If screen mirroring not working

Troubleshooting with alfacast app

There are various problems in the process of screen mirroring. Very often the user does not understand how to act in such situations. We provide a number of actions to solve these problems. The main problems are:
• Network node detection issues
• Connection problems
• WiFi / Ethernet router issues
• Problems during streaming process
• Other compatibility issues related to devices and hardware
Here we suggest some steps to troubleshoot the issues described above. Any user can follow these steps to get rid of screen mirroring issues.

The alfacast application is independent and you need to install at least two copies of the application. For example: for streaming on first device and for viewing on second.

The devices should be connected to the same network directly, without any network switches, repeaters, etc. If your device is connected in two ways to the same router (for example: WiFi and Ethernet), please use one of the connection methods.

The alfacast application uses UDP unicast / broadcast transmission. There are some UDP broadcast problems with different network routers. Please make sure that your router has correct behaviour with the UDP broadcast protocol.

If you have streaming problems you can try to follow through the next steps:
• If you want to stream video from YouTube / Twitch / Vimeo / etc services and you  have stable disconnect on viewer side after start of streaming then please decrease video stream resolution in appropriate service on streamer device
• If you have disconnect message and it contains the words: “Failed on start encoder” or “Failed on start decoder” then this streaming configuration is not supported by your hardware device codecs
• If video streaming quality is poor, try moving your devices closer to your Wi-Fi router

If you have some kind discovery or connectivity problems you can review Router Setup page.