Seedance AI動画モデル
ByteDance’s video-generation family — Seedance 2.5 renders up to 15-second 1080p takes, Seedance 2.0 covers 480p–720p output in three quality tiers.
Seedanceとは？
Seedance is the video-generation family from ByteDance, the AI lab behind TikTok’s recommendation graph and Douyin’s creator tooling. Two versions run on ZNIX today: Seedance 2.5, the higher-resolution flagship, and Seedance 2.0, the volume workhorse with three selectable quality tiers.
Seedance 2.5 renders a single take of up to 15 seconds at 480p, 720p or 1080p, in six aspect ratios spanning 21:9 cinema to 9:16 vertical. All three input modes are wired up: write a prompt (text-to-video), pin a product photo or face (image-to-video), or hand it a first and last keyframe and let it interpolate the camera move between them.
Seedance 2.0 trades the 1080p ceiling for cost control. Its default High Quality tier matches 2.5’s 15-second ceiling at 480p/720p and keeps every input mode; the cheaper Fast and Economy tiers are text-to-video only. Seedance 1.5 is not currently offered on ZNIX — the availability panel further down this page is generated from the live model registry, so it always reflects what the composer can actually queue.
Seedanceの機能
Up to 15-second takes
A complete product beat or short-form hook in one pass — no stitching two clips and hoping the second one matches.
1080p on 2.5, 480p–720p on 2.0
Draft at 480p, then re-render the keeper at 720p or 1080p. Both versions take the same prompt, so upgrading is a settings change, not a rewrite.
Widescreen to vertical
21:9 cinema, 16:9, 4:3, 3:4, 1:1 and 9:16 are all native — one family covers a media plan without letterboxing or cropping.
Text, image and keyframe input
Prompt it (T2V), pin a product photo or face (I2V), or define the opening and closing frame and let keyframe mode interpolate the move between them.
Quality tiers on 2.0
High Quality (default) keeps all three input modes and the 15-second ceiling; Fast and Economy cut the cost per second for text-only batch runs.
Physics that hold on product shots
Liquids pour, fabric drapes, packaging keeps its silhouette — the family is tuned for commercial product and human subjects rather than pure abstraction.
Seedanceの料金は？
レンダリング単位課金、クレジット精算。登録で無料クレジット。商用ライセンス込み。
| シナリオ | クレジット | USD概算 |
|---|---|---|
| Seedance 2.5 · 480p · 4s | 610 | ~$6.10 |
| Seedance 2.5 · 720p · 4s | 1373 | ~$13.73 |
| Seedance 2.5 · 1080p · 4s | 3400 | ~$34.00 |
| Seedance 2.0 · High Quality · 480p · 5s | 525 | ~$5.25 |
| Seedance 2.0 · High Quality · 720p · 5s | 1137 | ~$11.37 |
USD概算は$0.01/クレジット基準。サブスクリプションでさらに割引 — 料金ページをご覧ください。
Live prices, computed by the same engine that settles your render. Shortest available duration shown for each resolution.
Seedanceのベストユースケース
Performance ad teams
Draft hooks small and cheap, then re-render the winners at 1080p on 2.5. Routing the long tail through 2.0 Fast or Economy keeps cost per second down on variants that never leave testing.
Product marketing
Image-to-video from a hero product photo holds packaging, colour and logo through the whole clip — no shape-shifting SKU halfway through an ad.
Short-form creators
Vertical 9:16 at 1080p for up to 15 seconds is native output, not a crop — enough runway for a full TikTok or Reels beat in a single render.
Brand & creative agencies
Six aspect ratios mean one concept can ship as a cinema cutdown, a feed post and a story without re-prompting from scratch.
Film & pre-vis teams
Keyframe mode blocks a camera move between two frames, which is usually enough to sell a shot before anyone books a crew.
Seedanceのサンプルプロンプト
このモデルで安定して高品質なレンダリングを生む実証済みパターン。
12-second continuous tracking shot: a chef seasons a copper pan, cracks an egg, flips it, plates it and slides it across the pass. Warm tungsten, 35mm, shallow depth of field.
効果的な理由： A four-beat sequence inside one 15-second pass — there is no seam to hide, so the action has to stay coherent from frame one.
[product photo] A 10-second hero drop: the bottle rises from a wet surface, the camera orbits 180°, light sweeps across the label and the logo settles before the cut.
効果的な理由： Image-to-video anchors the first frame on your real packaging, so the SKU does not drift while the camera moves.
[first frame: closed box] → [last frame: model holding the open box] An 8-second product-launch reveal, studio lighting, slow push-in.
効果的な理由： Keyframe mode defines where the shot starts and ends and interpolates the move in between — the cheapest way to pre-visualise a reveal.
