Upload the video to extend
Upload a short clip that ends on a continuable scene. The model uses the last few frames to infer camera position, color grade, depth of field, and motion velocity for the continuation.
视频工具
AI 视频延长器
用 AI 配合提示词延长视频时长，通过经过验证的编辑接口无缝续接片段，无需重拍即可增加时长。
预览video
Video Extender
Extend videos with prompt guidance through the verified video edit endpoint.
上传视频
MP4、MOV、WebM，最大 100MB
使用方式
如何使用 视频延长
Write a continuation prompt
Describe what should happen next — "the character walks toward the horizon as the sun sets" or "camera continues slow dolly right through the forest." An explicit prompt reduces scene drift from the original.
Generate and chain if needed
Submit the job. HappyHorse 1.0 or Seedance 2.0 generates 2–8 seconds of new footage matching the clip's style. Feed the output back through the extender iteratively to chain longer sequences.
为什么使用
为什么使用 AI Pin Maker 视频工具
按工作流组织
每个页面都把一个用户任务映射到所需视频输入和模型族。
模型匹配
使用当前线上模型列表中已验证的视频编辑端点。
可运行工具
可用工具会连接到 AI Pin Maker 视频生成工作台。
路线衔接
相关视频工具帮助从特效继续到编辑、音乐和生产流程。
常见问题
视频工具常见问题
- How many extra seconds does the video extender add?
- Most routes add 2–8 seconds of new footage per run. You can feed the output back through the extender iteratively to chain longer sequences beyond the initial extension.
- Does the extended footage match the original clip's visual style?
- Yes. The model conditions on the last few frames of the uploaded clip — using them to infer camera position, color grade, depth of field, and motion velocity before generating the continuation — so the transition reads as seamless.
- Can I extend an AI-generated video or only real footage?
- Both work. The extender is agnostic to whether the source was recorded with a camera or AI-generated — it conditions on visual content only, not on metadata about origin.
- What if the extension introduces visual inconsistencies?
- Refine the prompt to anchor specific details: "same forest lighting, no new characters, camera continues dolly right." A more explicit continuation prompt reduces scene drift and keeps the extension consistent with the original composition.
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