Bytedance Seedance V1 Lite I2V 720p

Bytedance Seedance V1 Lite I2V 720p

Playground

ByteDance Seedance Lite i2v 720p creates coherent multi-shot image-to-video clips with smooth, stable motion and prompt fidelity. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.

Features

Seedance v1 Lite I2V 720p — bytedance/seedance-v1-lite-i2v-720p

Seedance v1 Lite I2V 720p generates short videos from a single reference image plus a motion-focused prompt. Upload a starting image, describe what happens (subject action + camera behavior), and the model animates the scene while keeping the input image as the visual anchor. You can also provide an optional last_image to better control how the clip ends.

Key capabilities

• Image-to-video generation anchored to a reference image (720p output)
• Optional last_image for smoother ending continuity and better narrative “landing”
• Prompt-controlled motion (character actions, environmental effects, camera beats)
• Optional camera_fixed mode when you want motion without camera movement

Use cases

• Character animation from a single keyframe (actions, expressions, subtle body motion)
• Short story beats for trailers, storyboards, and concept previews
• Product or object animation with controlled motion and stable framing
• Start-to-end guided shots using last_image for more predictable outcomes

Pricing

Inputs

• image (required): starting reference image (first-frame anchor)
• prompt (required): motion and scene direction
• last_image (optional): end-frame reference to guide the finishing state

Parameters

• prompt: describes subject action, environment motion, and camera direction
• image: input image (upload or URL)
• last_image: optional end reference image (upload or URL)
• duration: video length in seconds
• aspect_ratio: output aspect ratio selection
• camera_fixed: whether to lock the camera position
• seed: random seed (-1 for random; fixed value for reproducible results)
• safety checker: enabled filtering for safer generations (if available in your UI)

Prompting guide (I2V)

Write prompts like a director’s beat sheet:

• Subject action: what changes over time (stands up, looks around, runs forward, picks up an item)
• Camera: close-up, push-in, follow, orbit, rack focus (or keep it fixed)
• Environment: wind, fog, particles, light effects, background motion
• Continuity: explicitly say what must remain consistent (identity, colors, scene layout)

Example prompts

• A fox stands up and looks around, then runs forward and finds a glowing gem. Close-up of the fox picking up the jewel, cinematic lighting, gentle snow particles, smooth motion.
• A hero product on a table. Slow push-in, subtle highlight movement across the surface, light dust motes, clean studio look, camera_fixed enabled.
• A character turns toward the camera and smiles. Hair sways lightly in the wind, warm sunset backlight, shallow depth of field, natural motion.

# Submit the task
curl --location --request POST "https://api.wavespeed.ai/api/v3/bytedance/seedance-v1-lite-i2v-720p" \
--header "Content-Type: application/json" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}" \
--data-raw '{
    "duration": 5,
    "camera_fixed": false,
    "seed": -1
}'

# Get the result
curl --location --request GET "https://api.wavespeed.ai/api/v3/predictions/${requestId}/result" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}"