The document-to-video pipeline, end to end

Stage 1 — Extraction

Getting text, structure, and figures out of the file. Safe to automate entirely. The one failure mode is a scanned PDF, which has no text layer and needs OCR first; a pipeline that silently produces an empty script on a scan is a pipeline that will embarrass you at scale.

Stage 2 — Segmentation

Deciding where scenes start. Safe to automate for documents with real headings, because the author already made this decision. It degrades on documents that use bold text instead of heading styles, which is most Word exports — worth fixing at the source rather than in the pipeline.

Stage 3 — The cut

Deciding what does not go in the video. This is the first of the two stages you should not hand over. A machine will faithfully narrate all forty minutes of your whitepaper, because nothing in the document says which parts are load-bearing.

You know which finding matters and which appendix exists for the reviewers. Spend fifteen minutes here and the rest of the pipeline gets easier, cheaper, and better.

Stage 4 — The rewrite

Converting written prose to spoken narration. Automate the first pass, check every line. This is where a model can drop a qualifier or firm up a hedge, and it is the only stage whose errors are invisible in the finished video unless you knew the source.

• Check every number against the document.
• Check every hedge — 'may', 'suggests', 'associated with' — survived.
• Check acronyms and proper nouns, which affect pronunciation as well as accuracy.

Stage 5 — Visual assignment

Putting your figures on the scenes that discuss them, and choosing what fills the scenes without figures. Mostly automatable; the check is a single fast watch to catch a chart landing against the wrong paragraph.

This is also the stage to resist generated imagery. Your document's own charts carry information; a synthesised abstract visual does not.

Stage 6 — Render

Voice synthesis, typesetting, and encoding. Fully automatable, and the only stage that costs real money, which is why it is the one every free tier meters. Get stages 3 and 4 right and you render once instead of four times.

Stage 7 — Distribution

Uploading, per-platform cuts, captions, descriptions, and the link back to the document. The most commonly skipped stage and the one with the clearest return: a video published to one platform with a default title does a fraction of the work of the same video cut three ways with a written description.

Automate the mechanical parts — caption files, aspect ratios, thumbnails — and write the descriptions yourself.

Frequently Asked Questions