传统工作流直接使用Wan2.1_I2V_14b模型生成720p视频，存在耗时长的问题。本工作流采用分阶段采样策略优化视频生成效率，速度提升到2倍以上。第一步：使用Wan2.1_I2V_14b模型生成228p基础视频。第二步：通过Wan2.1_fun_1.3b模型进行放大，最终输出720p高清视频。附件中PNG图片隐藏了工作流信息。只要将它拖入Comfyui界面中即可。Original Workflow:The conventional workflow directly utilizing the Wan2.1_I2V_14b model for 720p video synthesis suffers from prolonged processing times.Optimized Workflow:This pipeline implements a two-stage sampling strategy to enhance video generation efficiency, reducing the total processing time by over 50%:Base Video Synthesis: The Wan2.1_I2V_14b model first generates a 228p foundational video sequence.Resolution Enhancement: The Wan2.1_fun_1.3b model then performs temporally consistent super-resolution upscaling to deliver 720p high-definition output.The workflow information is hidden in the PNG image attached. You just need to drag it into the ComfyUI interface.Wan2.1-I2V-14B-480P-gguf:<a target="_blank" rel="ugc" href="https://huggingface.co/city96/Wan2.1-I2V-14B-720P-gguf/tree/main">https://huggingface.co/city96/Wan2.1-I2V-14B-720P-gguf/tree/main</a>Wan2.1-Fun-1.3B-Control: <a target="_blank" rel="ugc" href="https://huggingface.co/alibaba-pai">https://huggingface.co/alibaba-pai</a>text_encoders+clip_vision+vae:<a target="_blank" rel="ugc" href="https://blog.comfy.org/p/wan21-video-model-native-support">https://blog.comfy.org/p/wan21-video-model-native-support</a>

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