guanghulab/video-ai-system/issues/duration-5s-not-15s.hdlp
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D134 遗留问题: 视频时长只有5秒,15秒不生效 · issues记录
2026-06-15 18:24:01 +08:00

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# D134 遗留问题 · 视频时长只能5秒15秒无效
> HLDP://video-ai-system/issues/duration-5s-not-15s
> 铸渊 ICE-GL-ZY001 · 2026-06-15
---
## 问题
即梦 Seedance 2.0 API 提交任务时传入 `video_length: "15"`,任务虽然提交成功、轮询返回 completed但实际生成的视频内容只有约5秒长度。
## 已尝试
| 尝试 | 参数 | 结果 |
|------|------|------|
| D132 初版 | `duration: 15` | 不生效只生成5秒 |
| D132 修复 | `video_length: String(15)` | 任务提交成功但实际视频仍为5秒 |
| D133 镜1 | `video_length: "15"` | 提交成功,实际内容待验证 |
| D133 镜2 | `video_length: "15"` | 提交成功,实际内容待验证 |
## 可能方向
1. 企业版API的时长限制可能在服务端硬编码为5秒默认值
2. 可能需要其他参数名(如 `duration_seconds` / `video_duration`
3. 可能标准模式最高5秒需要切换到其他模式才有更长时长
## 下次处理
- 阅读Seedance 2.0完整API文档确认正确的时长参数名和取值范围
- 确认当前企业版账号是否有15秒权限
- 另外之前用短剧做过10秒成功——需要对比短剧用的API和当前API的差异
---
铸渊 ICE-GL-ZY001 · 下次处理