Seedance 2.0 Audio Workflow

Seedance 2.0 Audio Reference Not Working?

Try this black screen video workflow to make Seedance 2.0 follow reference audio more closely for lip-syncing, MV production, and character videos.

Problem

Audio references may drift in rhythm and intervals.

Fix

Use audio segments as black screen video inputs.

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The Problem

Audio Reference Can Sound Similar, But Still Drift

Seedance 2.0 natively supports audio reference, but directly using audio as a reference may cause significant differences between the generated audio and the original audio. This is especially noticeable with music.

Input audio compared with Seedance output waveform 1 — The output may sound similar, but the rhythm and intervals can be different.

Input audio compared with Seedance output waveform 2 — A black screen video reference makes the output much more consistent with the input audio.

Core Workflow

Convert the Audio into a Black Screen Video

The key solution is simple: convert each audio segment into a black screen video, then use that black screen video as the input for Seedance 2.0.

Workflow showing audio converted to black screen video before Seedance generation

Prepare the materials

Start with the original audio, a clear character image reference, and lyrics or dialogue lines that define the intended lip-sync.

Split the audio

Because Seedance 2.0 supports videos no longer than 15 seconds, split longer music or dialogue into multiple short segments.

Convert each segment into black screen video

Create a black screen MP4 with the original audio track. This turns the audio into a video input that Seedance can follow more closely.

Generate with Seedance 2.0

Use the black screen video as the input reference, then keep the output duration strictly consistent with the input video duration.

Materials

Prepare Audio, Lyrics, and an Image Reference

Seedance audio guide character reference

Original audio

Lyrics

Waking up to golden light. Coffee warm and feeling right.

Birds are singing just for me. Living life so wild and free.

This is my beautiful life. Every moment shining bright.

Dancing through the ups and downs. Wearing joy like a crown.

Beautiful life, oh yeah. Beautiful life

Key step: convert each audio segment into a black screen MP4 before using it as a Seedance 2.0 video reference.

Conversion

Create the Black Screen Video

You can create this with FFmpeg, or use a video editor like CapCut by placing the audio segment on a black canvas and exporting it as MP4.

Example FFmpeg command

ffmpeg -f lavfi -i color=c=black:s=1280x720:r=24 -i clip1_audio.mp3 -shortest -c:v libx264 -c:a aac clip1.mp4

Results

Black Screen Input vs Seedance Output

Each segment uses the black screen video as the reference input, then asks Seedance 2.0 to drive the protagonist in the image with strict lip-sync.

woo~

Black screen reference video and Seedance 2.0 output

Prompt

Use the audio from @Video 1 to drive the protagonist in @Image 1 to generate an MV with multiple shots, creating an overall light, lively, and sunny atmosphere. Lip-sync is strictly synchronized: "woo~ woo~"

Black screen video

Output video

Waking up to golden light. Coffee warm and feeling right.

Black screen reference video and Seedance 2.0 output

Prompt

Use the audio from @Video 1 to drive the protagonist in @Image 1 to generate an MV with multiple shots, change the outfit and background, and create an overall light, lively, and sunny atmosphere. Lip-sync strictly: "Waking up to golden light. Coffee warm and feeling right."

Black screen video

Output video

Birds are singing just for me. Living life so wild and free.

Black screen reference video and Seedance 2.0 output

Prompt

Use the audio from @Video 1 to drive the protagonist in @Image 1 to generate an MV with multiple shots, change the outfit and background, and create an overall light, lively, and sunny atmosphere. Lip-sync strictly: "Birds are singing just for me. Living life so wild and free."

Black screen video

Output video

This is my beautiful life

Black screen reference video and Seedance 2.0 output

Prompt

Black screen video

Output video

Every moment shining bright. Dancing through the ups and downs. Wearing joy like a crown.

Black screen reference video and Seedance 2.0 output

Prompt

Use the audio from @Video 1 to drive the protagonist in @Image 1 to generate an MV with multiple shots, change the outfit and background, and create an overall light, lively, and sunny atmosphere. Lip-sync strictly: "Every moment shining bright, Dancing through the ups and downs. Wearing joy like a crown."

Black screen video

Output video

woo~ Beautiful life, oh yeah Beautiful life.

Black screen reference video and Seedance 2.0 output

Prompt

Black screen video

Output video

Final Output

Final Product After Synthesizing Lip-Sync Video with Original Audio

The output audio is not 100% identical to the input audio, but the consistency is strong enough to reduce post-production adjustment costs during MV production.

Try the audio workflow on Seedance 2.0.

Turn audio segments into black screen video references, then generate more consistent lip-sync videos on SeeGen AI.

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