AI SMIL Generator for eBooks

Making an Entire eBook Catalog Read-Aloud Ready with AI

How a publisher used our AI SMIL Generator to add synchronized read-aloud narration to their EPUB titles — meeting accessibility standards at a fraction of the manual effort.

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Problem Statement

Manual Text-Audio Synchronization Was Too Slow and Too Expensive to Scale

Creating read-aloud ebooks requires SMIL files that align narration audio with the text, word by word. Done manually, a single title can take days of specialist effort — making it impractical to convert a full catalog.

With accessibility requirements tightening and readers increasingly expecting read-along experiences, the backlog of unconverted titles was becoming both a compliance risk and a missed market opportunity.

The publisher needed a way to produce standards-compliant media overlays at catalog scale, without sacrificing synchronization quality.

OUR SOLUTION

AI-Powered Synchronization at Publisher Scale

AI alignment of narration audio to text, word by word, with no manual tagging.
Standards-compliant EPUB 3 media overlay (SMIL) output that works in mainstream reading systems.
Batch processing to convert entire catalogs, not just single titles.
Quality review tools to preview and correct sync points before publishing.
Simple input and output formats that fit the existing publishing pipeline.

BENEFITS