How does this AI video editing tool work?

After sign-in, upload one authorized source video, choose Edit or Extend, write a prompt, confirm your processing rights, and submit the Seedance 2.5 task. The page then shows task progress and any available result.

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?

Upload only material you own or are authorized to process. You must also meet file, storage, provider, and content-policy requirements. The server rejects a video-editing task unless it contains exactly one source video.

How are AI video editing credits calculated?

The workspace displays a conservative estimate based on the selected Seedance model, duration, and resolution. The server validates the request and is the source of truth for any credit consumption or refund behavior.

AI Video Editing Tool with Seedance 2.5 | SeeVideo

Upload a source video, describe the change or continuation you want, then track the task and download the result when it is ready.

Video editEdit an existing video with a prompt

Edit instruction

Upload one source video

Use one MP4 or MOV source, 2–30 seconds, 480p or 720p, 24–60 FPS, and up to 200 MB. Edit preserves the source duration; both Edit and Extend preserve its ratio.

Doubao-Seedance-2.5

Add a source video to calculate pre-authorization

How to edit video with AI online

This AI video editor accepts one source clip and one written instruction. Keep the requested change focused so the model has a clear editing target.

1
Upload one source video
Sign in, choose a video you own or are authorized to process, and upload it to the secure media flow. Supported browser video types include MP4, MOV, and WebM, up to 250 MB.
2
Write a focused edit prompt
State what should change, what should remain stable, and any continuity detail that matters. Use Edit for a new interpretation of the source or Extend for a following 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

Choose the workflow that matches the outcome you need. Both workflows use the uploaded source clip rather than starting a video from text alone.

Edit an uploaded video with a text prompt

Use Edit to ask for a focused visual reinterpretation of the source video. Seedance 2.5 keeps the source aspect ratio and uses automatic duration for this task type; it is not a frame-accurate timeline edit.

Extend a video with AI

Use Extend to request a continuation after the source clip. Describe the next action, camera behavior, setting, and continuity cues instead of asking for unrelated scenes in one prompt.

Workspace requirements and output settings

The interface exposes only the constraints supported by this Seedance 2.5 request shape. The server validates the final request before it reaches the provider.

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 source ratio is adaptive. Edit uses automatic duration; an extension can use a selected duration when the provider accepts it.
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: A signed-in account, configured storage, provider access, and enough credits are required. The displayed estimate is not a price guarantee; the server is authoritative at 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 this AI video editor does not claim

The workspace sends a model task from one source video and a prompt. It is not a replacement for conventional post-production or a guarantee of a particular result.

No multi-track timeline, trimming interface, keyframes, or frame-accurate local editing controls are provided.
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, completion time, and provider availability can vary by source content, request settings, policy review, and upstream service conditions.
A task requires active storage and provider configuration. A missing or unavailable upstream service can prevent upload or submission.
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?: After sign-in, upload one authorized source video, choose Edit or Extend, write a prompt, confirm your processing rights, and submit the Seedance 2.5 task. The page then shows task progress and any available result.
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?: Upload only material you own or are authorized to process. You must also meet file, storage, provider, and content-policy requirements. The server rejects a video-editing task unless it contains exactly one source video.
How are AI video editing credits calculated?: The workspace displays a conservative estimate based on the selected Seedance model, duration, and resolution. The server validates the request and is the source of truth for any credit consumption or refund behavior.

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 available plans; this page does not state an editing price or credit amount.

Read ByteDance Seed's Seedance 2.5 model page

Model documentation may describe editing-related research or product capabilities. It does not establish availability, settings, price, quality, or delivery of this independent service.