ByteDanceSeedance 1.5 Pro
Generate 12-second videos with native audio, multilingual speech, and fast turnaround from 45 seconds to 3 minutes.
- Max Duration
- 12 seconds max
- Resolution
- 480p, 720p, 1080p
- Aspect Ratios
- 16:9, 9:16, 1:1
- Audio
- Native audio
What makes Seedance 1.5 Pro unique
Native audio generation
Create video and sound together in one render
7+ language support
Useful for multilingual campaigns and region-specific social content
Fast generation times
Typical renders land in about 45 seconds to 3 minutes
Flexible resolutions
Choose 480p, 720p, or 1080p depending on speed and output needs
Dual-branch architecture
Designed to balance visual generation and audio-aware output
12-second max length
Long enough for punchy ads, explainers, and short scenes
Where it falls short
- –480p previews are noticeably soft — treat them as layout checks only
- –English audio quality is behind Mandarin — it was trained primarily on Chinese content
- –12-second max is shorter than Kling 3.0 or Sora 2
- –Prompt adherence drops on highly specific camera direction
Best for
Prompt tips
- 1.
If you're using another language, write the spoken line exactly as it should be said. Don't summarize it and hope the model fills it in.
- 2.
Use 480p or 720p for testing ideas fast, then move to 1080p once the scene is working.
- 3.
Keep the scene count low. One strong setup usually performs better than trying to cram three locations into 12 seconds.
- 4.
Call out the sound bed. Music style, room tone, street noise, or crowd ambience helps the clip feel less empty.
How Seedance 1.5 Pro works
Enter a prompt with the scene, spoken content, and sound cues, then choose your aspect ratio and resolution. SEEDANCE 1.5 PRO renders up to 12 seconds of video with native audio, usually within 45 seconds to 3 minutes depending on settings and complexity.
How to use on Flashloop
Select Seedance 1.5 Pro
Open Flashloop and choose Seedance 1.5 Pro from the model selector in the video creator.
Write your prompt
Describe what you want to see in your video — be as detailed as you like.
Generate & download
Hit generate and your video will be ready in seconds. Download or share directly.
Frequently asked questions
Yes. It includes native audio, so you can generate the video and sound together instead of building them separately.
Up to 12 seconds. That is a good fit for short promos, social clips, and quick concept videos.
It supports 480p, 720p, and 1080p. Lower resolutions are useful for fast testing, while 1080p is better for final exports.
Most generations take about 45 seconds to 3 minutes. The exact time depends on the resolution, prompt complexity, and current queue.
It supports 7 or more languages. That makes it a good option when you need to test the same concept across multiple regions.
It is best for fast, voice-led short videos. Think multilingual social posts, ad variations, explainers, and quick-turn concept work.
Other video models
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Google DeepMindVeo 3
Generate 8-second videos with native dialogue, sound effects, and ambient audio in one pass.
KuaishouKling 3.0
Create up to 15-second multi-shot videos with character consistency, 4K 60fps support, and bilingual audio.
KuaishouKling 2.6
Turn images into 10-second 1080p videos with 48fps motion control and native speaking, singing, or rapping audio.
Ready to create with Seedance 1.5 Pro?
Available on iOS, Android, and web.
Start Creating