Seedance 1.5 Pro is the ByteDance video model on VdoBloom that gives you per-second duration control from 4 to 14 seconds, output at 480p, 720p or 1080p, six aspect ratios including cinema-wide 21:9, and the most flexible content filtering in the Seedance family — billed at 0.75, 1.5 and 3.0 credits per second for 480p, 720p and 1080p respectively. That last number is the one most people get wrong: a full 14-second 1080p clip costs 42 credits, or about $2.10 at the Lite plan rate, while the same shot drafted at 480p costs 10 credits. Used in that order, the model is one of the cheapest serious video generators on the platform.

What Seedance 1.5 Pro is actually best at

Seedance 1.5 Pro is the generation ByteDance shipped before Seedance 2, and it stays in VdoBloom’s lineup for two deliberate reasons rather than as a leftover.

The first is the duration ladder. Where most video models offer two or three fixed lengths, 1.5 Pro accepts any whole-second value from 4 to 14. If your edit needs a 7-second insert, you generate 7 seconds and drop it in. Nothing gets trimmed, nothing gets looped, and you are not paying for 3 seconds of footage you throw away.

The second is its content label. In the VdoBloom model picker, 1.5 Pro carries the HOT badge, the family’s most flexible filtering tier — the entire Seedance 2 trio (Seedance 2, Seedance 2 Fast, Seedance 2 Mini) runs the stricter MODERATE label instead. In practice that means swimwear, dance, fitness and fashion prompts that stricter models decline will usually generate here. Explicit and illegal content stays blocked regardless of the model you pick; the difference is in the grey zone, not the banned zone.

Where it is weakest is resolution ceiling. 1080p is the top tier. If your deliverable is a 4K hero loop, this is the wrong model and you want Seedance 2 instead.

Real specs and exact credit costs

Seedance 1.5 Pro supports both text-to-video and image-to-video from the same page. Durations are 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 and 14 seconds. Resolutions are 480p, 720p and 1080p. Aspect ratios are 16:9, 9:16, 1:1, 4:3, 3:4 and 21:9.

Pricing is genuinely per-second, not per-tier, so the table below is a set of landmarks rather than a fixed menu. Dollar figures use the Lite plan rate of $15 for 300 credits, which makes 1 credit equal to $0.05.

Resolution	Rate	4 seconds	8 seconds	12 seconds	14 seconds
480p	0.75 credits/sec	3 credits ($0.15)	6 credits ($0.30)	9 credits ($0.45)	10 credits ($0.50)
720p	1.5 credits/sec	6 credits ($0.30)	12 credits ($0.60)	18 credits ($0.90)	21 credits ($1.05)
1080p	3.0 credits/sec	12 credits ($0.60)	24 credits ($1.20)	36 credits ($1.80)	42 credits ($2.10)

Two things follow from that structure. Each resolution step doubles the bill, so moving a 10-second clip from 480p to 1080p takes it from 8 credits to 30. And when a generation is produced with audio, the per-second rate doubles again — a 1080p clip with sound is billed at 6 credits per second. VdoBloom always shows the exact credit cost for your selected settings before you press generate, so you never have to reconstruct this arithmetic in your head.

New accounts get 10 free credits with no card, which is enough for three 4-second 480p test clips plus change — a real look at how the model handles your subject before you spend anything. Beyond that, subscriptions start at $15 per month for 300 credits, and one-time credit packs start at $2.49 for 75 credits that never expire. Paid plans download watermark-free with commercial rights. Full details are on the pricing page.

How to prompt Seedance 1.5 Pro well

The model responds to shot language more reliably than to adjective stacking. A prompt built as subject, action, camera, lighting, setting outperforms the same information delivered as a pile of style words.

