bytedance/seedance-2.0 🔢🖼️📝❓✓ → 🖼️

⭐ Official ▶️ 1.1M runs 📅 Apr 2026 ⚙️ Cog 0.21.0

audio-to-video image-to-video-with-audio lipsync text-to-video-with-audio video-consistent-character-generation video-continuation video-editing

Performance

115.0sTypical run time

1.1MTotal runs

About

ByteDance's multimodal video generation model with native audio, multimodal reference inputs, and intelligent duration control.

Example Output

Prompt:

"A cozy cabin in a snowy forest at night, warm light glowing from the windows, gentle snowfall, camera slowly pushing in through the trees"

Output

Performance Metrics

114.97s Prediction Time

115.00s Total Time

All Input Parameters

{
  "seed": 99,
  "prompt": "A cozy cabin in a snowy forest at night, warm light glowing from the windows, gentle snowfall, camera slowly pushing in through the trees",
  "duration": 7,
  "resolution": "720p",
  "aspect_ratio": "16:9",
  "generate_audio": true
}

Input Parameters

seed Type: integerDefault: null: Random seed. Set for reproducible generation.
image Type: stringDefault: null: Input image for image-to-video generation (first frame). Cannot be combined with reference images.
prompt (required) Type: string: Text prompt for video generation. Maximum 4000 characters. BytePlus recommends keeping prompts under 600 English words for best results.
duration Type: integerDefault: 5Range: -1 - 15: Video duration in seconds. Set to -1 for intelligent duration (model picks the best length).
resolution Default: 720p: Video resolution. 4K outputs 10-bit H.265/HEVC at high bitrate.
aspect_ratio Default: 16:9: Video aspect ratio. Set to 'adaptive' to let the model choose the best ratio based on inputs.
generate_audio Type: booleanDefault: true: Generate synchronized audio with the video, including dialogue (use double quotes in prompt), sound effects, and background music.
last_frame_image Type: stringDefault: null: Input image for last frame generation. Only works if a first frame image is also provided. Cannot be combined with reference images.
reference_audios Type: arrayDefault:: Reference audio files (up to 3, total duration max 15s) for audio-driven generation and lip-sync. Requires at least one reference image or video. Reference them in your prompt as [Audio1], [Audio2], etc.
reference_images Type: arrayDefault:: Reference images (up to 9) for character consistency, style guidance, and scene composition. Cannot be used together with first/last frame images. You can reference them in your prompt as [Image1], [Image2], etc.
reference_videos Type: arrayDefault:: Reference videos (up to 3, total duration max 15s) for motion transfer, style reference, and editing. Reference them in your prompt as [Video1], [Video2], etc.

Output Schema

Output

Type: string • Format: uri

Example Execution Logs

Using seed: 99
Generating video...
Generated video in 111.7sec
Downloading 2682088 bytes
Downloaded 2.56MB in 2.74sec

Version Details

Version ID: a6dcbae88b153e75fcccabacfb0eb430ab5be0a7ae27b316fc6f983658b349bc
Version Created: June 23, 2026

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