Prompts

Explainer video b-roll prompts

These prompts pull the right shots from your uploads for an explainer video (face or voiceover, one diagram per idea) and place them on the words they show.

By Sulan Zhang, co-founder of Vyra · Updated 2026-09-24

Format: Explainer video
Step: B-roll
Length: 45-120s
Aspect: 9:16 or 16:9
Platforms: YouTube, TikTok, Reels, Shorts, LinkedIn

Real examples from @sulansart

At a glance


Shot list	Face or voiceover. One diagram per idea. Real b-roll where it exists. A summary card.
Pacing	10-20 seconds per idea, graphic changes with each one
Caption style	Phrase captions, key terms as big text
Avoid	Too many ideas; Graphics that decorate instead of explain; No summary

Prompt it in Vyra

Minimal:

Add b-roll from my clips over the parts where I talk about something you can show.

Standard:

Add b-roll to my explainer video from the clips I uploaded.
Look for these shots. Face or voiceover. One diagram per idea. Real b-roll where it exists. A summary card.
Pacing: 10-20 seconds per idea, graphic changes with each one.
Put each clip on the words it shows and keep my audio running underneath.

Full:

Add b-roll to my explainer video from the clips I uploaded.
Look for these shots. Face or voiceover. One diagram per idea. Real b-roll where it exists. A summary card.
Pacing: 10-20 seconds per idea, graphic changes with each one.
Put each clip on the words it shows and keep my audio running underneath.
Keep captions on during b-roll.
Avoid these. Too many ideas. Graphics that decorate instead of explain. No summary.
Don't use any clip twice. When you're done, list which clip went where with timestamps.

Why these settings

The shot list is the one from our explainer video page. Asking for shots by what's in them is faster than digging up file names.
"Keep my audio running" stops it from cutting your voice along with the picture.
The pacing line (10-20 seconds per idea, graphic changes with each one) sets how long b-roll stays before it cuts back.
A list of placements with timestamps makes the result quick to check.

Fixes

B-roll stays too long. "Come back to my face after 3 seconds of b-roll."
Wrong shot. "At 0:22 use the close-up of my hands instead."
Cuts away mid-word. "Only cut to b-roll at the end of a word."

FAQ

Does it use stock footage? No. It only uses the clips you upload. We don't generate footage.

Do I need every shot before I start? No. Run it with what you have. Then film the rest of the shot list (face or voiceover, one diagram per idea, real b-roll where it exists, a summary card), upload it to the same project, and run the prompt again.