Name the camera move explicitly. Slow dolly in, handheld follow, static locked-off, orbit left. Left unspecified, the model invents a move, and the one it invents is rarely the one your edit needs.
Give the motion a speed. Slow, deliberate, gradual and steady all read differently from quick or sudden. Duration and motion speed interact: a 14-second clip with fast action tends to drift, while a 14-second clip with one slow continuous move holds together.
Describe one action, not three. The single most common cause of a mushy generation is a prompt that asks the subject to walk, then turn, then smile. Pick the beat that matters and generate the next beat as a separate clip.
Set the light. Golden hour backlight, soft overcast, hard noon sun, neon practicals. Lighting drives the perceived quality of the output more than resolution does.
Match the ratio to the destination before you generate. 9:16 for Reels, Shorts and TikTok, 16:9 for YouTube and web embeds, 21:9 when you want the frame to read as film. Re-cropping a 16:9 render into 9:16 wastes most of the frame.

If you want a running start, VdoBloom keeps a library of tested Seedance prompts in the Seedance prompt collection, and the ready-made photo-motion templates on the Seedance effects tab handle common shots without writing a prompt at all. If you are animating a photograph of a real person, you must have that person’s consent before generating.

A worked example

Say you need a 9:16 clip of a model walking along a rooftop at sunset for a fashion brand’s Reels feed, and you want it to run about 7 seconds.

Open the text-to-video tab and pick Seedance 1.5 Pro from the Seedance family in the model picker.
Set aspect ratio to 9:16, resolution to 480p and duration to 7 seconds. The cost preview reads 5 credits.
Prompt: a woman in a flowing linen dress walks slowly toward the camera along a rooftop terrace at golden hour, warm backlight rimming her hair, city skyline soft behind her, camera dollies back at walking pace, handheld feel.
Generate twice at 480p, roughly 10 credits total, and compare which take reads better.
Re-run the winning prompt unchanged at 1080p, 7 seconds, still 9:16. That render costs 21 credits, about $1.05.

Total spend for two drafts and one finished 1080p vertical clip: 31 credits, roughly $1.55. Drafting straight at 1080p and rerolling twice would have cost 63 credits for the same result.

When to pick a different model

You need	Pick instead	Why
4K output or 15-second clips	Seedance 2	Adds a 4K tier and extends the ladder to 15 seconds
Clips longer than 15 seconds	Seedance 2.5	Runs from 4 all the way to 30 seconds
Many cheap throwaway variations	Seedance 2 Mini	The cheapest and fastest member of the family, capped at 720p
Maximum filtering flexibility	Seedance 1.5 Pro	It is already the HOT-labeled option; see the flexible-filtering overview

Otherwise, 1.5 Pro remains the sensible default for most social and web delivery: 1080p is enough, the per-second billing is honest, and the filtering gets out of the way. Browse the full lineup in the model directory if you want to compare it against something outside the Seedance family.

Frequently asked questions

How much does a Seedance 1.5 Pro video cost?

It is priced per second: 0.75 credits per second at 480p, 1.5 at 720p and 3.0 at 1080p. So an 8-second 720p clip is 12 credits, about $0.60 at the Lite plan rate of $15 for 300 credits. Generations with audio are billed at double the rate.

What durations does Seedance 1.5 Pro support?

Any whole number of seconds from 4 to 14 — eleven options in total — in both text-to-video and image-to-video modes. That is one second shorter at the top end than Seedance 2, which reaches 15.

Can Seedance 1.5 Pro output 4K?

No. Its top tier is 1080p. For 4K you need Seedance 2, which adds a fourth resolution tier above 1080p.

Is Seedance 1.5 Pro less filtered than Seedance 2?

Yes. 1.5 Pro carries the HOT content label on VdoBloom, while Seedance 2, Seedance 2 Fast and Seedance 2 Mini all carry the stricter MODERATE label. Prompts in the swimwear, dance and fitness range that stricter models refuse will often generate on 1.5 Pro. Explicit and illegal content remains blocked on every model.

Does it work from an image as well as a prompt?

Yes. Text-to-video and image-to-video both use the same settings and the same per-second pricing. Start from the image-to-video tab when you already have the frame you want to animate.

Can I try it without paying?

Yes. New accounts get 10 free credits with no card, which covers three 4-second 480p renders. There is also a free generator overview explaining what the free tier includes.

How to Use ByteDance Seedance 1.5 Pro: Settings, Credit Costs and Prompts