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Seedance 1.5 Pro — AI Video with Native Audio-Visual Sync

Seedance 1.5 Pro, launched by ByteDance in December 2025, was the first Seedance model to generate sound and picture together. Dialogue, music and effects stay aligned with the action, with millisecond-precise lip sync.

  • ByteDance Seedance 1.5 Pro
  • Native audio with lip sync
  • First and last frame control
  • 480p to 1080p, 6 ratios
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Why Seedance 1.5 Pro Is a Great AI Video Generator

Seedance 1.5 Pro is a proven, affordable choice for talking scenes and music-driven clips. It is cheaper than Seedance 2.0 and still delivers cinematic motion with synchronized sound.

  • Audio and video together

    ByteDance built 1.5 Pro as a joint audio-visual model, so sound is not an afterthought.

  • Precise lip sync

    Dialogue lines up with mouth movement down to the millisecond.

  • Frame control

    Set a first frame, or both first and last frames, to control the transition.

  • Good value

    Costs less than Seedance 2.0 for everyday clips.

What Seedance 1.5 Pro can do

  • Text to video

    Describe the scene, dialogue and sound.

  • First / last frame

    Upload one or two images to define how the clip starts and ends.

  • Wide ratio range

    From 21:9 cinema to 9:16 vertical.

  • 4–12-second clips

    Pick a length from 4 to 12 seconds, with sound generated in the same pass; audio can be switched off.

  • 480p, 720p and 1080p output

    Choose 480p, 720p and 1080p in 6 aspect ratios: 21:9, 16:9, 4:3, 1:1, 3:4 and 9:16.

  • Reference inputs

    Besides a text prompt you can add a first frame and an optional last frame.

Use cases

Starting points you can copy into the generator above.

Use caseGood forExample prompt
Talking headsA presenter speaking to camera.

A news presenter in a bright studio looks into the camera and says "Here are today's top stories." Subtle studio hum

Music momentsClips that move with music.

A street dancer pops and locks under a bridge at dusk, bass-heavy hip-hop beat, echoing claps

Before and afterA transition between two frames.

Smooth transition from the empty room in the first frame to the fully furnished room in the last frame, gentle whoosh

Cinematic shortsWide 21:9 scenes.

21:9 wide shot of a cowboy riding across a desert at sunset, dust trailing, distant thunder

Seedance 1.5 Pro in 3 steps

  1. 1

    Describe the shot or add a frame

    Write what happens, how the camera moves and how it should sound. Add a start image or references to lock the look.

  2. 2

    Pick length, resolution and ratio

    Set duration, resolution and aspect ratio and whether to generate audio. The credit cost is shown before you submit.

  3. 3

    Generate and keep your results

    Videos appear in the generator and are saved to My works. Anything that fails is refunded automatically.

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Frequently asked questions

It generates audio and video jointly, with millisecond-precise lip sync, so speech, music and sound effects stay aligned with the picture.

Ready to Animate with Seedance 1.5 Pro?

Budget-friendly 1080p clips up to 12 seconds, with first/last frames and audio.

Explore All Models
  • Clips up to 12s
  • Native audio
  • Failed outputs refunded