Edit an uploaded video with a text prompt
Use Edit to change the scene, style, lighting, or selected visual details while guiding Seedance to preserve the important subject and motion. The output keeps the source aspect ratio and duration.
Seedance Video Editing Online
Edit an existing video or extend its final moment with Seedance 2.5. Upload one source clip, write a clear instruction, choose 480p or 720p, and review the generated result before downloading it.
How to edit video with AI online
Seedance video editing uses one source clip and one written instruction. A focused request gives the model a clear target and makes the result easier to review.
1
Upload one source video
Sign in and upload one video you own or are authorized to process. Use MP4 or MOV, 2–30 seconds, up to 200 MB, at 480p or 720p and 24–60 FPS.
2
Write a focused edit prompt
State what should change, what must remain stable, and any continuity detail that matters. Use Edit for a visual reinterpretation or Extend for the next segment.
3
Track, review, and download
Submit the task, monitor its status, then watch the full result before downloading. Retry a failed task only after adjusting the instruction or source material.
Seedance 2.5 video editing workflows
Seedance 2.5 supports two prompt-led video editing workflows. Both start from your uploaded clip instead of generating a new scene from text alone.
Extend a video with AI
Use Extend to create what happens after the source clip. Describe the next action, camera behavior, setting, and continuity cues so the new segment connects naturally.
Workspace requirements and output settings
These are the current Seedance 2.5 video editing requirements exposed by the editor. Check the estimate and selected settings before you submit.
- Input
- Exactly one uploaded source video is required for every edit or extension task. Extra images, audio, and video references are not accepted on this page.
- Framing and duration
- The output follows the source ratio. Edit uses the source duration, while Extend creates the next segment after the final moment.
- Output
- Choose 480p or 720p output and MP4 or MOV where supported. The model output can differ from the source in detail, motion, and rendering quality.
- Access and credits
- You need a signed-in account, configured video storage, Seedance 2.5 access, and enough credits. The page estimates credits from the source and output video before submission.
AI video editing use cases
Use a source clip when its subject, framing, or movement is more useful than generating a new scene from scratch. Results should be reviewed before publication or client delivery.
Product scene variations
Test a different setting, surface treatment, or lighting mood around a product clip while asking the prompt to preserve the product and camera path.
Social video variations
Create alternate visual directions for a short social clip from the same approved source, then select the result that best matches the campaign context.
Location or style reinterpretation
Describe a setting or art-direction change while retaining the existing action and composition. Avoid assuming every object or written detail will remain identical.
Lighting and atmosphere studies
Explore daylight, overcast, evening, or stylized atmosphere directions with a compact prompt that names the desired lighting and what should stay unchanged.
Prompt-led creative revisions
Edit video with AI by translating a creative brief into one specific instruction. This works best when the prompt separates the intended change from protected details.
Narrative continuation
Use AI video extension to ask for the next moment of an existing shot. Include an action direction and continuity cues for the subject, camera, environment, and pacing.
AI video editing prompt patterns
A useful prompt names the edit, anchors what must remain stable, and adds only the details needed to guide the result. Treat these as starting patterns, not guaranteed outcomes.
Prompt formula: requested change + preserved subject or action + camera or lighting continuity + constraints to avoid.
Product background
Replace only the background with a clean sunlit kitchen. Keep the bottle shape, label placement, hand movement, and slow push-in camera motion consistent.
Name the specific item and movement that should stay stable instead of using broad requests such as make it better.
Visual style direction
Keep the performer, pose, and camera angle. Restyle the scene as a restrained editorial film look with cool window light and subtle grain; do not add titles or logos.
Style can affect fine detail. Explicitly say which identities, text, props, and framing are most important to preserve.
Continuity-focused extension
Continue from the last moment: the cyclist rides forward through the same tree-lined street, the camera follows at the same low angle, and the late-afternoon light stays consistent.
For an extension, describe the next action and repeat the few visual cues that make the new segment feel connected to the source.
Short next beat
Extend the shot by one calm beat as the subject turns toward the window, keeping the same room, wardrobe, lens perspective, and gentle handheld movement.
Short, coherent continuations are easier to review than a request that changes place, cast, action, and camera language at the same time.
Review every generated result
AI video generation can alter details unexpectedly. Watch the entire result and use this checklist before publishing, sharing, or replacing an approved source clip.
Subject and identity
Check people, products, logos, clothing, and important objects for unintended changes.
Motion and continuity
Check movement, interactions, camera direction, and transitions from beginning to end.
Text and marks
Review readable text, labels, trademarks, and signs. Do not assume the model will preserve them exactly.
Visual artifacts
Look for flicker, unstable edges, occlusions, warped hands, or changes in the background and lighting.
Audio
Review the generated output with sound if audio is relevant to the task; check timing, intelligibility, and any unexpected changes.
Rights and approval
Confirm that the result is appropriate for the people, brands, footage, and distribution channel involved.
What to expect from Seedance video editing
Seedance video editing is prompt-based generation from one source clip. It complements a conventional editor rather than replacing frame-accurate post-production.
- This is prompt-led video editing, not a multi-track timeline with trimming, keyframes, or frame-accurate local controls.
- The tool does not promise watermark removal, removal of logos, or the alteration of rights-managed material.
- The tool does not claim lossless output, exact pixel preservation, or perfect preservation of faces, text, objects, or motion.
- Output quality and completion time can vary with the source clip, prompt, settings, content review, and current service demand.
- Generation time and access can vary with your account, storage configuration, provider capacity, and content review.
- Only submit content you are authorized to process and that complies with the applicable terms and content-safety rules.
AI video editing FAQ
- How does this AI video editing tool work?
- Sign in, upload one authorized source video, choose Edit or Extend, write a prompt, confirm your processing rights, and submit. The page tracks the Seedance 2.5 task and shows the result when it is ready.
- What is the difference between Edit and Extend?
- Edit asks the model for a prompt-led reinterpretation of the uploaded clip. Extend asks it to create a following segment from that clip. Neither workflow is a conventional timeline editor.
- Can I upload any video for AI editing?
- Use one MP4 or MOV clip that you own or are authorized to edit. Keep it within the listed duration, size, resolution, and frame-rate limits so the editor can process it reliably.
- How are AI video editing credits calculated?
- The editor estimates credits from the selected Seedance 2.5 resolution and the source plus output duration. Final usage is settled after generation, and eligible failed tasks can receive a refund.
Related video workflows and resources
Text to VideoStart a new clip from a written scene when an existing source video is not required.Image to VideoUse an authorized still image to define the opening composition and describe its motion.PricingReview plans and credit pricing before you start a Seedance video editing task.
Read ByteDance Seed's Seedance 2.5 model page
The official model page provides Seedance 2.5 background. SeeVideo adds the upload, prompt, credit, task tracking, and result workflow described on this page.