挑战
现有的移动视频编辑器缺乏与后端 AI 分析的集成。创作者必须在桌面分析工具和移动编辑器之间切换，导致：
- 跨设备的工作流程碎片化
- 无法在移动设备上利用讲话人检测数据
- 移动设备上的音频修剪和同步功能有限
我们的解决方案
我们开发了一款基于 Flutter 的跨平台移动应用程序，可与 AI 分析后端无缝连接，使创作者能够直接在手机上通过 AI 智能上下文编辑视频。
架构
- 框架：Flutter 3.4.3+，支持 iOS、Android 和 macOS
- 状态管理：使用 Provider 模式实现响应式 UI 更新
- 视频处理：使用 FFmpeg Kit 进行设备端渲染，并集成原生 video_editor
- 网络：使用 Dio HTTP 客户端并集成 API
- 本地化：支持英语和中文
主要功能
- AI 连接编辑 - 查看活跃讲话人时间线并进行相应剪辑
- 视频修剪与裁剪 - 通过手势控制实现帧级精确编辑
- 音频同步 - 多轨音频对齐与修剪
- 媒体管理 - 从相册、相机或文件系统导入
- 双语支持 - 全面支持英语和中文本地化
成果
技术栈
常见问题
MicrocosmWorks built the rendering pipeline using a shared C++ core with platform-specific GPU backends, using Metal on iOS and Vulkan on Android. This ensures identical filter application, color grading, and compositing results across platforms, with a test suite that validates frame-by-frame output parity on reference devices.
MicrocosmWorks integrated on-device ML models for automatic scene detection, subject tracking, audio beat detection for music sync, and content-aware cropping suggestions. These models run entirely on-device using Core ML and TensorFlow Lite, ensuring instant analysis without uploading video to the cloud.
MicrocosmWorks implemented a proxy-based editing workflow where the app generates lightweight 720p proxy files for timeline editing and applies the edit decision list to the original 4K source during final export. The memory-mapped file I/O system keeps peak RAM usage under 300MB even when editing hour-long 4K footage.
Yes, MicrocosmWorks built preset export profiles for TikTok, Instagram Reels, YouTube Shorts, and standard YouTube that automatically apply the correct aspect ratio, resolution, bitrate, and codec settings. Users can preview how their edit will appear in each platform's player before exporting.
MicrocosmWorks delivers mobile video editing platforms at rates of $25-$50/hr, with a full-featured editor including the C++ rendering core, AI analysis features, and social export functionality typically requiring 800-1200 development hours. The cross-platform architecture saves approximately 40% compared to building separate native iOS and Android apps.