Seedance 2.0 Fast - Text to Video

Text-to-video generation with Seedance 2.0 Fast by ByteDance, including native audio in every clip.

Write a prompt describing your scene, hit run, and get back a video with synchronized sound effects, music, or dialogue baked in. No separate audio step. The Fast tier trades a small amount of quality for quicker generation and lower cost compared to the standard Seedance 2.0 endpoint.

Supports 720p output, durations from 5 to 10 seconds, and six aspect ratios.

How do you generate video from text with Seedance 2.0 Fast?

Write a detailed prompt describing your scene, set your resolution, duration, and aspect ratio, then run the workflow. Seedance 2.0 Fast generates a video with native audio in a single pass. The model handles camera movements, multi-subject interactions, and lip-synced dialogue if you include speech in quotes.

Prompt Describe exactly what you want to see. Include camera direction (tracking shot, dolly zoom, POV), lighting, mood, and specific actions. For dialogue, put the spoken words in double quotes inside your prompt. The more specific you are about movement and framing, the better the result.

Resolution Default is 720p. You can also drop to 480p for faster iteration when you're still dialing in the prompt.

Duration Choose between 5 and 10 seconds. Want a quick social clip or a test run? Go with 5. Need a longer scene with more room for action? Set it to 10.

Aspect Ratio Six options: 21:9, 16:9, 4:3, 1:1, 3:4, and 9:16. Shooting for YouTube or widescreen? 16:9. Instagram Reels or TikTok? 9:16. Cinematic letterbox? 21:9.

Generate Audio On by default. The model generates sound effects, ambient audio, music, and dialogue with lip sync alongside the video. Turn it off if you plan to add your own audio track in post.

Seed Set to randomize by default. Lock the seed to reproduce the same result or compare small prompt changes side by side.

What is Seedance 2.0 Fast good for?

Seedance 2.0 Fast is built for production teams and creators who need to iterate on video ideas without waiting. It generates cinematic clips with native audio at a lower cost per second than the standard endpoint, making it ideal for drafts, social content, and rapid prototyping.

Product videos, social media clips, short ads, music video concepts, and storyboard pre-visualization all work well here. The model handles complex camera moves, physical interactions, and multi-subject scenes better than most text-to-video options.

The tradeoff: Fast prioritizes speed over maximum fidelity. If you need the highest possible output quality and have more time, the standard Seedance 2.0 endpoint is the better pick. For most social and web content, Fast is more than enough.

This workflow also includes disconnected nodes for the standard Seedance 2.0 text-to-video endpoint and an image-to-video node. You can wire those up if you need full-quality generation or want to animate a still image instead.

FAQ

What aspect ratios does Seedance 2.0 Fast support? Six options: 21:9, 16:9, 4:3, 1:1, 3:4, and 9:16. Pick one that matches your target platform. The model adjusts composition automatically so your subject stays framed correctly.

Does Seedance 2.0 generate audio with the video? Yes. Audio is generated natively in the same pass as the video. This includes sound effects, ambient sound, music, and lip-synced dialogue. No post-production audio layering needed.

What is the difference between Seedance 2.0 Fast and standard? Fast generates clips with lower latency and at a lower cost per second. Standard prioritizes maximum visual quality. For quick iterations, social content, and drafts, Fast is the right choice. For final hero shots, switch to standard.

How do I get good results from Seedance 2.0 text-to-video prompts? Be specific. Describe camera movement, lighting, mood, and individual actions. Instead of "a man walking," write "a man in a grey coat walks toward camera on a rain-slicked street, shallow depth of field, handheld tracking shot." For dialogue, wrap speech in double quotes.

How to run Seedance 2.0 Fast online? You can run Seedance 2.0 Fast online through Floyo. No installation, no setup. Open the workflow in your browser, upload your inputs, and hit run. Free to try.