Add Text to Video
Burn custom titles or captions onto a video at a chosen time — in your browser.
选择音频或视频文件
MP3、WAV、M4A、MP4、MOV、WebM —— 用 Whisper 在浏览器中转写
点击选择，或将文件拖到此处
如何 Add Text to Video
- 1
Add your video
Drop in an MP4, MOV or WebM — it's read in your browser, never uploaded.
- 2
Add your text
Type a line, set when it appears and disappears, and pick a position. Add as many lines as you need.
- 3
Burn in and download
Click Add text; the video is re-encoded with your text burned into the picture.
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Add Text to Video — 常见问题
Is my video uploaded?+
No. The text is burned into the video entirely in your browser.
How is this different from Add Captions to Video?+
That tool auto-transcribes speech with Whisper and times captions to what's said. This one is for text you type yourself — a title, a call-to-action — shown for whatever time range you choose.
Can I add more than one line of text?+
Yes — add as many lines as you need, each with its own start time, end time and position.
Which browsers work?+
Chrome, Edge and Safari 17+ — the burn-in step needs WebCodecs.
你们会把我的文件上传到服务器吗？+
不会——这里的每个工具都完全在你的设备上处理文件，不会向服务器上传任何内容。唯一的例外是 AI 工具，它们会把提取的文本（而非文件本身）发送给 Claude 来完成工作。
有文件大小限制吗？+
我们没有人为设置限制，但由于处理过程在你的浏览器中进行，非常大的文件（超过 500MB 或 1000 页）会受到你设备内存的限制，而非我们的限制。
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