reddit · SideProject · 09-30 04:50 55 分 ← 返回列表

I built an AirPlay receiver for Windows and found out why it got choppy after a minute: Windows' delayed TCP ACKs

I've been building AirMirror Pro since August. It's free on the Microsoft Store (Pro is an optional add-on for recording). This morning I shipped 3.1. A few hours later I noticed mirroring would slide to under 10 fps after about a minute, even though the iPhone's own screen looked perfect. The clue was a Roku: same phone, same Wi-Fi, and it stayed smooth. So the problem was on my side. The iPhone's own stats showed it dropping 52 of every 60 frames because its send queue was full, even wi

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痛点：Windows 用户需要稳定低延迟的 AirPlay 接收/投屏，但 Windows 默认延迟 TCP ACK 会导致长时间串流掉帧。

目标用户：需要在 Windows 上接收 iPhone/iPad AirPlay 投屏的普通用户、演示或录屏用户。

证据：It's free on the Microsoft Store (Pro is an optional add-on for recording). ... 113 installs in two weeks. Still free.

变现：免费基础版 + 付费 Pro 附加功能，如录制、无水印、画质/帧率增强、多设备支持或商业授权。

MVP：做一个 Windows 端 AirPlay 接收器，优先解决长时稳定投屏，先支持镜像和基础控制；2 周内用现有 AirPlay 协议库搭出可安装版本，Pro 只做录制导出。

竞品：AirServer、LonelyScreen、5KPlayer、Reflector、ApowerMirror

摘要：作者从 8 月开始做 AirMirror Pro，一个 Windows 端 AirPlay 接收器，免费上架 Microsoft Store，Pro 可选录制。上线后遇到约 1 分钟后掉到 10fps 以下的问题，定位为 Windows 默认延迟 TCP ACK，修复后 7 分钟平均 53fps。两周 113 次安装，仍在免费阶段，付费意愿尚不明确。