Open Source Project: Scrcpy now works wirelessly!
Last week, we introduced our new open source project: scrcpy. The feedbacks were amazing, many people were interested in the application. ? This was very motivating, and a lot of work has been done in the last few days to fix important issues.? For example, mouse clicks now work on LG devices, a memory leak and a segfault on copy/paste have been fixed. For convenience, we also added some mouse shortcuts?: • middle-click presses the HOME button, • right-click presses the BACK button (on turn the screen on), • double-click on black borders resize the window to fit the device screen. But a specific feature was much requested: make it work over Wi-Fi. Wireless The application communicates with the device over adb, so it should be easy to make it work wirelessly: Connect to a device over Wi-Fi. It was not counting on an adb bug preventing adb reverse to work over a connection established by adb connect. Therefore, we implemented a workaround to fallback using adb forward (and reversing the client/server roles) when adb reverse fails. How to run scrcpy wirelessly? Here are the steps: 1. Connect the device to the same Wi-Fi as your computer 2. Get your device IP address (in Settings → About phone → Status) 3. Enable adb over TCP/IP on your device: adb tcpip 5555 4. Connect to your device: adb connect DEVICE_IP:5555 (replace DEVICE_IP) 5. Unplug your device 6. Run scrcpy as usual To switch back to USB mode: adb usb. As expected, the performances are not the same as over USB. The default scrcpy bit-rate is 8Mbps, which is probably too much for a Wi-Fi connection. Depending on the use case, decreasing the bit-rate and the resolution may be a good compromise: scrcpy –bit-rate 2M –max-size 800 For people in a hurry: scrcpy -b2M -m800 Note that while it now works over TCP/IP, this is not an optimal solution for streaming a video wirelessly, since the raw stream is still sent over TCP, where a packet loss is very bad for latency, due to head-of-line blocking. But it’s better than nothing! Under good conditions, it may work pretty well: On the video, scrcpy is started over USB on the laptop with Debian (on the right), and over Wi-Fi on the Mac (on the left). You can now build, install and run the new version! Enjoy!
