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Caption rendering

Subtitles Burner

Permanently render SRT captions onto a video stream.

  • Free to use
  • No account
  • Browser processing
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Purpose-built workflow

Burn SRT captions permanently into video

  • SRT input
  • Permanent captions
  • Playback preview
  1. InputChoose a local video
  2. RefineChoose video and subtitle files
  3. ReviewPlay the captioned result
  4. FinishDownload the subtitled MP4

Caption rendering

What does Subtitles Burner do?

Burned-in captions display on every player and platform without needing a separate subtitle file. This tool renders SRT captions permanently onto the video.

Rendering runs locally with a WebAssembly engine, so both the video and captions stay on your device.

Permanently render SRT captions onto video.
Make captions visible on any player or platform.
Process video locally without uploading it.

Common use cases

Adding captions for social video
Ensuring subtitles show everywhere
Creating accessible shareable clips

Step-by-step

How to use this tool

  1. 1

    Add content to Subtitles Burner

    Choose a supported video from your device.

  2. 2

    Configure the result

    Set the conversion or editing controls for the result.

  3. 3

    Review and export

    Run the local process, review the output, and download it.

Tips for a better result

  • Start with a representative sample before running a large subtitles burner workflow.
  • Keep the original input until you have checked the downloaded or copied result.
  • Review quality, compatibility, and output size before publishing or sharing the result.

Keep working

Related workflows

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Learn from primary sources

Trusted references

Use these standards and official guides when you need deeper technical detail.

FFmpeg formats documentation (opens in a new tab)The official reference for supported media containers and formats.Web media format guide (opens in a new tab)MDN guidance for browser audio and video compatibility.

FAQ

Common questions

Everything you need to know before processing your files.

Standard SRT subtitle files are supported and rendered onto the video frames.

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