Question 1

What is Seedance 1.5 Pro?

Accepted Answer

Seedance 1.5 Pro is an AI video generation model with sound by ByteDance. Creates videos up to 12 seconds at up to 720p with native audio, lip-sync in 8+ languages and cinematic camera control.

Question 2

How does native audio work?

Accepted Answer

Seedance 1.5 Pro uses Dual-Branch architecture — generates video and audio simultaneously in a single pass. Dialogues, sound effects and background music are automatically synced with frames.

Question 3

Which languages does lip-sync support?

Accepted Answer

Phoneme-level lip-sync for 8+ languages: English, Chinese (Mandarin, Cantonese), Japanese, Korean, Spanish, Portuguese, Indonesian and other dialects.

Question 4

What resolutions are available?

Accepted Answer

480p and 720p. Supported aspect ratios: 16:9, 9:16, 1:1, 4:3, 3:4, 21:9.

Question 5

How much does generation cost?

Accepted Answer

Without sound: 480p from 3 credits, 720p from 6 credits. With sound the cost doubles. Seedance 1.5 Pro is up to 60% cheaper than Kling 2.6 for video with audio.

Question 6

What is Start + End Frame?

Accepted Answer

You can set start and end frames — the model creates smooth transitions between them. This gives narrative control and allows building multi-shot stories.

Question 7

Why use fixed camera?

Accepted Answer

Fixed camera stabilizes the background and improves lip-sync quality in dialogue scenes. Recommended for speaking characters.

Question 8

Can I use it commercially?

Accepted Answer

Yes, all Seedance 1.5 Pro videos can be used in commercial projects without restrictions.

Seedance 1.5 Pro — AI Video Generation | Clipia.ai

Seedance 1.5 Pro — AI Video Generation | Clipia.ai