Share your screen to a projector with only a web-browser.

Last update: Nov 17, 2022

Overview

picklecast - Simple Screen Cast Receiver

Screen share to a RaspberryPi or display computer connected to a projector or TV.

Quickstart

Install and start the server on the display computer or RPi:

$ pip install picklecast
$ picklecast
Server address: 192.168.1.100
Display URL: http://localhost:8443/display   http://192.168.1.100:8443/display
Client URL: http://192.168.1.100:8443/

Then open the display URL in a web-browser on the display computer. You can now share your screen from a personal device by visiting the client URL.

Optionally install as a user service on Linux to keep it running the background:

picklecast install_service
systemctl --user daemon-reload
systemctl --user start picklecast

How it Works

Picklecast is just a Python program that serves HTML and relays handshake messages between two browsers. The streaming and displaying is handled in Javascript in the display/client browsers using the WebRTC api.

Caveats

Audio sharing only supported when sharing from Chrome on Windows (bugzilla).
Currently there can be only one browser open to the display URL at a time
Only desktop browsers are supported, as mobile browsers don't support getDisplayMedia

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Comments

websocket is not created correctly in a proxied environment

Since the websocket address is created using window.location.hostname, any information regarding the true URL (e.g. the custom port) is missed. https://github.com/Evidlo/picklecast/blob/1ae55d17b0bf4c8b5ff5f30fea1f84f9bd46bd33/picklecast/webrtc.js#L25

One possible fix would be to use window.location.href and strip the https:// part and the display part, if exists.

Example: window.location.href.replace("https://","").replace("display","").

opened by wgnann 1

Share your screen to a projector with only a web-browser.

Related tags

Overview

picklecast - Simple Screen Cast Receiver

Quickstart

How it Works

Caveats

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