什么是图生视频 AI？
图生视频（I2V）AI 通过添加运动、镜头移动和物理效果将静态图像动画化为视频片段。上传照片或插画，Seedance 2.0、Kling 3.0 或 Luma AI 等模型即可生成 4-20 秒的视频，同时保留原始视觉风格。
图生视频 AI 的工作原理
I2V 技术的核心能力。
单图输入
上传一张图片，AI 预测场景应如何运动。模型解读深度、物体和物理关系，从静态帧生成自然运动。
镜头运动控制
指定平移、缩放、环绕或推拉等镜头运动。Luma AI 和 Runway Gen-4 提供精确的镜头路径控制，实现电影级效果。
角色一致性
I2V 保持源图像中角色和物体的外观。Seedance 2.0 导演模式使用面部锁定保持跨镜头的身份一致性。
多图参考
高级 I2V 模式接受多张参考图片。Seedance 导演模式支持最多 12 个输入文件，用于风格、角色和场景参考。
风格保留
生成的视频保留输入图像的艺术风格，无论是照片、数字绘画、动漫还是 3D 渲染。
视频延展
将 I2V 输出延展到初始片段以外的时长。大多数模型支持迭代延展，从单张图像创建更长的序列。
图生视频 AI 常见问题
关于用 AI 将图片动画化的常见问题。
探索图生视频工具
体验本指南中讨论的 AI 模型。
AI Video Generator
Free AI video generator — create videos from text, images, or clips with Seedance 2.0, Sora 2, Kling 3.0, Runway Gen-4 & more. Compare models side by side.
AI Image Generator
Free AI image generator — create images from text prompts with Midjourney v7, Flux 2, DALL-E 3, Stable Diffusion & more. Compare quality side by side.
AI Music Generator
Free AI music generator — create songs with vocals, instrumentals & soundtracks using Suno v5, Udio 2 & more. Text-to-music with lyrics support.
AI Video Prompt Generator
AI video prompt generator — build optimized SCELA prompts for Seedance 2.0, Sora 2, Kling 3.0 & Runway Gen-4. Free tool with templates for YouTube, TikTok & Shorts.
Seedance 2.0 AI Video Generator
Seedance 2.0 by ByteDance — Director Mode with 12-file input, 4K output, face-lock consistency & lip-sync. Free 5 videos/day on Dreamina.
Kling 3.0 AI Video Generator
Kling 3.0 by Kuaishou — multi-shot 4K AI video with up to 6 camera cuts, lip-sync dialogue & synchronized audio. Free 6 clips/day, Pro from $8/mo.
Sora 2 AI Video Generator
Sora 2 by OpenAI — cinematic 1080p AI video from text with Storyboard editor, physics simulation & seamless scene transitions. Plans from $20/mo.
Runway Gen-4 AI Video Generator
Runway Gen-4 & Gen-4.5 — #1 on Video Arena with cinematic 4K output, motion brush, camera controls, inpainting & Adobe Firefly integration. From ~$15/mo.
Veo 3 AI Video Generator
Veo 3 by Google DeepMind — native audio generation alongside video, vertical 9:16 for TikTok/Shorts, scene extension & Gemini API access. Free to try.
Hailuo AI Video Generator
Hailuo AI by MiniMax — ultra-fast video generation with complex character expressions, anime/ink wash/game CG art styles & generous free tier. 30-second generation.
Wan 2.6 AI Video Generator
Wan 2.6 by Alibaba — open-source AI video model you can self-host. Text-to-video, image-to-video, ComfyUI integration & community extensions. Free online.
Luma AI Dream Machine Video Generator
Luma AI Dream Machine — ultra-fast AI video generation with camera motion controls, keyframe animation & image-to-video. Free 30 generations/month, API from $0.0032/frame.
Pika AI Video Generator & Editor
Pika AI — generate and edit AI videos with Pikaffects visual FX, lip sync, scene expansion & AI sound effects. Free 250 credits/month, Standard from $8/mo.
Midjourney 7 AI Image Generator
Midjourney v7 — premium photorealistic AI images with personalized style, ultra-high resolution, variation & remix tools, and multi-image blending. Plans from ~$10/mo.
Flux 2 AI Image Generator
Flux 2 by Black Forest Labs — open-weight AI image model with fast inference, accurate text rendering & commercial-friendly licensing. Self-host or use online.
Suno 5 AI Music Generator
Suno v5 — generate full songs with vocals, lyrics & multi-instrument arrangements from text prompts. Free tier available, premium plans for commercial use.
Udio 2 AI Music Generator
Udio 2 — studio-quality AI music generation with vocal cloning, stem separation, remix tools & genre-specific fine-tuning. Audiophile-grade output quality.
Text to Video AI Generator
Text to video AI — turn text prompts into cinematic video clips. Compare Seedance, Sora, Kling, Runway & 10+ models side by side. Free to start.
Image to Video AI Generator
Image to video AI — animate photos and illustrations into 4-20s video clips with motion control, camera paths & character consistency across frames.
Video to Video AI Generator
Video to video AI — restyle, upscale & transform existing clips with AI style transfer. Convert footage to anime, cinematic, or artistic looks while preserving motion.
Text to Image AI Generator
Text to image AI — generate photorealistic or artistic images from text descriptions. Compare Midjourney v7, DALL-E 3, Flux 2 & Stable Diffusion side by side.
Image to Image AI Generator
Image to image AI — transform, upscale & restyle photos with AI-powered style transfer, inpainting, outpainting & 4x resolution enhancement. Free online tool.
Text to Music AI Generator
Text to music AI — generate royalty-free tracks, jingles & background music from text prompts. Create custom soundtracks for YouTube, podcasts & social media.
AI Voice Generator
AI voice generator — create realistic voiceovers, narration & text-to-speech in 50+ languages. Voice cloning, emotion control & video narration export.