常见 问题解答

SayItVid 对所有人完全免费。未登录访客每天可免费搜索 10 次视频发音。注册免费账号即可解锁每日 50 次搜索、个性化单词收藏夹、发音跟读练习历史以及开发者 API 密钥。

当然可以！您可以搜索单个单词、复合词、多词习语（如 "at the end of the day"、"bite the bullet"）以及地道表达。搜索引擎会自动定位完整短语被连续说出的视频时间戳。

Our video database incorporates speakers with diverse accents from around the world, including General American, British (Received Pronunciation, London, Northern), Australian, Canadian, Irish, Scottish, and international English. This diversity helps you understand native speech across international contexts.

Yes! The interactive video player includes speed controls (such as 0.75x and 0.5x speed) so you can listen carefully to fast or subtle phonemes, as well as a one-click replay button to loop the exact timestamp until you have mastered the pronunciation.

Yes. When the video player is active, you can use convenient keyboard navigation: press Space to play/pause, Left Arrow / Right Arrow to seek backward or forward, and quick navigation buttons to skip to the next or previous video hit.

Every video segment is indexed using high-resolution, time-aligned subtitle transcripts. Our indexing pipeline pinpoints the exact start and end timestamps down to the fraction of a second, with the searched word prominently highlighted in the synchronized caption box below the video.

SayItVid is an ideal resource for English educators and language learners. Teachers use it in class to demonstrate authentic speech, vowel reductions, and contextual vocabulary. Students preparing for IELTS Speaking, TOEFL, Cambridge exams, or public presentations use it for shadow speaking, accent training, and learning colloquial usage in natural contexts.

Our search index contains over 450,000 real video clips sourced from educational lectures, interviews, science documentaries, tech presentations, and conversations. We continuously expand the index with high-quality English channels covering academic, business, and everyday vocabulary.

SayItVid operates in strict compliance with the YouTube API Terms of Service, European GDPR, and international copyright principles. We do not download, store, or re-host any copyrighted video or audio files on our servers. All videos stream directly from YouTube through official, privacy-respecting embedded player APIs (youtube-nocookie.com), preserving creator views and metrics.

Yes, SayItVid is fully responsive and optimized for smartphones, tablets, laptops, and wide desktop displays. The layout adapts seamlessly with touch-friendly player controls, instant search, and dark mode support.

是的！SayItVid 提供完整的 MCP 服务器，支持 Claude Desktop、Cursor、Opencode 及各类 AI Agent，让大模型助手直接调用视频发音时间戳与音标数据。详情见 /mcp。

Word Playlists let you organize vocabulary into custom study decks (such as "IELTS Speaking", "Business English", or "Tricky Vowels"). Click the list icon or "Save Word" on any video player to add words to your collection. Playlists can be kept private for personal study or set to public with a shareable link at /list/[slug] to share with classmates or students.

影子跟读是一种极具成效的外语口语训练法，即在听到母语者发音的同时紧随其后大声模仿。SayItVid 提供即时跟读工作室，利用麦克风录入您的声音，通过端侧 AI 实时评估 0–100% 准确度，并以高亮色彩呈现逐词发音质量。

绝不会。您的隐私受到严格保护。语音识别与发音打分完全在您的浏览器本地利用 Web Audio API 完成，音频数据绝不会上传或存储在任何外部服务器上。

我们的在线音节计数工具（/syllable-counter）能实时分析文本，拆解音节并标注主次重音，计算 Flesch 易读度指数，并自动检验日本俳句的 5-7-5 音节格律。

借助发音对比工具（/compare），您可以将极易混淆的词汇（如 "accept 与 except"）或最小对立词（如 "ship 与 sheep"）并排对比，结合双视频同步回放与 IPA 国际音标强化听辨能力。

Accent Battles (/accents) let you explore how words differ across English dialects, specifically American (US), British (UK), and Australian (AUS) English. You can watch authentic native speakers from each region pronouncing the same word side-by-side and participate in live community voting polls to vote on the pronunciation you prefer or use most.

Yes! SayItVid supports responsive embeddable widgets. You can generate an <iframe> embed code for any public word playlist or search result by clicking "Embed" in your saved lists (/saved) or via /embed/[slug]. The embed is mobile-responsive, respects dark and light themes, and integrates smoothly into WordPress, Ghost, Webflow, Notion, Canvas, and Moodle.

是的，SayItVid 提供了基于 Manifest V3 的官方 Chrome 扩展。安装后，您可以在任意网页划词，一键查看 IPA 音标、音节划分、三口音音频与 YouTube 视频片段。

是的。开发者可以通过我们的公开 REST API（/api/v1）将视频发音、时间戳字幕和音标数据集成到自己的应用中。详细 Swagger 接口文档请参阅 /api-docs。