01
Define the story
Write the subject, action, camera direction, lighting, and emotional tone. For a long sequence, outline the setup, development, and final beat.
Production guide
How AI Long Video Works
Generate and download a finished cinematic video from five seconds to a complete minute.
From Prompt to Finished Video
02
Choose duration
Choose 5s, 15s, 30s, or 60s. The studio selects the connected production route from 4 model lanes.
03
Select production settings
Choose the aspect ratio and an optional image-led opening frame. Seedance 2.5 native audio is included automatically.
04
Generate with frame continuity
5s, 15s, and 30s generate in one pass. For 60s, the first 30s scene finishes before its final frame is used to start the continuation.
05
Automatic assembly
After the continuation is ready, the backend joins both scenes and their native audio into one finished MP4.
06
Preview and download
The finished video appears in your history as one playable, downloadable file. No editor or manual stitching is required.
Current Duration Architecture
The production structure stays behind the scenes; every option is delivered as one finished video.
- 5s and 15s: one generation
- Native 30s: 1 Seedance 2.5 generation with native audio
- Native 60s: 2 × 30s Seedance 2.5 scenes with native audio
- The two 60s scenes are assembled automatically
- Customer delivery: one playable and downloadable MP4
Ready to build a longer story?
Choose a paid plan, then open the studio with a long-sequence preset.
Open 60-second preset →