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专业屏幕录制：摄像头画中画、系统声+麦克风混音、4K/60fps、定时分段与多录制管理，本地处理不上传。
Preview appears here once recording starts
No recordings yet — they will appear here
Recording happens locally in your browser; files are never uploaded. 4K/60fps and system audio depend on your browser and the chosen source. Recordings are kept only for this session — download them promptly.
这是一款运行在浏览器里的专业屏幕录制工具，无需安装。相比基础版，它把"录得清、录得全、管得好"做到位：
录出来没有声音？
录系统声需在共享弹窗勾选"分享音频"；录麦克风需允许麦克风权限。两者可同时开。
能边录屏边出镜吗？
可以，开启「摄像头画中画」即可，画面会合成到所选角落。
文件很大怎么办？
降低分辨率或帧率（如 1080p/30fps）、优先 WebM 可明显减小体积；长时间录制建议分段。
