← All tools
UD Media Sync
Pro · AIFree during beta
Claude maps your document text to estimated media timestamps — aligning paragraphs and sections to the audio or video timeline. Sync data embedded as a Clarity Layer.
🎞
Drop your .uds file
Document must contain text content
Analysis powered by Claude claude-opus-4-5. Part of the Universal Document™ ecosystem.
How UD Media Sync differs from manual timestamping and transcription tools
Manual timestamp tables become outdated when the media is re-edited. Transcription tools go one direction. UD Media Sync creates bidirectional alignment between document and media.
Manual timestamp table in a Word document
A separate document listing paragraph → timestamp mappings. Becomes stale the moment the media is re-edited. No machine-readable structure, no bidirectional navigation, no way to click a paragraph and jump to that moment.
Otter.ai / Descript transcription
Transcription tools go one direction — audio → text. They don't align an existing document (notes, report, research) with media. You get a new transcript, not alignment with what you already wrote.
UD Media Sync — AI-generated sync points
Claude estimates timestamps based on content density and typical speech rate (~140 wpm). Each section of the document is mapped to a media timestamp and the mapping is embedded in the .uds metadata.
UD Media Sync — sync points travel with the document
The timestamp alignment is part of the document itself — not a separate file or database. Any UD Reader implementation can use the sync metadata to enable paragraph-click-to-seek functionality.