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Cinematic video and synchronized audio in a single pass — dialogue, lip sync, and score included.
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Seedance 1.5 Pro comes from ByteDance's Seed research team, built as a dual-branch model that renders video frames and the audio waveform in one shared generation — so sound isn't added after the fact, it's created with the picture. Inside SpaceMotion's AI Toolkit it sits alongside Veo, Sora, Kling and Flux, so your concept, photo and video work all live in a single workspace.
Seedance 1.5 Pro is built for sounded video — multilingual dialogue with lip sync generated alongside the frames, 4–12 second clips in seven aspect ratios, up to 1080p, from text or a starting image.
Picture and sound in one pass.
Seedance 1.5 Pro renders video and audio together in the same generation — multilingual dialogue with synchronized lip movement, foley, ambience, and score. No dubbing, no audio layering, no post-production.
Start from words or a frame.
Describe a scene in plain language, or upload an image as the first frame and Seedance animates it — same engine, same synchronized audio, whichever way you start.
4–12 seconds, seven ratios.
Any whole-second duration from 4 to 12, in seven aspect ratios from ultrawide 21:9 to vertical 9:16 — plus an adaptive mode that matches your input image's framing.
Production-grade frames.
Generate at 480p for fast drafts or push to full 1080p at 24fps for deliverables, with prompt-driven camera moves — pans, dollies, orbits, and tracking shots.
Seedance 1.5 Pro is ByteDance's audio-video generation model, released in December 2025. It generates cinematic video and synchronized audio together in a single pass — multilingual dialogue with lip sync, sound effects, ambience, and music — from a text prompt or a starting image.
The model generates the soundtrack and the picture jointly, so audio is synchronized to the frame — including lip movement matched to spoken dialogue. Write dialogue in quotes inside your prompt and describe the sounds you want; everything renders in one generation.
Clips run any whole-second length from 4 to 12 seconds, at 480p, 720p, or 1080p (24fps). Seven aspect ratios are supported — 16:9, 9:16, 1:1, 4:3, 3:4, 21:9, and adaptive, which matches the framing of your input image.
Yes. Upload an image and Seedance 1.5 Pro uses it as the first frame, generating the motion and audio around it. Without an image it works as pure text-to-video.
The headline change is audio: Seedance 1.0 generated silent video, while 1.5 Pro renders synchronized sound — dialogue with lip sync, effects, and score — in the same pass. It's also significantly cheaper per clip at comparable quality.
Seedance 2.0 is the next generation: it accepts images, video, and audio clips as references (up to 12 files), adds multi-shot editing with real cuts, stronger physics, and clips up to 15 seconds. Seedance 1.5 Pro remains the fast, economical choice for single-shot clips with native audio.
Dialogue-driven short-form content — UGC-style ads, talking characters, short dramas, and social clips where synchronized sound matters. The joint audio-video pass means what you download is ready to post.
You can try Seedance 1.5 Pro on SpaceMotion's Free plan, which includes 10 credits per month. Free-plan outputs include a watermark and are for personal use. Paid plans include commercial licensing and more credits — see the Pricing page for details.
Join thousands of creators generating sounded video with Seedance 1.5 Pro.
Start creating sounded video with Seedance 1.5 Pro inside SpaceMotion's AI Toolkit.
Describe the scene, camera, and any dialogue — put spoken lines in quotes. Optionally upload an image as the first frame.
Choose 4–12 seconds, one of seven aspect ratios, and 480p, 720p, or 1080p to match where the video will run.
Seedance renders the clip with synchronized audio in one pass. Download and publish — no post-production.
Not sure if Seedance 1.5 Pro is the right model for your projects? Compare Seedance 1.5 Pro vs Seedance 2.0 and Seedance 1.0 to see which ByteDance video model fits your workflow.
The audio-video workhorse. Text- or image-to-video with multilingual dialogue, lip sync, and score generated in the same pass — 4–12 seconds, up to 1080p, seven aspect ratios. Pick this for feed-ready clips with sound.
ByteDance's flagship generation. Feed it reference images, video, and audio clips and it builds multi-shot video around them — real cuts, director-level camera work, physics-accurate motion, 4–15 second clips.
More on Seedance 2.0The June 2025 original that topped video-generation leaderboards at launch. Text- or image-to-video with multi-shot storytelling, up to 1080p — silent output, before native audio arrived in 1.5 Pro.
From social creators to short-drama producers, Seedance 1.5 Pro is for anyone whose video needs sound.
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Post-ready vertical clips with dialogue and sound baked in — no editing app, no audio pass.
UGC-style ads with spoken lines and lip sync, iterated in minutes instead of shoot days.
Talking characters with synchronized performances — write the dialogue, get the scene.
Animate product stills into sounded video with a first-frame upload.
Narrated visual content generated in one pass — picture and voice together.
Fast motion with matching crowd noise, impacts, and atmosphere.
Generate your first clip with dialogue and sound — free to try.
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With AudioBest price on market for generations on the best AI models
