FlashCaption - 任意直播或视频的实时字幕与翻译
MG Media LLC · Firefox
适用于任何直播或视频的实时AI字幕与翻译。通过屏幕上的即时字幕观看YouTube、Twitch等。
<all_urls>），意味着它可以读取你在任意站点的页面内容，包括已登录的页面。这是许多扩展正常工作的必要条件，但也值得你确认来源可信。
简介
Real-time captions and live translation for any video or livestream, right inside Firefox.
Ever watched a stream, a match, or a video in a language you don't speak and missed half of it? FlashCaption listens to whatever is playing in your tab and puts AI subtitles on screen as people speak, translated into the language you actually read. Whatever the language, you stay in sync.
Start with a 7-day free trial. Full access from minute one, and you can cancel any time before it ends. Turn it on and captions appear live. No setup, no uploads, no switching tabs.
WHERE IT WORKS
• YouTube, including live streams and Shorts
• Twitch and other live streaming sites
• Anime and drama sites, bilibili, and Korean streams on Naver Chzzk
• Foreign sports streams and news channels
• Webinars, online courses, and browser-based meetings
• Most other video players on the web
REAL-TIME CAPTIONS AND TRANSLATION
• Live captions generated as people speak, not uploaded files or pre-made subtitle tracks
• Those subtitles translated instantly into your preferred language, including Korean, Japanese, Chinese, Spanish, Russian, and Portuguese
• Follow foreign streamers, anime, K-content, and international sport, and catch every word
• Keep up with fast speech and multilingual chat without pausing or rewinding
FAST, PRIVATE, AND BUILT FOR LIVE
• Low-latency captions that keep pace with live audio
• Privacy-first: your audio is processed live and never stored
• Runs in the browser, no desktop app and no complicated setup
• Nothing to upload and no files to convert
FLEXIBLE AND CUSTOMIZABLE
• Overlay subtitles directly on any video
• Adjust font size, color, and position
• Switch languages at any time
• One-click toggle on or off
SIMPLE PLANS, 7 DAYS FREE
• Try any plan free for 7 days, secure checkout by Stripe
• Weekly from $1.99, monthly and yearly available
• Cancel any time before the trial ends
WHO IT IS FOR
Stream watchers who follow creators in another language, anime and K-drama fans, language learners, sports fans on foreign feeds, students in online lectures, and anyone sitting in a meeting or webinar that is not in their first language.
Home: https://flashcaption.com
Questions or feedback: https://flashcaption.com/contact
FlashCaption - 任意直播或视频的实时字幕与翻译 是做什么的
FlashCaption - 任意直播或视频的实时字幕与翻译 是一款面向 Firefox 的语言辅助类扩展，主要用来划词翻译、语法校对、词典查询。官方对它的介绍是：适用于任何直播或视频的实时AI字幕与翻译。通过屏幕上的即时字幕观看YouTube、Twitch等。在Firefox 附加组件商店（AMO）上，它当前版本 1.26.1，约 114 名用户。
适合什么人用
从功能定位看，FlashCaption - 任意直播或视频的实时字幕与翻译 更适合需要阅读外文资料或写英文内容的用户。如果你平时只是偶尔遇到相关需求，用浏览器自带功能也能凑合；但如果这件事每天都发生，装一个专门处理它的扩展通常比手动操作省事得多。需要注意的是它作用于所有网站，装上后建议先观察一两天，确认不影响常用站点的正常使用。
怎么安装 FlashCaption - 任意直播或视频的实时字幕与翻译
- 打开Firefox 附加组件商店（AMO）上的官方页面；
- 点「添加到浏览器」并确认权限提示；
- 装好后在扩展列表里固定图标，方便随时开关。
本站只做索引与介绍，安装包来自官方商店。如果商店页面提示当前地区不可用，说明该扩展未在你所在区域上架。
常见问题
FlashCaption - 任意直播或视频的实时字幕与翻译 是免费的吗？
FlashCaption - 任意直播或视频的实时字幕与翻译 在Firefox 附加组件商店（AMO）免费提供下载。它是浏览器扩展，装上就能直接用，不需要注册账号。
FlashCaption - 任意直播或视频的实时字幕与翻译 安全吗？
它只申请了 0 项权限，范围比较克制，没有申请「读取所有网站数据」这种大权限。
FlashCaption - 任意直播或视频的实时字幕与翻译 支持哪些浏览器？
当前收录的版本来自Firefox 附加组件商店（AMO），适用于 Firefox。同一个扩展在其他商店可能有对应版本，但功能与版本号不一定相同。
怎么卸载 FlashCaption - 任意直播或视频的实时字幕与翻译？
在扩展管理页找到 FlashCaption - 任意直播或视频的实时字幕与翻译，点移除即可。它在本地保存的设置会一起清掉，不会残留数据。
权限清单 来自 manifest.json 原文
站点访问 1
<all_urls>
接口权限 2
activeTabstorage