Veo 3.1 AI Video Generator
Generate cinematic 8-second video with native, synchronized audio using Google's Veo 3.1. Turn a text prompt, first & last frames, or reference images into film-quality motion — dialogue, sound effects and ambience included — in one click on HeyMarmot.
Optional: add reference images or first/last frames to guide your Veo 3.1 shot.
See Veo 3.1 in motion
Real HeyMarmot creations: a prompt plus references become cinematic, audio-rich Veo video.
Prompt
**### Visual Style** 9: 16 Vertical composition, 4K ultra-clear realistic image quality. Low-key lighting style with high contrast. The cool-toned environment background and the subject's all-black outfit create a stark contrast, emphasizing the character's silhouette and skin sheen, with the typical sharp texture of social media short videos. **### Scene Description** Indoor home environment (suspected modern-style kitchen or living room), with a blurred white cabinet visible in the background. The main subject is a young woman with long hair wearing a black tight long-sleeved crop top and hot pants [Figure 1], performing a highly rhythmic modern dance to music in a dimly lit space, exuding confidence and allure. **### Photography Techniques** Camera: Fixed position (Lock-off), maintaining stable shots, relying on the movement of characters within the frame to create dynamics. Lens: 50mm standard portrait focal length, aperture around f/2.8, providing moderate depth of field, focusing on the subject while retaining the ambient atmosphere. Lighting: Single-sided hard light (side light), casting highlights on the right side of the subject's face and body, with the left side in shadow, enhancing the sense of depth. Emotions: confidence, seduction, movement, coolness. **### Action List** - Raise both hands to touch the back of the head, then open them to the sides, and sway the hips widely from side to side. - The body exhibits a smooth S-shaped wave motion (Body Roll), demonstrating core control. - The head sways slightly with the rhythm, and the long hair swings naturally with the movement. -
Veo 3.1 vs other top AI video models
Switch between Veo 3.1, Seedance 2.0, Sora 2, Kling 3.0 and more in one workspace — compare Veo's cinematic motion and native audio side-by-side.
Cinematic video with sound, built in
Text-to-video, first & last frame, and reference-to-video — Veo 3.1 renders film-quality motion with realistic physics and natively synced dialogue, sound effects and ambience from a single prompt.
Three steps to a Veo 3.1 video
From prompt to final cut, Veo 3.1 is just three steps away.
Describe & add references
Write your prompt, then optionally add first/last frames or reference images.
Pick Veo 3.1 & settings
Select Veo 3.1 Quality or Fast, then set aspect ratio and duration.
Generate and iterate
Preview the result, download, or refine the prompt and rerun in the same thread.
Veo 3.1 and other supported video models
Toggle Veo 3.1, Seedance 2.0, Kling 3.0 and more without leaving HeyMarmot — pick the best engine for each shot.
Veo 3.1
Supported in the HeyMarmot video workspace.
Seedance 2.0
Supported in the HeyMarmot video workspace.
Sora 2
Supported in the HeyMarmot video workspace.
Kling 3.0
Supported in the HeyMarmot video workspace.
HappyHorse
Supported in the HeyMarmot video workspace.
Wan AI
Supported in the HeyMarmot video workspace.
Veo 3.1 video use cases
Turn prompts, photos and frames into scroll-stopping, audio-rich motion content for social, ecommerce, storytelling and paid ads.
Social & short-form video
Turn prompts and photos into vertical Reels, TikTok and Shorts with sound baked in by Veo 3.1.
Product & ad creatives
Animate product shots and brand assets into cinematic push-ins and ambient motion for launches and ads.
Storyboard to motion
Turn concept art and keyframes into previs and pitch videos with first & last frame control.
Reference-driven shots
Feed reference images to keep characters and products consistent across every Veo 3.1 generation.
A studio built for cinematic Veo video
HeyMarmot unifies reference assets, Veo model controls, motion options and history so iterating stays fluid.
Prompt with audio
Describe dialogue, sound effects and ambience and Veo 3.1 generates them in sync with the visuals.
First & last frame
Anchor the opening and closing frames to direct the entire Veo 3.1 shot.
Swap models freely
Jump between Veo 3.1 and Seedance, Sora, Kling — all in one workspace.
Reusable asset library
Save inputs and Veo outputs to remix later without re-uploading.
Built-in social ratios
Render 16:9 and 9:16 from the same prompt for any platform.
Conversation history
Prompts, references and Veo outputs all live in one creative thread.
Veo 3.1 FAQ
Answers for creators generating cinematic AI video with Veo 3.1.
What is Veo 3.1?
Veo 3.1 is Google's latest AI video model. It generates cinematic, film-quality video with natively synchronized audio — dialogue, sound effects and ambience — from text, first/last frames or reference images.
Does Veo 3.1 generate audio?
Yes. Veo 3.1 natively generates synchronized sound — speech, sound effects and ambient audio — together with the video, with no separate step required.
What inputs does Veo 3.1 support?
Text-to-video, first & last frame, and reference images. Veo 3.1 Fast also supports reference-to-video for consistent characters and products.
What length and aspect ratios does Veo 3.1 support?
Veo 3.1 generates 8-second clips in 16:9 or 9:16, ready for landscape and vertical platforms.
What's the difference between Veo 3.1 Quality and Fast?
Quality maximizes fidelity for hero shots, while Fast is cheaper and quicker for iteration and adds reference-to-video support.
Is there a free Veo 3.1 trial?
Yes. New HeyMarmot accounts include starter credits so you can try Veo 3.1 before upgrading.
Explore more AI video resources
See Veo inspirations, check pricing, or read AI video prompting guides.