Introducing ByteDance Seedance 2.0 Fast Video Edit on WaveSpeedAI
Seedance 2.0 Fast (Video-Edit) edits an input video from a natural-language prompt at a faster, cheaper tier. Built on ByteDance Seed's unified multimodal archi
Seedance 2.0 Fast Video-Edit: Natural-Language Video Editing at a Faster, Cheaper Tier
ByteDance’s Seedance 2.0 Fast Video-Edit brings conversational video editing to production teams who need quick turnarounds without sacrificing quality. This video-to-video model lets you rewrite lighting, weather, style, environment, or specific elements in any input clip using nothing but a natural-language prompt — all while preserving subject identity, composition, and motion.
For creators, marketers, and developers who want the same intelligent editing capability as the standard Seedance 2.0 Video-Edit but at roughly 19% lower cost per second, the Fast tier hits the sweet spot between performance and price. Try it now on WaveSpeedAI.
How Seedance 2.0 Fast Video-Edit Works
Seedance 2.0 Fast Video-Edit is built on ByteDance Seed’s unified multimodal architecture, the same foundation that powers the broader Seedance 2.0 family. Instead of treating video editing as a frame-by-frame pipeline, the model interprets your prompt in the context of the entire clip and rewrites the scene while keeping the original motion vectors, faces, and camera movement intact.
The workflow is simple:
- Input: a source video (anything over 15 seconds is trimmed to the first 15 s) and a plain-language edit prompt
- Optional inputs: reference images for style or character identity, reference audio for soundtrack guidance
- Output: an edited video with synchronized native audio in a single pass
Supported resolutions are 480p, 720p (default), and 1080p, with aspect ratios covering 16:9, 9:16, 4:3, 3:4, 1:1, and 21:9. Output duration is configurable from 4 to 15 seconds, auto-detected from the input if not specified. The model also supports enable_web_search for real-time contextual edits — useful when prompts reference current events or specific brand styles.
What makes it different from older video-to-video pipelines: there’s no need to mask, segment, or rotoscope. You describe what you want, and the model figures out which pixels to change.
Key Features of Seedance 2.0 Fast Video-Edit
- Conversational editing in plain language — Describe the change (“make it golden hour”, “change the car to red”, “add heavy rain”) and the model rewrites the scene without breaking the underlying motion.
- Subject and motion preservation — Faces, hand movements, object trajectories, and camera pans from the source video stay consistent throughout the edit.
- Multi-reference support — Pass reference images to lock down character identity or visual style, and reference audio to constrain the soundtrack.
- Native audio synchronization — Audio is generated and synced in the same pass as the visuals, eliminating a separate post-production step.
- ~19% cheaper than the standard tier — Same architecture, lower price at every resolution, making it production-viable for high-volume workflows.
- No cold starts on WaveSpeedAI — Inference begins immediately on first call; no warmup penalty for sporadic usage.
Best Use Cases for Seedance 2.0 Fast Video-Edit
Localized Ad Variants at Scale
A single product video can be re-styled for dozens of regional campaigns — switch the weather to match local seasons, change the environment from urban to rural, or swap signage language. Marketing teams can ship 20+ ad variants from one source asset in an afternoon.
Social Media Content Repurposing
Take an existing 15-second clip and generate platform-tailored variants: a moody sunset cut for Instagram, a bright daytime version for TikTok, a vertical 9:16 reframe for Reels. Subject and motion stay consistent so the brand message doesn’t drift across channels.
Music Video and Stylization Workflows
Independent creators can shoot once and re-render the same performance across multiple aesthetics — anime, cyberpunk, film noir, watercolor — by changing only the prompt. Reference images keep the artist’s identity stable across stylized variants.
Real Estate and Architectural Walkthroughs
Convert a daytime property tour into evening, twilight, or rainy-day variants without re-shooting. Useful for listings that want to show a space across different moods or for architectural pitches that need quick “what-if” environment swaps.
E-commerce Product Demonstrations
Re-light, re-color, or re-environment a single product demo to match different campaign themes. A handbag filmed in a studio can appear on a beach, in a snowy alpine setting, or under neon city lights — without the cost of additional shoots.
Pre-visualization for Film and Animation
Directors and storyboard artists can iterate on lighting, weather, and environment changes before committing to expensive reshoots or VFX work. The Fast tier’s lower price makes rapid pre-vis cycles affordable.
