Instagram Reel B-Roll AI Generator
Generated on PixelDojo with Seedance 2 Mini. Produced by PixelDojo's generation pipeline.
B-roll for a Reel just needs to be vertical, short, and busy enough to cut to. We generated the clip below with Seedance 2 Mini on August 26, 2026: 9:16, 480p, a 5 second clip, 5 credits, back in about 195 seconds. This page covers the prompt pattern for supplementary footage and what the cheapest video settings actually look like.
The 5 credit vertical clip, one continuous action
Every example below was produced on PixelDojo. Hover to see the prompt.
Vertical format: a street food vendor flips noodles in a flaming wok at night, neon signs behind, steam and sparks, dynamic close-up tracking shot, b-roll footage for a social media reel
Seedance 2 Mini
9:16, 480p, 5 seconds, 5 credits, about 195 seconds turnaround on August 26, 2026.
How It Works
How we generated it, so you can repeat it:
Write the clip as one continuous action
B-roll does not need a story, it needs one clear motion the camera can hold on for the length of the shot. Our prompt described a street food vendor flipping noodles in a flaming wok, one action from start to finish.
Set the aspect ratio to 9:16 before you generate
A Reel crops to vertical regardless, so generating natively vertical avoids losing the sides of the frame. We set Seedance 2 Mini's aspect_ratio to 9:16 at 480p, the cheapest resolution the mini tier accepts.
Generate short, then cut several together
One 5 second clip cost 5 credits. B-roll works best as several of these cut back to back rather than one long clip, so budget credits per clip, not per finished Reel.
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Common Questions
Everything you need to know about Instagram Reel B-Roll
What does one b-roll clip cost?
Seedance 2 Mini prices by the second: 1 credit per second at 480p, 2 credits per second at 720p. A 5 second clip, the shortest duration it accepts, comes to 5 credits at 480p.
How long does it take?
About 195 seconds end to end in our August 26, 2026 run. Turnaround moves with queue load, so treat that as a typical figure.
Does it actually come out vertical?
Yes. Ours returned at 496 by 864 pixels, a 9:16 frame, with an audio track already attached in the file even though the prompt did not ask for narration.
What is the cheapest way to get several b-roll clips?
Stack short 5 second clips at 480p rather than generating one longer clip, since both duration and resolution multiply the per-second price.
Can I animate a photo instead of writing a scene from scratch?
Yes. Seedance 2 Mini also accepts an image_url for image-to-video mode, so a product photo or a still you already like becomes the source instead of a text description.
How do I call it from the API?
POST to /api/v1/models/seedance-2-mini/run with prompt, aspect_ratio, resolution and duration set to the values you want.