Introducing Google Veo3.1 Fast Video Extend on WaveSpeedAI

Introducing Google Veo 3.1 Video Extend (Fast) on WaveSpeedAI

The future of AI video creation just got faster. We’re excited to announce that Google Veo 3.1 Video Extend (Fast) is now available on WaveSpeedAI, bringing you the power to seamlessly extend your AI-generated videos with lightning-fast turnaround times.

Building on Google’s revolutionary Veo 3.1 foundation—which has been recognized as the top performer on MovieGenBench for overall preference and visual realism—this Fast endpoint is designed for creators who need to iterate quickly without sacrificing quality.

What is Veo 3.1 Video Extend (Fast)?

Veo 3.1 Video Extend (Fast) is a specialized video-to-video model that allows you to append 7-second continuations to existing Veo-generated videos. Unlike regeneration tools that create entirely new content, this model performs true continuation—preserving the look, motion style, and aspect ratio of your original footage while seamlessly extending the narrative.

What makes the Fast endpoint special is its optimization for speed. You get the same intelligent continuation logic as the standard Video Extend, but with significantly faster turnaround times. This means you can experiment with different narrative directions, test alternate endings, and refine your creative vision in a fraction of the time.

Each call adds exactly 7 seconds to your video, and you can chain up to 20 extensions together, allowing you to build videos up to 148 seconds in total length. The output is always delivered as a single, merged MP4 file—no manual stitching required.

Key Features

• Speed-Optimized Processing: Tuned specifically for faster iteration cycles, letting you test ideas rapidly without long wait times
• True Video Continuation: Preserves visual consistency, motion patterns, and style from your source footage
• Fixed 7-Second Extensions: Predictable output length for easier project planning
• Chain Up to 20 Extensions: Build videos up to 2.5 minutes from a single base clip
• Single Merged Output: Receive one complete video file containing both original and extended footage
• Audio Continuity: Maintains coherent audio that flows naturally from your original content—a major advancement introduced in Veo 3.1
• Resolution Support: Works with both 720p and 1080p content in 16:9 or 9:16 aspect ratios

Real-World Use Cases

Social Media Content Creation

Short-form video platforms like TikTok, Instagram Reels, and YouTube Shorts thrive on compelling narratives that unfold quickly. With Video Extend (Fast), you can generate a base clip and rapidly test different “next beats” to find the most engaging continuation. The speed of this endpoint means you can iterate through multiple creative directions in a single session.

Advertising and Promotional Content

Marketing teams can quickly create extended cuts, alternate endings, or additional moments for trailers and promotional campaigns. Need a 30-second spot but your base clip is only 8 seconds? Chain a few extensions together to hit your target duration while maintaining visual coherence throughout.

Pre-visualization and Storyboarding

Filmmakers and creative directors use Veo 3.1 for concept prototyping and pre-visualization. The Fast endpoint accelerates this process, allowing you to explore scene extensions and narrative possibilities before committing to full production. Studios like Promise Studios are already leveraging Veo 3.1 for generative storyboarding and previsualization workflows.

Rapid Response to Creative Feedback

When review notes come in requesting “a bit more room” in a particular scene, you don’t need to regenerate the entire sequence. Simply extend the specific section that needs adjustment while preserving everything that already works.

Building Long-Form Narratives

Starting with a strong establishing shot, you can build minute-plus sequences by chaining extensions. Each new segment builds on the final second of the previous clip, ensuring smooth visual transitions and coherent motion throughout.

Getting Started on WaveSpeedAI

Using Veo 3.1 Video Extend (Fast) on WaveSpeedAI is straightforward:

1. Generate a Base Clip: Start with a video created using Veo 3.1 text-to-video or image-to-video endpoints
2. Submit Your Extension Request: Pass your base video to the Video Extend (Fast) endpoint along with a continuation prompt
3. Craft Your Prompt: Describe what should happen next—think “next shot” or “next beat” and include:
   • Action (what characters or objects should do)
   • Camera behavior (pan, zoom, dolly movement)
   • Mood and visual style (lighting, atmosphere, pacing)
4. Download Your Extended Video: Receive a single merged clip containing both original and new footage
5. Chain Further Extensions: Feed the new output back into the endpoint to continue building your narrative

Prompting Tips for Best Results

Think of your prompt as directing the next shot in a sequence. A well-structured prompt might look like:

“Continue from previous shot, camera slowly cranes up, the character walks toward the glowing city skyline, warm cinematic lighting, smooth motion.”

Be sure to mention what should stay consistent—main character appearance, wardrobe, time of day, and color palette. This helps the model maintain visual coherence across extensions.

Pricing That Makes Sense

WaveSpeedAI offers this powerful capability at a flat rate of $1.05 per extension. Each run adds 7 seconds of new footage to your clip, working out to approximately $0.15 per second of generated content.

This simple, predictable pricing means you can plan your production budget with confidence, knowing exactly what each extension will cost.

Why WaveSpeedAI?

When you access Veo 3.1 Video Extend (Fast) through WaveSpeedAI, you get more than just the model:

• No Cold Starts: Your requests begin processing immediately—no waiting for infrastructure to spin up
• Reliable Performance: Consistent inference times you can count on for production workflows
• Ready-to-Use REST API: Simple integration into your existing tools and pipelines
• Affordable Access: Competitive pricing that makes AI video creation accessible to creators of all sizes

Start Creating Longer, More Compelling Videos Today

Google’s Veo 3.1 has set a new standard in AI video generation, outperforming competitors in visual quality, prompt adherence, and physics realism. The Video Extend (Fast) endpoint puts this power at your fingertips with the speed needed for iterative creative workflows.

Whether you’re building social content, crafting advertisements, or developing pre-visualization for larger productions, this tool enables you to extend your creative vision—literally—with each 7-second block you add.

Ready to transform your video creation workflow? Try Google Veo 3.1 Video Extend (Fast) on WaveSpeedAI today and experience the future of AI-powered video continuation.