Content Localization for Global Releases
Adapt video content for different cultural contexts — change architectural details, signage, or environmental cues to feel native in each target market while preserving the original performance and dialogue.
Seedance 2.0 Fast Video-Edit Pricing and API Access
Pricing is billed per second across input duration + output duration. Inputs are clamped to the 2-15 s range (shorter sources are padded with the last frame).
| Resolution | Per second | 5s in / 5s out | 12s in / 12s out |
|---|---|---|---|
| 480p | $0.065 | $0.65 | $1.56 |
| 720p | $0.13 | $1.30 | $3.12 |
| 1080p | $0.325 | $3.25 | $7.80 |
That’s roughly 19% below the standard Seedance 2.0 Video-Edit at every resolution — a meaningful margin when you’re rendering hundreds of variants.
API Example
import wavespeed
output = wavespeed.run(
"bytedance/seedance-2.0-fast/video-edit",
{
"prompt": "Change the scene to a heavy rainstorm at night with neon reflections on wet pavement",
"video": "https://example.com/source-clip.mp4",
"resolution": "720p",
"duration": 8,
},
)
print(output["outputs"][0])The prefix Edit the input video. is added automatically — you only need to write the change you want. WaveSpeedAI delivers this through a ready-to-use REST API with no cold starts, pay-per-use billing, and consistent latency across regions.
Tips for Best Results with Seedance 2.0 Fast Video-Edit
- Be specific about what to change and what to keep. “Change the lighting to golden hour but keep the subject’s clothing the same” works better than “make it warmer”.
- Use reference images for character consistency. When editing across multiple clips of the same person, pass a reference image to lock identity.
- Match the prompt tone to the desired output. Cinematic prompts (“shallow depth of field, anamorphic lens flare”) yield more polished looks than generic adjectives.
- Start at 720p for iteration. Test prompts at the default resolution, then re-render finals at 1080p only when you’re happy with the direction.
- Trim source clips before upload. Anything over 15 seconds is auto-trimmed; pre-cutting your source ensures you control which 15 seconds the model sees.
- Use reference audio for tone, not exact replication. The model uses audio references as guidance, not as a literal track to overlay.
If you need text-to-video or image-to-video instead of editing existing footage, check out Seedance 2.0 Fast Text-to-Video and Seedance 2.0 Fast Image-to-Video.
FAQ
What is Seedance 2.0 Fast Video-Edit?
Seedance 2.0 Fast Video-Edit is ByteDance’s faster, cheaper tier of natural-language video editing. It takes an input video and a text prompt and rewrites lighting, style, weather, environment, or specific elements while preserving the original subject identity, composition, and motion.
How much does Seedance 2.0 Fast Video-Edit cost?
Pricing is per second of input duration + output duration: $0.065/s at 480p, $0.13/s at 720p, and $0.325/s at 1080p. A typical 5-second input with 5-second output at 720p costs $1.30. That’s roughly 19% cheaper than the standard Seedance 2.0 Video-Edit tier.
Can I use Seedance 2.0 Fast Video-Edit via API?
Yes. WaveSpeedAI provides a ready-to-use REST API with no cold starts and pay-per-use billing. Call the model at bytedance/seedance-2.0-fast/video-edit with a prompt and video URL — optional parameters include resolution, duration, aspect_ratio, and reference images or audio.
Does Seedance 2.0 Fast Video-Edit preserve faces and motion?
Yes — preserving subject identity, composition, and the original camera and subject motion is one of the model’s core design goals. Faces, object trajectories, and camera moves stay consistent through edits to lighting, weather, style, or environment.
What’s the maximum video length for Seedance 2.0 Fast Video-Edit?
The model accepts inputs up to 15 seconds; longer videos are automatically trimmed to the first 15 s. Inputs shorter than 2 s are padded with the last frame. Output duration is configurable from 4 to 15 seconds and auto-detected from the input if not specified.
Start Editing Videos with Seedance 2.0 Fast Today
Conversational video editing at a price that scales — that’s what Seedance 2.0 Fast Video-Edit delivers. Whether you’re producing localized ad variants, repurposing social content, or pre-visualizing film shots, the Fast tier gives you the same multimodal intelligence as the standard model at roughly 19% lower cost. Try it now on WaveSpeedAI.