How to build a B-roll library from one filming session
Upload one long recording and list the actions you want covered. Vizard Agent works through the whole session, picks a dozen or more visually distinct moments, trims each into a clean five-to-fifteen-second clip, and delivers them as a library you can reuse in every future post.
What do you type into Vizard Agent?
List the actions rather than describing the vibe. Vizard Agent searches the footage for each one, so a list of specific movements produces a far more varied library than any description of a feeling. Saying "no talking to camera" matters too, because B-roll has to sit under narration.
Prompt
What does Vizard Agent actually do?
It reviews the candidates three separate times at increasing detail, which is why the clips start and end on clean action rather than mid-movement. It also tests colour before rendering, because clips that don't match your main footage won't get used. In the session behind this article it:
- Checked the recording, 1199 seconds of 1080x1920 at 30fps, scanned it for the listed actions and sampled frames across all of it into contact sheets.
- Drafted a candidate list with previews, examined candidates one to twenty in two batches, then built three-frame inspection sheets for every shortlisted clip.
- Searched each section again with labelled timestamp sheets, inspecting each activity group against its exact timestamps.
- Tested colour reproduction across encode settings before rendering anything.
- Rendered all fifteen clips, checked them on quality-control sheets, and refined the trickiest actions from second-by-second grids.
- Uploaded the fifteen clips and verified the list of URLs.
When does this not work well?
A library can only contain what the session contained. Vizard Agent tells you which listed actions it couldn't find rather than substituting something loosely similar. A single locked-off angle gives little variety, constant talking leaves few clips without speech, and selection can't rescue poor light.
Common questions
How much footage do I need? Twenty minutes gives a comfortable library. Vizard Agent needs variety more than length.
Will the colour match my main footage? It tests for that. Vizard Agent checks colour reproduction before rendering the set.
Will they have captions? Not unless you ask. Vizard Agent delivers them plain so they stay reusable.