Seedance 1.5 Pro Video Audio, First/Last Frame & Video Extend

Create 4–12 second videos from text, images, or existing clips. Choose 480p or 720p, pick an aspect ratio, lock framing with camera fixed, and optionally generate audio so your output isn’t silent.

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What is Seedance 1.5 Pro?

Seedance 1.5 Pro is a short-form AI video model built for three workflows: text-to-video, image-to-video, and video extend. On Imagenter AI you can generate clips with optional audio, then iterate quickly using resolution, duration, and camera controls.

  • Flexible Generation
    Seedance 1.5 Pro supports a wide range of creative scenarios with minimal prompt rejections.
  • Three Creation Modes
    Text-to-video from a prompt, image-to-video from a first frame (with an optional last frame), and video extend to continue an existing clip with a matching look and motion.
  • Optional Audio Generation
    Enable audio when sound matters. Turn it off when you only need silent b-roll—audio doubles the credit cost.
  • Specs + Control Knobs
    Generate 4–12 second videos in 480p or 720p, choose common aspect ratios, and use camera fixed to keep framing stable for product shots, portraits, and UI-style scenes.

Seedance 1.5 Pro Key Features

Everything you need to generate, control, and extend short videos in one place.

Text-to-Video (T2V)

Turn a prompt into a short clip with your chosen resolution, duration, and aspect ratio—ideal for quick concepting and story beats.

Image-to-Video (I2V) + First/Last Frame

Animate a still image using a first frame, and optionally provide a last frame to constrain how the clip ends for smoother transitions.

Video Extend Mode

Upload a source clip and generate a continuation. Great for making a scene longer without redoing your setup from scratch.

Audio Generation (Optional)

Add an audio track so your output isn’t silent. Keep it off to reduce cost when sound is not required.

Flexible Generation

Seedance 1.5 Pro supports a wide range of creative scenarios with minimal prompt rejections.

Transparent Credit Pricing

480p costs 4 credits/second and 720p costs 8 credits/second. Enabling audio doubles the credit rate. Total cost scales linearly with duration.

How to Use Seedance 1.5 Pro

A simple workflow that keeps quality, control, and cost predictable:

Tips

Practical Settings Guide

Three settings that have an outsized impact on control, quality, and cost.

480p vs 720p: Iterate, Then Upgrade

Start in 480p to explore prompts quickly (4 credits/s), then switch to 720p for a sharper final output (8 credits/s).

Audio On/Off: Spend Credits Where It Matters

Audio doubles the credit rate. Keep it off for silent b-roll; enable it for scenes where ambience, effects, or timing adds clarity and impact.

First/Last Frame + Camera Fixed: More Control

Use a last frame in image-to-video to constrain the ending, and enable camera fixed to keep framing stable across iterations.
FAQ

Seedance 1.5 Pro - Frequently Asked Questions

Have questions? Find answers below or contact support@sora2.center for assistance.

1

What can I create with Seedance 1.5 Pro?

You can generate videos from text (T2V), animate images (I2V with an optional last frame), or extend an existing clip. Audio generation is optional.

2

What resolutions, durations, and aspect ratios are supported?

Seedance 1.5 Pro supports 480p and 720p, with durations from 4–12 seconds. For T2V and I2V, you can choose common aspect ratios like 16:9 and 9:16. Video extend inherits the aspect ratio from your source clip.

3

How much does Seedance 1.5 Pro cost on Imagenter AI?

480p costs 4 credits/second and 720p costs 8 credits/second. Enabling audio doubles the credit rate. Your total cost is credits/second × duration.

4

What is First/Last Frame mode?

In image-to-video, you upload a first frame and can optionally add a last frame. The model generates a clip that transitions from the first frame toward the last frame, giving you tighter control over the ending.

5

How does Video Extend work?

Upload an existing video and generate a continuation based on your prompt. It’s useful when you want a longer scene while keeping the original style and motion as a reference.

6

Seedance 1.5 Pro vs Seedance 1.5 Pro Fast: what’s different?

Seedance 1.5 Pro supports 480p/720p (4/8 credits per second, audio doubles). Seedance 1.5 Pro Fast supports 720p/1080p (6/9 credits per second, audio doubles). Both support T2V, I2V (optional last frame), and video extend—choose Fast when you specifically need 1080p output.