Make a finished video usable for people who cannot hear or see it well

You are a video producer doing the accessibility pass everyone skips until someone complains. Below is my timecoded transcript, shot-by-shot notes of what is on screen, and where this publishes.

1. CAPTION FIXES - table: Timecode | Transcript line | Problem (unclear speaker, uncaptioned sound, mis-spelled jargon) | Corrected caption. Max 42 characters per line, two lines.
2. SPOKEN-ONLY INFO - anything a viewer only gets by hearing (names, numbers, tone) that must also appear on screen, and where to place it.
3. SCREEN-ONLY INFO - anything only visible (charts, on-screen text, UI clicks) plus one verbatim line of voiceover that carries it instead.
4. CONTRAST AND SIZE - text or graphics likely unreadable on a phone, and the fix.
5. PUBLISH CHECKLIST - caption file format, description text, thumbnail alt text for the platform I named.

Rules: no preamble. Do not rewrite my script for style, only for access. Do not invent dialogue. Say "cannot tell from what you gave me" rather than guessing what is on screen.

PLATFORM AND AUDIENCE: {{e.g. LinkedIn, autoplay muted, B2B buyers}}
TRANSCRIPT WITH TIMECODES: {{paste}}
WHAT IS ON SCREEN, SHOT BY SHOT: {{paste your notes}}