Prompts
Founder build-in-public video b-roll prompts
These prompts pull the right shots from your uploads for a founder build-in-public video (face take, handheld or at your desk, screen recording of the…
By Sulan Zhang, co-founder of Vyra · Updated 2026-09-24
- Format
- Founder build-in-public video
- Step
- B-roll
- Length
- 30-90s
- Aspect
- 9:16
- Platforms
- TikTok, Reels, Shorts, X, LinkedIn, YouTube
Real examples from @sulansart
More on InstagramVyra describes every scene when you upload, so you can ask for a shot by what's in it. You don't need file names.
At a glance
| Shot list | Face take, handheld or at your desk. Screen recording of the product or dashboard. Metrics screenshot. |
| Pacing | Face 5-8 seconds, screen 3-5 seconds, back and forth |
| Caption style | Phrase captions, big number cards |
| Avoid | Vague updates ("big week"); Numbers said but not shown; Too polished |
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 founder build-in-public video from the clips I uploaded. Look for these shots. Face take, handheld or at your desk. Screen recording of the product or dashboard. Metrics screenshot. Pacing: face 5-8 seconds, screen 3-5 seconds, back and forth. Put each clip on the words it shows and keep my audio running underneath.
Full:
Add b-roll to my founder build-in-public video from the clips I uploaded.
Look for these shots. Face take, handheld or at your desk. Screen recording of the product or dashboard. Metrics screenshot.
Pacing: face 5-8 seconds, screen 3-5 seconds, back and forth.
Put each clip on the words it shows and keep my audio running underneath.
Keep captions on during b-roll.
Avoid these. Vague updates ("big week") Numbers said but not shown. Too polished.
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 founder build-in-public 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 (face 5-8 seconds, screen 3-5 seconds, back and forth) 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 take, handheld or at your desk, screen recording of the product or dashboard, metrics screenshot), upload it to the same project, and run the prompt again.