Bytedance Seedance V1.5 Pro Text To Video Fast

Bytedance Seedance V1.5 Pro Text To Video Fast

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Seedance 1.5 Pro Fast (Text-to-Video) converts text prompts into cinematic, live-action-leaning videos with strong prompt adherence, expressive yet stable motion, and consistent aesthetics. It supports 4–12s duration control, multiple aspect ratios (9:16, 1:1, 16:9), and 720p/1080p output with seed-reproducible results—ideal for ads, trailers, and short-drama beats. Built for stable production use with a ready-to-use REST API, no cold starts, and predictable pricing.

Features

ByteDance Seedance V1.5 Pro Text-to-Video Fast

Seedance V1.5 Pro Text-to-Video Fast is ByteDance’s production-oriented text-to-video model on WaveSpeedAI. It generates short, cinematic clips from a single natural-language prompt with strong prompt adherence and expressive motion, optimized for fast iteration across common aspect ratios.

Key capabilities

• Text-to-video generation from one prompt for fast concept-to-clip workflows
• Strong prompt adherence for subject, action, environment, lighting, and mood
• Expressive motion with stable aesthetics suited to cinematic short-form outputs
• Aspect ratio options for vertical, square, and widescreen delivery
• Optional audio generation with a simple toggle
• Seed control for reproducible iterations and controlled variations

Parameters

How to use

1. Write a clear prompt describing the subject, action, and scene.

2. Choose an aspect_ratio that matches your target platform (9:16 for shorts, 16:9 for YouTube, 1:1 for feeds).

3. Set duration (start short for iteration, then increase once you like the look).

4. Pick resolution:

   • 720p for faster drafts
   • 1080p for final output detail

5. Toggle generate_audio on if you want sound included, or off if you’ll add audio in post.

6. Use camera_fixed if you want a locked shot and less framing drift.

7. Set seed for reproducible reruns, or keep -1 for fresh variations.

Prompt tips

Write prompts like a director’s brief:

• Subject: who/what is on screen
• Action: what happens next (use clear verbs)
• Scene: where it happens + time + lighting
• Camera: framing and movement (only if needed)
• Style: mood and visual language (optional)

Practical tips:

• Prefer simple, direct sentences first. Add detail only when you need tighter control.
• This workflow works best with positive instructions (describe what you want, not long avoid-lists).
• If you want stronger motion, use intensity words like subtle, energetic, rapid, slow, high energy.
• For multi-step actions, list them in order: walks in → pauses → looks up → smiles.

Pricing

Effective rates

Example costs

Notes

• Start with 720p and shorter duration for quick iteration, then switch to 1080p for finals.
• If framing drifts, try camera_fixed = true and move the action onto the subject instead of the camera.
• Keeping the same seed makes small prompt changes easier to compare.

Related Models

• Seedance V1.5 Pro (Text-to-Video) — Non-fast variant for steadier outputs when speed is less critical.
• Seedance V1 Pro Fast (Text-to-Video) — Fast alternative for rapid previews and lightweight iteration.
• HunyuanVideo-1.5 (Text-to-Video) — Efficient T2V model with strong motion coherence for cost-effective generation.
• Alibaba Wan 2.5 (Text-to-Video Fast) — Fast T2V option for broad style exploration and high-volume testing.

# Submit the task
curl --location --request POST "https://api.wavespeed.ai/api/v3/bytedance/seedance-v1.5-pro/text-to-video-fast" \
--header "Content-Type: application/json" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}" \
--data-raw '{
    "aspect_ratio": "16:9",
    "duration": 5,
    "resolution": "720p",
    "generate_audio": true,
    "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}"