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From LLM to Agent + Skill: The Architectural Evolution of Subtitle Translation Tool BaoCut

From LLM to Agent + Skill: The Architectural Evolution of Subtitle Translation Tool BaoCut

@dotey

这个 App 最开始是自己用的，是走的 LLM 方案，先整体翻译，然后按句子配对，再 LLM 拆分，但是拆分效果总是不理想。

另外走 LLM 还有一个问题，就是要配置 API Key，这其实对普通人不友好，另外就是成本其实不低，Gemini 3.5 Flash 一部长一点视频都几美元。

最后发现还是 Agent + Skill 路线最好：

• Agent 有很好的纠错能力，哪怕你不给它这样的工具，它自己都能一边翻译一边纠错，质量不错。

• 把 App 的能力封装成 cli，让 Agent 可以通过命令行调用 App 的功能

• 配合一个 Skill 把常用的工作流比如像转录、润色、翻译、对齐、剪辑都固化下来，这样 Agent 就知道最佳实践是什么，不需要每次都自己摸索

• App 解决的是人工预览、校对的部分。

• Agent 相对比较通用和便宜，现在大家都有 Agent，包月的 Token 经常花不完，用来干这种活正合适 Show More

#### 宝玉

@dotey · 13h ago

字幕转录翻译剪辑 Skill —— BaoCut（仅支持 Mac）

借助 Agent Skill，可以转录视频、对转录结果识别 Speaker、润色（纠正错别字口癖等）、也可以根据转录结果对视频进行简单的剪辑，比如删除口癖、重复等。

这次尝试解决一个问题就是 Agent 对字幕转录翻译后，无法通过一个友好的操作界面二次编辑的问题。

现在的做法是为 Agent 提供一个 cli，配合 Skill 的说明，Agent 可以借助 cli 去转录，获取转录结果润色、翻译，并实时同步进度到 GUI。后续可以在 GUI 进行预览和人工编辑。

安装了 Skill 和 App 后，后续只要从 Codex 或者 Claude Code 这种 Agent，触发 Skill 即可执行，比如：

> /baocut 转录并翻译视频：<视频 url 或路径>

已知问题：

• 仅支持 Mac

• 翻译速度略慢，但质量会不错

Skill 从 App 内可以安装，或者 Skill 地址：github.com/jimliu/baocutShow More

!Image 4: Tweet image

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Jul 15, 2026, 2:53 AM View on X

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One Sentence Summary

Baoyu shares practical experience transitioning the subtitle translation tool BaoCut from a pure LLM approach to an Agent + Skill architecture, solving issues of cost, usability, and editing efficiency.

Summary

Baoyu details the technical iteration process of his subtitle translation and editing tool, BaoCut. The initial pure LLM approach suffered from unsatisfactory sentence splitting, the need for API Key configuration which was unfriendly to ordinary users, and high costs (Gemini 3.5 Flash costing several dollars for a longer video). The final solution pivoted to an Agent + Skill route, leveraging the Agent's error-correction capabilities, encapsulating the App's functions into a CLI for the Agent to invoke, and solidifying best-practice workflows like transcription, polishing, translation, and alignment through a Skill. A graphical interface is retained for manual preview and secondary editing, solving the pain point of low editing efficiency after pure Agent operation. This approach also utilizes idle tokens from users' monthly Agent subscriptions, resulting in lower costs.

AI Screening

86

Influence Score 19

Published Today

Language

Chinese

Tags

AI Agent

AI Application Development

Subtitle Translation

LLM Cost Optimization

BaoCut

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