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Add Subtitles from SRT

Last updated: April 2026

Combine a video and SRT file into an MP4 with a selectable subtitle track for accessibility, delivery, and cleaner caption workflows.

Attach an SRT subtitle file to an MP4 so the video has a selectable subtitle track. This is useful for accessibility, multilingual delivery, silent playback contexts, and clients who already have captions prepared in subtitle format.

This workflow adds the subtitle file as a track rather than burning text permanently into every frame. That means the viewer can turn subtitles on or off in players that support subtitle tracks.

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Add Subtitles from SRT

You might also need

You might also need

Video Trimmer Online Trim a video to the exact section you need for highlights, shorter uploads, cleaner demos, and faster browser-based sharing workflows. Video Format Converter Online Convert videos into another common format such as MP4, MOV, AVI, or MKV when the original file does not fit your next workflow. Video Compressor Online Compress videos into smaller MP4 files in the browser for uploads, email, sharing, and portal limits without using a heavy desktop editor.

How this subtitle workflow works

The tool combines your video and SRT file into one MP4 that includes a subtitle stream. This is a clean option for accessibility and delivery because it keeps the original video untouched while packaging the subtitles with it.

Soft subtitles are usually a better default than burned-in text when you want flexible viewing, cleaner visuals, or multilingual versions later.

Before you export

  • Make sure the SRT timing already matches the video.
  • Use UTF-8 encoded subtitle files when possible for cleaner character handling.
  • Test the final MP4 in the player or platform where the file will actually be used.

What to Expect

Combine a video and SRT file into an MP4 with a selectable subtitle track for accessibility, delivery, and cleaner caption workflows.

Browse Tiny Video Tools

Best for

  • Short practical video edits that do not need a full timeline editor.
  • Upload prep, highlight trimming, audio extraction, subtitle packaging, and GIF creation.
  • Privacy-first workflows where browser-side processing is preferable to third-party upload tools.

Not ideal for

  • Heavy multi-layer editing, color grading, or complex motion design.
  • Very long 4K sources on low-memory devices.
  • Studio-grade mastering where a full desktop editor belongs in the workflow.

What this tool keeps

  • The source file on your device while processing happens in the browser.
  • Simple export choices focused on fast turnaround rather than editing complexity.
  • Output formats that fit common sharing, upload, and review workflows.

What may need cleanup

  • Large files can take time to process and may stress lower-end devices.
  • Aggressive compression can soften text, motion detail, or subtitles.
  • Platform-specific playback differences still need a quick review after export.

Common errors

  • Trying to process a file that is far larger than the device can handle comfortably.
  • Using a GIF where a short MP4 would be smaller and clearer.
  • Assuming format conversion or compression will fix poor source footage.

Example use cases

  • Prep a clip for upload, share, support, documentation, or internal review.
  • Turn a talk or training clip into a lighter or more reusable format.
  • Package subtitles or extract audio without installing desktop software.

Sample input

A phone video, screen recording, webinar export, interview clip, or training file that needs one focused adjustment.

Sample output

A smaller MP4, a trimmed clip, an MP3, a GIF, or a subtitle-ready MP4.

Who this is for

  • Marketers, support teams, teachers, recruiters, founders, and anyone repurposing short video content quickly.

Frequently Asked Questions

What does this subtitle tool do?

It combines your video and SRT file into one MP4 that includes a selectable subtitle track.

Does it burn subtitles into the picture permanently?

No. This version adds a subtitle track instead of burning the text onto every frame.

What subtitle file should I upload?

Upload a standard SRT file that already matches the video timing.

Will every player show the subtitles automatically?

Not always. Subtitle-track support varies by app and platform, so test the final file where it will actually be used.