Vertical 9:16, 10 seconds: a barista sets down a cup, steam curls up, they slide it toward the camera and step out of frame. Morning window light, handheld feel.
効果的な理由： Native vertical output with one slow action — exactly the format social edits need, without cropping a landscape render.
Seedanceで優れた出力を得る方法
- 01
Pick a version
Seedance 2.5 for 1080p and the widest ratio set; Seedance 2.0 for cost control, where you also choose a quality tier (Fast and Economy are text-to-video only).
- 02
Choose an input mode
Script only? Text-to-video. Need your exact product or a face locked? Image-to-video. Know the first and last frame? Keyframe mode interpolates the move between them.
- 03
Set duration, resolution and ratio
Renders are priced per second, so a 5s 480p draft costs a fraction of a 15s 1080p take. Draft short and small, then re-render the keeper at full spec.
- 04
Render and download
Jobs run in the background — you can leave the page and collect the MP4 from your dashboard. Output ships with a full commercial license: paid ads, e-commerce listings and client work.
Seedanceを選ばないほうが良い場合
正直な比較で、適切なモデルにブリーフを回せるようにします。
- Hyper-stylized anime — use Vidu Q2 or Pika.
- Pure text/typography animation — use a motion-graphics tool like Cavalry or After Effects.
- Feature-length (minutes) narrative — chain 15-second passes or fall back to MiniMax Hailuo for explainers.
Seedance — よくある質問
What’s the difference between Seedance 2.5 and 2.0?+
Resolution and tiers. 2.5 renders up to 15 seconds at 480p, 720p or 1080p and covers all three input modes. 2.0 caps at 720p but offers three quality tiers — High Quality (default, all input modes) plus cheaper Fast and Economy tiers that are text-to-video only. Both are live on ZNIX, and the availability panel above is generated from the same registry the composer uses.
Is Seedance 2.5 available on ZNIX?+
Yes — 2.5 is live on ZNIX today, alongside Seedance 2.0. You can queue a render on either version straight from the composer; the availability panel above lists both with their current resolutions and starting cost. Seedance 1.5 is not currently offered.
Is Seedance better than Sora?+
Sora is not offered on ZNIX, so it is not a like-for-like comparison here. Among the models ZNIX does run, Seedance is the strongest option for product and human-subject footage where the subject has to stay on-model for the whole clip.
Can I use Seedance output commercially?+
Yes. Every render on ZNIX ships with a full commercial license including paid ads, e-commerce listings and client work. No watermark, no attribution required.
How long does one render take?+
It scales with duration and resolution: a 5-second 480p draft returns fastest, while a 15-second 1080p take takes longer and is queue-dependent. Renders run in the background — you can close the page and download the result from your dashboard when it is ready.
Does Seedance support 4K?+
Check the live generator for supported output tiers. For an existing MP4, use Video Upscale and verify delivered dimensions; a requested scale does not guarantee 4K.
Which Seedance 2.0 quality tier should I use?+
High Quality is the default and the only tier that supports image-to-video and keyframe input, so use it whenever a reference has to stay on-model. Reserve Fast and Economy for text-prompt batch runs where you are scanning for a hook and cost per second matters more than polish.
Why does my output sometimes drift in the last two seconds?+
Diffusion video models lose temporal anchor the longer a clip runs. Shorten the take to 8–10 seconds, use image-to-video to lock the opening frame, or re-render at a higher quality tier — all three reduce drift without changing the prompt.
他のモデルと比較
Kuaishou’s Kling — fast, accessible video generation with separate T2V and I2V variants and excellent motion fluidity.
MiniMax’s Hailuo line — long-form coherent video with strong prompt adherence, ideal for narrative shorts and explainers.
MiniMax’s H3 Max — open-weights flagship with native stereo audio and cinematic long-form video up to 768p.
Alibaba’s Wan — versatile open-source video model with three variants (T2V, I2V, Keyframe) for full creative control.
What runs on ZNIX today
Availability and starting prices below are read from the same model registry the composer queues against — not from a marketing sheet.
| Model | What you can render | From |
|---|---|---|
Seedance 2.5 Available now | 480p / 720p / 1080p · up to 30s · T2V · I2V · Keyframe | 610 credits ~$6.10 |
Seedance 2.0 Available now | 480p / 720p · up to 15s · T2V · I2V · Keyframe Quality tiers: High Quality (default) · Fast · Economy — Fast and Economy text-to-video only | 525 credits High Quality default · ~$5.25 |
Not currently offered on ZNIX: Seedance 1.5
This panel is generated per request: if a version is switched off upstream, it disappears from this table and from the composer at the same time.