaler' tool to perform a side-by-side comparison between the 480p and 720p generated outputs.SECourses
  5. 12:200:26Integrate independent video upscale workflowCurrentThe demo shows how to replace the standard LTX resampling block with a dedicated video upscale workflow for cleaner high-resolution results.SOTAI
  6. 7:542:071080P Latent Upscaling with Hunyuan SR ModelThe video shows how to use the Hunyuan Video Latent Upscale node and the SR (Super Resolution) model to enhance a 720p video to 1080p using a dual-sampler noise injection technique.AI老腊肉
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