Murmur - YouTube Bilingual Subtitles, AI Summary & Shadowing

Coherent bilingual subtitles, AI video summary, pronunciation shadowing, instant word lookup & vocabulary — learn while you watch.

Murmur turns the YouTube videos you already watch into bilingual study material. Murmur 把你已经在看的 YouTube 视频，变成双语学习材料。 ★ COHERENT BILINGUAL SUBTITLES / 连贯双语字幕 YouTube's auto-captions are fragmented — Murmur restructures them into complete sentences before translating, so every line has real context. Original and translation appear side by side. YouTube 自动字幕是碎片化的 — Murmur 先将其重组为完整句子再翻译，原文与译文并排显示。 ★ INSTANT WORD LOOKUP / 即时查词 Click any word in the subtitles for an instant definition, synonyms, and word forms. 点击字幕中任意单词，即刻查看释义、同义词和词形变化。 ★ AI VIDEO SUMMARY & CHAPTERS / AI 视频总结与章节 Get a full summary and smart chapter markers for any video — know what a 90-minute lecture covers in seconds. 获取完整视频摘要和智能章节标记 — 秒懂一节 90 分钟课程的内容。 ★ READING & SPEAKING PRACTICE / 阅读与口语练习 Immersive sentence-by-sentence reading mode, plus pronunciation feedback down to the phoneme. 沉浸式逐句阅读模式，外加精确到音素的发音反馈。 ★ VOCABULARY COLLECTION / 生词本 Save unfamiliar words with one click. Murmur also surfaces the words most worth learning from each video. 一键保存生词。Murmur 还会自动筛选每个视频中最值得学习的词汇。 ★ FLOATING SUBTITLE WINDOW / 悬浮字幕窗口 Pop subtitles out into a compact floating window — keep learning while you browse other tabs. 将字幕弹出为迷你悬浮窗 — 切换标签页也能继续学习。 Works on all YouTube videos with captions. Currently supports English learning for Chinese speakers (more language pairs coming soon). 适用于所有带字幕的 YouTube 视频。目前支持中文母语者学英语（更多语言对即将推出）。 Free to use — no account required for subtitles and word lookup. 免费使用 — 双语字幕和查词无需登录。