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工作流 / 视频工具 / 视频放大：RelayVSR 4x
视频放大：RelayVSR 4x

视频放大：RelayVSR 4x

Video Upscale: RelayVSR 4x

用 RelayVSR 把实拍素材放大 4 倍：大模型只为稀疏关键帧写参考潜变量，紧凑的 Flash 解码器把这些参考带到每一帧，整段视频一次流式完成、只需一步采样。输出正好是输入的 4 倍，帧率与音轨保持不变，适合作为 480p-768p 生成之后的收尾放大，也适合翻新旧素材。

视频工具 7 个节点 1 个输入 ComfyUI ≥ 0.45.0 ComfyUI 34 KB

下载工作流 JSON 查看官方来源

下载后把文件拖进 ComfyUI 窗口即可打开。

需要的权重

这个工作流引用了 2 个权重文件，其中 2 个能在本站模型库里找到。

relayvsr_flash_vae_x4_fp32.safetensors 在模型库查看
relayvsr_x4_int8_convrot.safetensors 在模型库查看

节点构成

MarkdownNote × 3
LoadVideo × 1
SaveVideo × 1
655021b4-71af-43ca-91cd-267bb1bd9167 × 1
Video Slice × 1

官方标注的模型

RelayVSR

工作流 JSON

和上面「下载工作流 JSON」是同一份文件。

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199 "Guide: [Subgraph](https://docs.comfy.org/interface/features/subgraph)\n\n## Input Asset\n\n- [cyber_samurai_chainsaw_lunge_video.mp4](https://raw.githubusercontent.com/Comfy-Org/workflow_templates/refs/heads/main/input/cyber_samurai_chainsaw_lunge_video.mp4)\n\n## Model Links\n\n- [Hugging Face:Comfy-Org/RelayVSR](https://huggingface.co/Comfy-Org/RelayVSR)\n\n**ModelScope mirrors** (alternative repo location)\n\n- [ModelScope:Comfy-Org/RelayVSR](https://modelscope.cn/models/Comfy-Org/RelayVSR)\n\n**diffusion_models**\n\n- [relayvsr_x4_int8_convrot.safetensors](https://huggingface.co/Comfy-Org/RelayVSR/resolve/main/diffusion_models/relayvsr_x4_int8_convrot.safetensors) (4.81 GB)\n\n**vae**\n\n- [relayvsr_flash_vae_x4_fp32.safetensors](https://huggingface.co/Comfy-Org/RelayVSR/resolve/main/vae/relayvsr_flash_vae_x4_fp32.safetensors) (121.8 MB)\n\n\n## Model Storage Location\n\n```\n📂 ComfyUI/\n├── 📂 models/\n│ ├── 📂 diffusion_models/\n│ │ └── relayvsr_x4_int8_convrot.safetensors\n│ └── 📂 vae/\n│ └── relayvsr_flash_vae_x4_fp32.safetensors\n```\n\n## About this model\n\nRelayVSR upscales real video in one step: a large Wan-based model paints reference latents for sparse keyframes and a light \"Flash\" decoder carries them across every frame, so a long clip is restored in a streaming pass. The 4x pair here multiplies each side of the frame by four, so a 576x736 clip comes out at 2304x2944; native in ComfyUI since #17511.\n\n## Report Issue\n\nNote: Please update ComfyUI first ([guide](https://docs.comfy.org/installation/update_comfyui)) and prepare required models. Desktop/Cloud updates follow stable releases, so some nightly-supported models may not be available yet.\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)\n"
200 ],
201 "widgets_values_named": {
202 "text": "Guide: [Subgraph](https://docs.comfy.org/interface/features/subgraph)\n\n## Input Asset\n\n- [cyber_samurai_chainsaw_lunge_video.mp4](https://raw.githubusercontent.com/Comfy-Org/workflow_templates/refs/heads/main/input/cyber_samurai_chainsaw_lunge_video.mp4)\n\n## Model Links\n\n- [Hugging Face:Comfy-Org/RelayVSR](https://huggingface.co/Comfy-Org/RelayVSR)\n\n**ModelScope mirrors** (alternative repo location)\n\n- [ModelScope:Comfy-Org/RelayVSR](https://modelscope.cn/models/Comfy-Org/RelayVSR)\n\n**diffusion_models**\n\n- [relayvsr_x4_int8_convrot.safetensors](https://huggingface.co/Comfy-Org/RelayVSR/resolve/main/diffusion_models/relayvsr_x4_int8_convrot.safetensors) (4.81 GB)\n\n**vae**\n\n- [relayvsr_flash_vae_x4_fp32.safetensors](https://huggingface.co/Comfy-Org/RelayVSR/resolve/main/vae/relayvsr_flash_vae_x4_fp32.safetensors) (121.8 MB)\n\n\n## Model Storage Location\n\n```\n📂 ComfyUI/\n├── 📂 models/\n│ ├── 📂 diffusion_models/\n│ │ └── relayvsr_x4_int8_convrot.safetensors\n│ └── 📂 vae/\n│ └── relayvsr_flash_vae_x4_fp32.safetensors\n```\n\n## About this model\n\nRelayVSR upscales real video in one step: a large Wan-based model paints reference latents for sparse keyframes and a light \"Flash\" decoder carries them across every frame, so a long clip is restored in a streaming pass. The 4x pair here multiplies each side of the frame by four, so a 576x736 clip comes out at 2304x2944; native in ComfyUI since #17511.\n\n## Report Issue\n\nNote: Please update ComfyUI first ([guide](https://docs.comfy.org/installation/update_comfyui)) and prepare required models. Desktop/Cloud updates follow stable releases, so some nightly-supported models may not be available yet.\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)\n"
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