Burn Subtitles into Video
Burn SRT or VTT subtitles into video in-browser with style controls and no upload.
Processed locally in your browser.
How to use
- Select a local video file and add subtitle content from SRT or VTT.
- Review the parsed cues and check file metadata before rendering.
- Adjust style options such as font size, colors, outline, and position.
- Click Burn subtitles and wait for local browser processing to finish.
- Download the rendered output video and run a final playback check.
Tool details
Burn Subtitles into Video lets you hardcode SRT or VTT captions into MP4 and WebM files directly in the browser. You load a local video, provide subtitle text or file input, configure style options, and run FFmpeg WebAssembly without sending media to a server. The tool supports font, outline, box opacity, subtitle position, and export quality controls for practical publishing workflows. This is useful for social clips, product demos, tutorials, and course lessons where captions must stay visible. Large files can consume significant CPU and memory, so shorter clips usually process faster and more reliably.
FAQ
Does this tool upload my video or subtitle file?
No. Processing happens in your browser with local FFmpeg WebAssembly.
Can I use both SRT and VTT subtitle formats?
Yes. You can paste or upload SRT or VTT content before rendering.
Why can conversion be slow on some devices?
Video encoding is CPU and memory intensive, especially for larger files and longer durations.
Can I control subtitle style before export?
Yes. You can tune font size, text color, outline, box opacity, and vertical position.