Extend MiniMax H3 videos with up to three continuation stages and combine everything into one final video with audio, all within a single ComfyUI workflow.Each stage uses the previous clip’s ending video and audio to guide the continuation. The workflow trims the guide overlap and joins the clips automatically, so there’s no need to move files between separate workflows. Each extension has its own prompt, duration, seed, and enable switch. Disabled stages are skipped without rendering.The graph includes labeled sections and instructions. Load your source video, replace “your prompt here,” set your extension durations, and enable the stages you want. Stages two and three are disabled by default. The duration setting controls how much new footage to add, rather than the total video length.The workflow supports multiple resolutions. The shared template defaults to 1152×640, approximately 0.7MP, but you can change the resolution settings inside each extension stage to match your source. Resizing is not automatic. Your source and all enabled stages must have matching dimensions and frame rates, with compatible audio sample rates and channel counts. The template is configured for constant 24fps footage.The template includes three extension stages, and additional stages can be added by duplicating an independent stage and connecting it into the video chain before the final save.

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