一樣是在 Hacker News Daily 上看到的專案,弄出便宜的 KVM over IP 裝置:「TinyPilot: Build a KVM Over IP for Under $100」。
主要是他在 Twitter 看到了這則,裡面提到了「Video Capture Cards, HDMI to USB 2.0, High Definition 1080p 30fps, Video Record via DSLR,Camcorder, Action Cam for Live Broadcasting, Live Streaming, Gaming, Teaching, Video Conference」這個產品:
Got one of those "camlink" USB converters because I was curious about em, and WHOAH I was shocked. UVC output, 20ms delay and signal looks to be properly grabbing 1080P@30. Single chip solution under a small sink and costs under $20. What in the heck is this. pic.twitter.com/J7HYM3cf3M
— Arsenio Dev (@Ascii211) June 4, 2020
而作者在 eBay 上面也找到了一樣的裝置,但是更便宜 (所以是「親,$11 包郵」?XDDD):
接下來是在接觸 pikvm 的時候發現了 µStreamer 這個專案:
µStreamer is a lightweight and very quick server to stream MJPG video from any V4L2 device to the net.
最後則是發現他使用的 HDMI-to-USB 裝置直接就是輸出 MJPG 格式,連 transcoding 都不用做了,大幅把 latency 降到 200ms:
其實從作者的文章可以知道,你想做的事情說不定在地球上已經有其他人做差不多了,重點是要找出來,而不需要自己硬幹 XD