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Seedance 1.5 Pro (I2V)

Previous-gen Seedance 1.5 Pro image-to-video with director-level controls.

Open in Video Lab Browse all models~33 credits per run

Seedance guideVerified

ByteDance's video lines. Three generations live in our catalog: v1.5 Pro (cinematic motion), Pro/Lite (cost tiers), and Seedance 2.0 (the new sd-2-* family with native audio sync).

Strengths

Tightest scene composition of the major video brands — clean framing, balanced negative space.
Cinematic motion: slow camera reveals, parallax, atmospheric drift look natural.
Seedance 2.0 (sd-2-*) adds native audio/video sync — voices, footsteps, ambient sound.
VIP tier on Seedance 2 unlocks 1080p output and longer durations.
Reference-to-video mode (lite-reference-video, sd-2-omni-reference) blends 1–4 reference images cleanly.

Weaknesses

Lite tier is noticeably softer than Pro — fine for drafts, not finals.
Some sd-2-* variants (Omni Reference No Video) actually output stills, not video — read the model name carefully.
Less explosive action than Kling — Seedance leans contemplative.

Best for

Atmospheric establishing shots, slow reveals, cinematic landscape
Product motion shots — bottles spinning, fabric draping, water pours
Story beats that need controlled motion rather than chaos
Reference-driven character / location consistency

Avoid for

High-energy action — Kling wins there
Text-heavy frames

Prompting tips

Describe the camera move FIRST, then the subject — Seedance's motion engine leads with composition.
Use "slow", "gentle", "glide" verbs for motion — Seedance interprets restraint better than chaos.
Mention specific time of day ("dusk", "golden hour", "twilight") — Seedance's lighting engine handles them well.
For sd-2 (Seedance 2.0): explicit audio cues in the prompt ("footsteps echo", "distant thunder") engage the audio sync.

Parameter tips

camera_fixed: ON for product shots / stable framings. OFF for cinematic motion.
generate_audio (sd-2): ON for finals with ambient sound, OFF for drafts to save cost.
Resolution: 720p is the practical default; 1080p (VIP) on hero shots only.

Parameters

end_image_url
string
The URL of the image the video ends with. Defaults to None.
seed
int
Random seed to control video generation. Use -1 for random.
image_url
string
The URL of the image used to generate video
aspect_ratio
string
The aspect ratio of the generated video
21:916:94:31:13:49:16auto
default: 16:9
resolution
string
Video resolution - 480p for faster generation, 720p for balance, 1080p for higher quality
480p720p1080p
default: 720p
generate_audio
boolean
Whether to generate audio for the video
default: true
duration
string
Duration of the video in seconds
456789101112
default: 5
camera_fixed
boolean
Whether to fix the camera position
default: false
enable_safety_checker
boolean
No description.
default: true

You'll need

A text prompt
Start frame
End frameoptional

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