Low-Latency Wireless Display I had a Windows laptop sitting around and wanted to use it as a seco...

Low-Latency Wireless Display I had a Windows laptop sitting around and wanted to use it as a seco...Low-Latency Wireless Display I had a Windows laptop sitting around and wanted to use it as a seco...

The network for creativity

Join 1.25M professional creatives like you

Connect with clients, get discovered, and run your business 100% commission-free

Creatives on Contra have earned over $150M and we are just getting started

Back to feedPost

Harshit Joshi

• Aug 22

Low-Latency Wireless Display

I had a Windows laptop sitting around and wanted to use it as a second display for my Mac.

The problem: the laptop had no video input. Its HDMI/USB-C ports could output video, but couldn't receive it. I also wasn't interested in paying for a subscription just to mirror a screen.

So I built my own wireless display pipeline over the local network.

Mac → WebRTC → Windows

What I built

Native macOS capture using Swift + ScreenCaptureKit

Hardware-accelerated video encoding with VideoToolbox

Direct LAN streaming using WebRTC

Lightweight WebSocket signaling

Windows desktop client built with Tauri + React

GPU hardware decoding on Windows

4K / 60 FPS streaming

Essentially zero noticeable display latency

The first working version was surprisingly fast to build — just 2 prompts — and then I spent the time tuning the actual pipeline, decoding, networking, and performance.

No cloud streaming. No subscription. No capture card.

Just a Mac and a Windows laptop communicating directly over Wi-Fi.

AI Development WebRTC FastAPI Swift

Eric Moore

pro

• Aug 23

The two prompts got you to a working version, but the tuning is what made it usable. I'd test it on a busy home network next, because 4K at 60 FPS can feel perfect in a quiet room and fall apart when other devices start competing for Wi-Fi.

Milan Bundalo

pro

• Aug 21

Not every company needs to look like the next big startup.

Reforma was created for established businesses, the kind that already have the experience, results, and reputation, but need a website that reflects it.

Inside the template:

• 3 distinct homepage layouts • Multiple About and Contact pages • CMS-powered services, case studies, and blog • Carefully built interactions throughout • Fully responsive Webflow development

Developed by me in Webflow.