How to Create Eye-Catching B-Roll Images for YouTube Videos Using AI

What is B-Roll and why does it matter?

B-Roll is the visual content that plays on screen while the narrator is speaking. In a traditional video production, it's the footage that supports the story — a cutaway to a street, an old photograph, a close-up of an object.

In a faceless YouTube video, B-Roll images are your entire visual layer. The viewer watches a sequence of images while hearing the voiceover. The quality, variety, and relevance of those images directly affect whether people keep watching.

Step-by-step: creating B-Roll images for your video

1

Set your image parameters

In the B-Roll Library, you'll see three settings before splitting your script:

Chars per image

How many characters of script each image covers. 500–700 chars ≈ one image per 15–20 seconds of narration. For a 3-minute video this gives you about 8–10 images.

Image Style

The visual style for all images in this video. Choose one and stick with it — consistency makes the video look professional.

Image Language

If any text appears inside the images (signs, labels, captions), this sets the language for that text.

2

Split your script into segments

Click "Split Script into Segments". The tool reads your script and divides it into equal chunks — one image segment per chunk. Each segment shows you the text it covers.

This step is free — it's just splitting text. No AI credits used until you start generating images.

3

Generate images one by one (or all at once)

Each segment card has a "Generate Image" button. The AI reads the segment text, understands what's happening in that part of your story, and generates an image that matches.

You can click generate on all segments in quick succession — they'll process in parallel. Most images are ready in about 30 seconds.

[Screenshot: B-Roll Library — Anime/Manga style selected, 3 generated B-Roll images showing atmospheric horror scenes, Regenerate (10 credits) and Delete buttons on each card.]

Each image card shows the segment text and the generated image. Regenerate any you want to change.

4

Review and regenerate

Once all images are generated, scroll through and identify any that don't fit. You can:

• › Regenerate — tries again with the same description (free if the previous attempt failed, otherwise 10 credits)
• › Edit the description — click on the segment text to change it, then regenerate with a more specific prompt
• › Delete and skip — if a segment works better without an image

Choosing the right image style for your niche

Your image style defines the visual identity of your channel. Pick one that fits your content — and be consistent. Here are the main options:

You can also type a custom style description instead of picking a preset — for example, "dark oil painting with dramatic shadows" or "children's book illustration".

How images are timed in the exported video

You don't need to manually set how long each image stays on screen. When you export the video, the tool automatically divides the total voiceover duration evenly across all your B-Roll images.

For example: a 3-minute voiceover with 8 images → each image shows for approximately 22 seconds. During that 22 seconds, the image slowly pans and zooms (Ken Burns effect) to keep things visually dynamic.

Transitions between images are crossfades — the last frame of one image blends into the first frame of the next. This gives the video a smooth, professional feel without any manual editing.