Convert WEBM to captions

Captions include speaker identification and sound descriptions (music, applause, typing sounds) for deaf and hard-of-hearing viewers. Subtitles assume the viewer can hear and focus on translating dialogue.

Sonix generates captions meeting ADA, Section 508, and WCAG requirements when you include speaker labels and review for accuracy. Essential for accessible web content.

Yes! After transcription, add non-speech descriptions like [music playing], [keyboard typing], or [door closes] in Sonix's editor for fully accessible captions.

Export captions from Sonix as VTT, add to your HTML5 video with kind='captions', and include sound descriptions. This meets accessibility standards for web video.

SRT is universally accepted by YouTube, Vimeo, and other platforms. Upload the SRT file through the platform's caption or accessibility settings.

Sonix achieves 99%+ accuracy on clear WebM audio. Opus audio, optimized for voice, produces excellent results. Quick human review ensures professional caption quality.

Many desktop editing applications do not include VP8/VP9 decoders, so WebM files may need conversion to MP4 before importing, even though browsers and players like VLC handle them natively.

Upload the WebM file for transcription, review and edit the resulting transcript, then export it as an SRT or VTT caption file that most video players and platforms accept.