Seedance 1.5 Pro
ByteDance's Seedance 1.5 Pro generates up to 12 seconds of video in six aspect ratios with optional audio. The most format-flexible model in the Seedance family.
What is Seedance 1.5 Pro?
Seedance 1.5 Pro is ByteDance's latest video generation model in the Seedance line. As the "1.5" designation suggests, it's an iteration over the original Seedance 1 Pro with improvements in output quality, motion coherence, and expanded format support.
The six aspect ratio support is a standout feature — covering landscape (16:9), portrait (9:16), square (1:1), and additional ratios that make it adaptable to diverse content platforms and placements. Combined with up to 12 seconds of clip duration and optional audio, it's a complete tool for multi-platform content production.
ByteDance's expertise in short-form video — through platforms like TikTok — informs the model's output character. Seedance 1.5 Pro produces fluid, engaging motion that suits the pacing expectations of social video audiences, making it particularly well-suited for content teams targeting those platforms.
6 aspect ratios
Cover every platform format
Up to 12 seconds
Extended scene duration
Optional audio
AI audio in same pass
1080p quality
Full HD cinematic output
How to generate video with Seedance 1.5 Pro on project.video
Open the composer
Go to your project.video dashboard and open the generation composer. Seedance 1.5 Pro is listed under ByteDance models.
Select Seedance 1.5 Pro
Choose Seedance 1.5 Pro for extended duration, audio, and format-flexible production needs. Compare with Seedance 1 Pro using the same prompt.
Choose your aspect ratio
Select from the 6 available ratios to match your target platform. 9:16 for TikTok and Reels, 16:9 for YouTube, 1:1 for Instagram feed, and more.
Set duration, toggle audio, generate
Choose duration up to 12 seconds and toggle audio if needed. Write your prompt and generate — results arrive in your gallery.
Technical specs
Best use cases
Multi-platform social content
Generate the same content concept in 16:9, 9:16, and 1:1 from one session. Six aspect ratios means you can cover TikTok, Instagram, YouTube, and LinkedIn formats without switching models.
Short-form with audio
Produce short social clips complete with AI-generated audio in a single pass. For TikTok and Reels workflows where audio is essential to the content format, Seedance 1.5 Pro removes the audio sourcing step.
Extended product demonstrations
At 12 seconds with 1080p output, Seedance 1.5 Pro is suited for extended product showcase clips — more runtime than the 4–8 second range of shorter-format models.
Content-at-scale production
ByteDance's understanding of short-form video at scale informs this model's output. For teams producing high volumes of social content, Seedance 1.5 Pro combines quality, duration, and format flexibility in one model.
Example prompts
Copy any of these to get started on project.video.
"Street food vendor serves a bowl of ramen under warm paper lantern light on a busy Tokyo side street at night, steam rising, chopsticks in motion, ambient street audio, 9:16"
"Athletic brand moment: runner breaks through a finish line tape in slow motion, crowd blur behind, golden late afternoon backlight, vertical social format, 9:16"
"Skincare product — hands apply serum, close-up on texture and glow, soft diffused studio light, clean white background, 1:1 square for Instagram feed"