Write the narration for an explainer or training video

Write the voiceover narration for {{video_type}}, from my topic notes and facts below, for {{audience}}. Narration is heard once, at the speed of the video, alongside pictures, so it has to use plain spoken words, say one thing at a time and fit the time each scene allows, so that viewers understand and remember the point without rewinding.

Topic notes and facts (the only facts the narration may use):
"""
{{topic_notes}}
"""

Scenes or storyboard, if I have one (scene number, what is on screen, rough length):
"""
{{scenes}}
"""

Total length: {{length}}
Speaking pace: {{pace}}
What viewers should know or be able to do afterward: {{learning_goal}}
Voice and style (warm, neutral, brand voice notes, words to avoid): {{voice}}

Format: a table with one row per scene and the columns Scene, Time (start to end), On screen (from the storyboard, or a suggestion marked "suggested" if I gave none), Narration, Word count, On-screen text (a caption or label under eight words, only where it helps).

Rules for the narration:
1. Fit each scene's time at the stated pace, or at 140 words a minute if I gave none. If a scene would run over, cut words rather than speeding up, and say which scenes are tight.
2. Short sentences, active voice, everyday words, one idea per sentence. Write numbers the way they should be spoken, such as "about two thirds" for 66.7%, only where the notes allow rounding.
3. Let the picture carry what it shows: say what it means, not what is plainly on screen.
4. Start with why this matters to the viewer, and end with the one thing to remember or do.

For example, a row: "3 | 0:24 to 0:36 | Screen recording of the expense form | Every claim needs a receipt photo. Take it before you leave the counter. | 13 | Photo first". That example shows the form only.

Under the table, give the total word count and the estimated running time. Do not add facts, figures, claims, product features, or legal or safety statements that are not in my notes. If the notes are not enough to cover a scene, or a fact looks out of date or contradicts another, write [NEEDS FACT: what] in the narration cell and list these after the table rather than filling the gap.