Alibaba WAN 2.7 | AI Video Extend With Last Frame Control

Wan 2.7 Video Extend

Wan 2.7 Video Extend continues an existing video clip with new AI-generated footage, seamlessly picking up from where the original ends. Upload a source video, describe what should happen next, and optionally provide an audio track — the model generates a natural, motion-consistent extension at 720p or 1080p.

Need to edit a video? Try Wan 2.7 Video Edit
Need to generate from an image? Try Wan 2.7 Image-to-Video

Why Choose This?

Seamless video continuation Extends your existing clip with new AI-generated footage that matches the original motion, style, and scene context.
Prompt-guided extension Describe what should happen next — direct the action, atmosphere, and narrative of the extended segment.
Audio input support Upload an audio track to guide the rhythm and pacing of the extended video.
Negative prompt support Specify what to avoid in the extension for more precise output control.
Prompt expansion Enable enable_prompt_expansion to let the model automatically enrich and optimize your prompt before generation.
Resolution options Generate extensions at 720p or 1080p to match your delivery requirements.

Parameters

Parameter	Required	Description
video	Yes	Source video to extend (URL or file upload).
prompt	Yes	Text description of the desired continuation.
audio	No	Audio URL to guide generation.
negative_prompt	No	Elements to exclude from the generated video.
resolution	No	Output resolution: 720p (default) or 1080p.
duration	No	Total duration of the final output video in seconds (2–15s). Default: 5.
enable_prompt_expansion	No	Enable automatic prompt optimization before generation. Default: off.
seed	No	Random seed for reproducible results. Use -1 for a random seed.

How to Use

Upload your video — provide the source clip to extend via URL or drag-and-drop.
Write your prompt — describe what should happen next in the scene. Use the Prompt Enhancer for better results.
Upload audio (optional) — provide an audio URL to synchronize the extension.
Add negative prompt (optional) — specify elements you want to exclude from the extended footage.
Select resolution — 720p for standard output, 1080p for higher-quality results.
Set duration — choose the total length of the output video in seconds (2–15s).
Enable prompt expansion (optional) — let the model automatically enrich your prompt.
Set seed (optional) — fix the seed to reproduce a specific result in future runs.
Submit — generate, preview, and download your extended video.

Pricing

Duration	720p	1080p
5s	$0.50	$0.75
10s	$1.00	$1.50
15s	$1.50	$2.25

Billing Rules

720p: $0.10 per second
1080p: $0.15 per second (1.5× base rate)
Duration range: 2–15 seconds

Best Use Cases

Short Film & Narrative — Extend key scenes to develop story beats without reshooting.
Social Media Content — Lengthen clips to hit optimal duration for Reels, TikTok, and Shorts.
Marketing & Advertising — Extend product or campaign videos to fill longer ad slots.
Creative Exploration — Explore alternate continuations of the same source clip with different prompts.
Audio-Visual Projects — Synchronize extended footage to a music track or voiceover.

Pro Tips

Be specific about what should happen next — camera movement, subject action, and environmental changes.
Use negative_prompt to prevent the extension from repeating or contradicting the source footage.
Enable prompt expansion for shorter or less detailed prompts to get richer output automatically.
Use 720p to test your extension direction before committing to a 1080p final render.
Fix the seed once you find a direction you like to iterate consistently.

Notes

Both video and prompt are required fields; all other parameters are optional.
Duration range: 2–15 seconds for the total output video length.
Ensure video and audio URLs are publicly accessible if using links rather than direct uploads.
Please ensure your content complies with Alibaba's usage policies.

Related Models

Wan 2.7 Video Edit — Prompt-driven video editing with multi-image reference support.
Wan 2.7 Image-to-Video — Animate a reference image into a cinematic video clip.
Wan 2.7 Text-to-Video — Generate video from text prompts without existing footage.

Alibaba WAN 2.7 Video Extend extends existing videos with optional last frame control and audio support, supporting 720p/1080p output. Ready-to-use REST inference API, best performance, no cold starts, affordable pricing.

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README