How to get involved

Syncplay is developed using Python. You could help by reporting bugs, working on the code, or providing translations to other languages. The project is hosted at and our IRC channel is #syncplay on You can also e-mail us via

Core developers

  • Et0h – GUI/Player/NSIS/message lead
  • Uriziel – Syncplay architecture/protocol/Twisted/networking/threading lead

Active non-core leads

  • albertosottile – macOS Lead (also works on, Italian translation, etc)

Other contributors

Thanks should also go to:

  • The media player developers, especially those who directly supported Syncplay (e.g. vBm from MPC-HC and jb from VLC)
  • Those who posted bug reports which made us aware of various issues (including those people thanked in the Syncplay Changelog and relevant commit messages)
  • Those who developed the libraries and platforms which Syncplay relies on (e.g. Python, Twisted, py2exe, PySide and NSIS)
  • Those who developed the tools we use to develop and promote Syncplay (e.g. PyCharm, Eclipse and WordPress)
  • Everyone who has donated, spread the word, or given us feedback on the project

Getting a Python set-up for Windows Syncplay development

1)  Install Python 2.7.* from and check the box to add the python path in the installer.
2) Install the Microsoft Visual C++ Compiler for Python 2.7 and Microsoft Visual C++ 2015 Redistributable Update 3.
3) Download and run it via Python (double click the file or run ‘python’ via cmd.exe command line) as per
4) Run the following (e.g. via cmd.exe command line):

pip install -U PySide
pip install -U twisted
pip install -U pypiwin32

If you intend to make installers or executables:

5) Also run: pip install -U py2exe_py2

6) Add an empty file in the zope directory (‘C:\Python27\Lib\site-packages\zope’) to resolve a known issue with py2exe.

7) Get NSIS to create the installer, installing it to ‘C:\Program Files (x86)\NSIS\’ (probably the default directory).

8) Use our custom tool.

9) Label all your installers/builds as ‘unofficial’ to avoid confusion.

For the development itself we use PyCharm Community Edition and Git.

Note: You’ll need to run the Syncplay installer to ensure the VLC/mpv interface scripts are installed, or to install them manually.


Syncplay started out as a fork of SyncPlay, which emerged from #anime&manga on as a tool to facilitate watching videos with friends and commenting on them (the videos, not the friends) ‘live’ on IRC or Mumble. Uriziel came up with the idea as a replacement to having to shout “3..2..1.. Play! …No wait, pause!”, but the initial code for SyncPlay was mostly written by Tomasz “Fluxid” Kowalczyk. Fluxid’s work on SyncPlay started in January 2012 and ended in February 2012.