Hardcode English subtitles into video

Permanently embed English subtitles directly into your video pixels. Burned-in captions display on any device or platform—perfect for Instagram, TikTok, LinkedIn, and social media.

Free to start — no credit card required.See pricing

Permanent display
Custom styling
Social media ready
English transcription guide

Hardcode English subtitles in 5 steps

  1. 1
    1. Upload video~1 min

    Upload your video file from your computer, Dropbox, or Google Drive.

    50+ formats supported
  2. 2
    2. Generate subtitles~5 min

    Sonix AI transcribes your English video and generates subtitles automatically.

    Word-level timestamps
  3. 3
    3. Edit transcript~2 min

    Correct errors and adjust subtitle timing in the browser-based editor.

  4. 4
    4. Choose style~1 min

    Customize subtitle font, size, color, background, and position with a live preview before rendering.

  5. 5
    5. Render video~5 min

    Sonix burns your English subtitles directly into the video pixels.

The English language

Understanding English transcription

Who transcribes English content?

English is the default working language for podcasters, journalists, market researchers, courts, and universities across the United States, the United Kingdom, Canada, Australia, and dozens of other countries. Corporate teams also transcribe English meetings, webinars, and earnings calls to create searchable records and captions.

English dialects and accents

English spans many regional varieties, including American, British, Australian, Irish, Canadian, Caribbean, Indian, and Nigerian English, each with distinct pronunciation, vocabulary, and rhythm. Non-rhotic accents (many British and Australian varieties drop the "r" after vowels, as in "car" or "letter") and vowel shifts across regions are the variations most likely to affect speech recognition.

Where English is spoken

English is spoken in Antigua and Barbuda, Australia, The Bahamas, Barbados, Belize, Canada, Dominica, Grenada, Guyana, Ireland, Jamaica, New Zealand, St Kitts and Nevis, St Lucia, St Vincent and the Grenadines, Trinidad and Tobago, United Kingdom, United States of America.

10 min
Average processing
Rendering time varies by video length
100%
Display reliability
Subtitles visible on every device
MP4
Output format
Universal video format
15+
Style options
Fonts, colors, and positions
English transcription FAQ

Frequently asked questions about
English burn-in subtitles

What's the difference between burn-in and soft subtitles?

Burn-in (hardcoded) subtitles are permanently embedded in the video pixels and cannot be turned off. Soft subtitles (SRT/VTT) are separate files that viewers can toggle on/off. Burn-in is ideal for social media where caption support is inconsistent.

Can I customize the subtitle appearance?

Yes! Sonix offers extensive styling options including font family, size, color, background color, opacity, and position (top, middle, bottom). Preview your style in real-time before rendering.

Will burn-in subtitles reduce video quality?

Sonix preserves your original video quality during the burn-in process. We use high-quality rendering to ensure subtitles look crisp and professional without degrading your footage.

How long does burn-in processing take?

Processing time depends on video length and resolution. A typical 10-minute 1080p video takes about 5-10 minutes to render. You'll receive an email notification when your video is ready.

What video format does burn-in export?

Sonix exports burned-in videos as MP4 files with H.264 encoding—the most universally compatible video format. Your video will play on virtually any device or platform.

Can I edit subtitles after burn-in?

No. Once subtitles are burned in, they're permanent. We recommend thoroughly reviewing and editing your transcript in the Sonix editor before rendering. You can always create a new burn-in version if needed.

Can Sonix transcribe British and Australian English as well as American English?

Yes. Sonix transcribes English recordings from any region, including British, Australian, Irish, Canadian, and Caribbean accents. Upload your file, review the transcript in the in-browser editor, and export it in your preferred format.

Does English transcription handle recordings with multiple accents?

Yes. A single English recording can include speakers with different regional accents, and Sonix transcribes them in one pass. Speaker labels help you attribute lines to each participant while you edit.

Can Sonix transcribe English audio with heavy background noise?

Sonix can transcribe noisy English audio, but cleaner recordings produce better results. Recordings with background noise, low volume, or crosstalk typically need more correction in the editor.

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