Audio & video

What the rule requires

Media embedded in a document needs to be identified for what it is and carry an alternate description, so assistive technology can tell the user what’s there.

How Proof clears it

1. 01

   Media annotations typed and checked automatically, with alternate descriptions written for each media object.

2. 02

   Placeholder descriptions flagged for a human wording pass.

What to expect

Captions and transcripts are inherently authoring work no PDF tool can generate — Proof handles the structural side and is honest about that boundary.