• TRANSCRIPTION
  • HARDCODED
  • READY-TO-POST
  • HUMAN REVIEW

How to burn subtitles into videos with your AI

Connect Sonix to your AI client to turn raw video into captioned content. Once connected, your agent handles the transcription and the hardcoding process.

Ask AI about this page

Short answer

How can I burn subtitles into videos using AI?

You give your AI a video file, and it uses Sonix to transcribe the speech and bake the text into the video frames. This results in a finished file with hardcoded captions ready for social media. You'll see the specific steps for uploading and processing below.

The end results

What you get

This is what happens after your agent finishes the task.

TRANSCRIPTION

Text-accurate captions

The AI converts your spoken audio into precise text. You get a transcript that matches your video timing.

HARDCODED

Burned-in subtitles

The subtitles are baked into the video pixels. This means they won't disappear or need a separate file to play.

READY-TO-POST

Social media ready

The final video file is complete. You can upload it directly to platforms without further editing.

HUMAN REVIEW

Manual polish needed

You still need to check the text for accuracy. The AI handles the heavy lifting, but you decide if the captions are perfect.

The workflow

What your AI does when the video arrives.

The AI moves through a sequence of transcription and rendering steps.

  1. Upload the footage

    Your agent sends your video file to the Sonix platform to begin the process.

    submit_media

  2. Retrieve the transcript

    The AI checks the status of your file and pulls the generated text once transcription finishes.

    get_media

  3. Burn the text

    The agent instructs the system to overlay the captions onto the video frames.

    create_video_burn_in

  4. Fetch the final file

    Once the rendering is done, your AI grabs the finished video with the subtitles included.

    get_video_burn_in

Try it

Copy these to start.

Use these prompts to trigger the Sonix workflow.

Starting points

These are basic requests to get the process moving. Replace the bracketed info with your actual file names or links.

Sonix Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_XmmnlZ78l7johjczj1fB73mmdv4AxcjPs7Pcfw3n/mcp

Claude Desktop

Follow the steps below to connect in seconds.

  1. 1In Claude Desktop, open Settings → Connectors.
  2. 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
  3. 3Click Add and start a new chat — Sonix capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "sonix-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_XmmnlZ78l7johjczj1fB73mmdv4AxcjPs7Pcfw3n/mcp"
    }
  }
}
Copy into chat04

  • Upload this video to Sonix: [link to video file]

  • Transcribe the video I just submitted and tell me when it's ready.

  • Burn subtitles into the video file I uploaded using the default style.

  • Check the status of my video burn-in task for [video name].

  • Claude
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Start here

Connect Sonix once, then ask.

You only need to link your Sonix account one time. Your credentials stay encrypted, and you can immediately start giving your AI video tasks.

Connect Sonix to your AI

FAQ

How this task behaves

  • 01

    Can the AI change the font style of the subtitles?

    No. The AI uses the burn-in tool to apply captions, but it cannot customize specific font families or colors through this MCP.

  • 02

    Will the AI delete my original video file?

    No. The tools only interact with the media for transcription and rendering; they do not have the capability to delete your files.

  • 03

    Does the AI handle the transcription itself?

    No. The AI uses the Sonix engine to perform the actual speech-to-text conversion.

  • 04

    Can I edit the text before it gets burned into the video?

    The AI can retrieve the transcript, but you must review and approve the text if you want to ensure perfect accuracy before the burn-in step.

  • 05

    Can the AI create separate .srt files?

    No. This specific workflow is designed to burn subtitles directly into the video footage.

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