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
真人演员扮演实拍，模特在参加cosplay漫展，超高清摄像机对着一双光脚没有穿袜子的光脚，镜头环绕着角色，缓慢网上拉，来到角色臀部，最后镜头落在角色下巴，看不到整张脸。 镜头拉远，看到整个角色上半身，角色在场景内开始展示身材，表情妩媚，对着镜头做飞吻的表情，温柔的说一句：我好看吗。 画质高清8k，摄影级画质。真人演员实拍，不是动画片，超逼真写实画质，可以清晰地看见演员衣服的褶皱，皮肤的纹理，毛孔，微微的汗水，细致的微表情，捕捉到各种丰富的细节。
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.