Create English closed captions

Closed captions include all audio elements (dialogue, sound effects, music cues) for deaf and hard-of-hearing viewers. Subtitles typically only include dialogue and are meant for viewers who can hear but don't understand the spoken language. Sonix can create both.

Yes. Sonix generates captions that meet ADA (Americans with Disabilities Act), Section 508, and WCAG 2.1 accessibility requirements. Our captions include accurate timing, proper synchronization, and support for required caption formats.

Yes! In the Sonix editor, you can add non-speech audio descriptions like [music playing], [applause], or [door closes]. These descriptions help deaf and hard-of-hearing viewers understand the full audio context.

Sonix delivers 85-99% accuracy for English captioning depending on audio quality. Clear audio with minimal background noise achieves the best results. You can review and edit captions in our browser-based editor.

All major video platforms support closed captions including YouTube, Vimeo, Facebook, Twitter, LinkedIn, and Wistia. Sonix exports SRT and VTT formats compatible with all these platforms and more.

Yes! Sonix offers a burn-in feature that permanently embeds captions into your video file. This is useful for social media where closed captions may not display automatically. See our burn-in subtitles service for more details.

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.

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.

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.