What makes a Seedance 1.5 prompt work?

A good prompt has four slots: subject, action, camera, and look. Fill all four. The model was trained on caption data where cinematography terms map to real footage, so “dolly-in,” “handheld,” “telephoto,” and “golden hour” all do measurable work. Skip them and you get the default mid-shot look.

Keep it under roughly 100 words. Seedance 1.5 accepts a 512-token window but quality drops when you stack unrelated ideas. One scene per render.

How should I phrase camera and motion?

• Camera move: pick one — dolly-in, push-out, pan left, tilt up, orbit, static locked-off.
• Speed: “slow” or “fast” before the move (“slow orbit”).
• Lens feel: wide-angle, telephoto, macro, shallow depth of field.
• Action verb: one primary motion, singular. “She turns and smiles” beats “she moves around.”

One trap: do not ask for two camera moves in a 5-second clip. The model averages them and you get a muddy push-pan. Save the second move for the next clip and cut.

Does Seedance 1.5 handle image-to-video better than text-to-video?

Often yes. If you already have a strong still, feeding it as the first frame locks composition, palette, and subject identity, so the model only has to invent motion. This cuts the “weird face” problem dramatically. Upload a JPG or PNG under 10MB, describe only the movement (“camera slowly pushes in, hair moves in the breeze”), and leave the look alone — the still already sets it.

Why do my clips end abruptly?

Because 12 seconds is the hard ceiling and 5s renders have no room for a beat of silence. Plan for the cut, not against it. Shoot the entry at 5s, the action at 8s, and the exit at 5s, then join them. Match lighting direction across shots or the seams show. Seedance’s audio track also restarts per clip, so mute all three and lay a single music bed underneath instead.

Is prompt engineering still needed with newer models?

Less than in 2024, but not zero. Competitors such as Pika 3 lean harder on creative presets, while Seedance 1.5 rewards literal, technical captions. If you want the model to make stylistic choices for you, Pika is the faster path. If you want precise control over framing, write Seedance prompts like a shot list.

Quick Summary

• Structure prompts as subject + action + camera + look, under ~100 words.
• Use one camera move per clip; save the rest for the cut.
• Image-to-video locks composition and reduces facial artifacts.
• Accept the 12s ceiling and plan three-shot sequences instead of one long take.
• Write captions like a DP, not a copywriter — camera terms carry weight.

What is Seedance 1.5?

It is a diffusion-based video generator from ByteDance, the company behind TikTok and CapCut. Unlike the first Seedance, version 1.5 adds lip-sync and ambient sound in the same pass, so you do not have to run a separate audio tool. The model handles text-to-video and image-to-video, and it understands a 512-token prompt window.

Output lands at 720p or 1080p, 24fps, in 5s, 8s, or 12s lengths. Vertical 9:16 and widescreen 16:9 are both supported, which matters if you post to Shorts or Reels.

How do I generate a video with Seedance 1.5?

1. Open Dreamina and sign in with a ByteDance, TikTok, or Google account.
2. Switch the model selector to Seedance 1.5 (it defaults to the older version on some accounts).
3. Enter a prompt. Be concrete: “slow dolly-in on a ceramic cup, steam rising, morning window light, shallow depth of field.”
4. Choose resolution (1080p uses more credits), duration, and aspect ratio.
5. If you are doing image-to-video, upload a still under 10MB as the first frame.
6. Hit Generate. A 5s 720p clip typically finishes in 60-90 seconds.

Keep the camera instruction and the subject in separate sentences. Mixing “a woman walking” with “rapid zoom” in one clause often produces a static shot, in my experience.

Is Seedance 1.5 free?

No, not for sustained use. Dreamina gives new accounts a small pool of trial credits that covers two or three 5s clips. After that you buy credit packs; a 1080p 5s render costs more than a 720p one. The API on Volcano Engine is billed per second of generated video, which is cheaper for volume work but needs a Chinese phone number for signup. If you only need a handful of clips a month, the pay-as-you-go web path is simpler.

Seedance 1.5 vs Wan 2.2: which should you pick?

Wan 2.2 is Alibaba’s open-weight alternative and runs locally if you have a 24GB GPU. That is its big edge: no per-render fee and full control. Seedance 1.5 wins on polish, audio, and speed without hardware. Pick Seedance for fast commercial clips; pick Wan 2.2 if you want to fine-tune and avoid credits.

Where does Seedance 1.5 fall short?

Two things stand out. Hands and fast action still break — a person waving can smear across frames. And the 12-second ceiling is tight for anything narrative; you will need to stitch clips, and cuts between them are not always seamless in lighting. Text rendered inside the video is also unreliable, so avoid on-screen titles as a creative choice.

Quick Summary

• Seedance 1.5 is ByteDance’s text/image-to-video model with native audio, up to 12s at 1080p.
• Access it via Dreamina (web credits) or the Volcano Engine API (per-second billing).
• Free trial credits cover only a few clips; sustained use is paid.
• Best for short product and social clips; weak on hands, fast action, and embedded text.
• Choose Wan 2.2 instead if you want a locally-run open model.