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
中国仙侠动画电影风格，超精细3D CG渲染，15秒高燃对决镜头，金青双色调强烈对比。0-3秒：大远景，混沌虚空中两道流光从画面两侧极速对冲——左侧金光中隐约可见一名身着青灰色道袍的中年修士，面容沉静如水，手持一柄 绿小剑，正是韩立；右侧青黑色煞气中一名白发黑袍的清瘦男子负手而立，眼眸深邃如古井，周身萦绕灭世之气，正是王林，两人遥遥对视，虚空因双方气场碰撞而龟裂，伴随低沉的雷鸣。4-8秒：韩立掐诀催动青竹蜂云剑，七十 二柄飞剑化为漫天剑雨如金色暴风般席卷而去；王林右手一指，身后凝聚出一只遮天蔽日的青色巨手虚影，巨手迎着剑雨一掌拍下，剑气与掌力碰撞的瞬间爆发出金青双色的能量洪流，冲击波向四面扩散撕裂虚空，伴随金属碰撞 与空间破碎声。9-12秒：定格慢放，韩立身后浮现金色万佛虚影，双目金光大盛，万剑归宗凝聚为一道百丈金色剑光直劈而下；王林双眸中闪过一抹疯狂，口中低吼"天地若不容我，我便逆了这天！"，右手高举，一颗旋转的黑色 球在掌心凝聚，散发出扭曲空间的毁灭气息，两股终极之力正面撞击，时间仿佛静止。13-15秒：能量大爆炸，画面白光吞噬一切后缓缓消散，烟尘中两个身影背对背伫立在碎裂的虚空中，衣袍残破，各自喘息，韩立淡淡开口"阁 的逆天之术，韩某佩服"，王林嘴角浮现一丝笑意，音效收束为虚空碎片坠落的清脆声与渐弱风声。
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.