What does Syncplay do?

Syncplay synchronises video playback across multiple instances of MPC-HCVLCmplayer2 and mpv. Pausing, unpausing and seeking are all synchronized over the Internet, giving everyone playing the same file in the same virtual room a shared viewing experience. Use alongside VoIP software, e.g. Mumble or Skype.

“3..2..1.. Play! …No wait, pause! …No wait, argh!” — What people had to shout before Syncplay.

Syncplay demonstration

Where can I get Syncplay 1.2.9a?

Get Syncplay (Windows) Get Syncplay (Linux) Get Syncplay (OS X)

Source code: https://github.com/Uriziel/syncplay/

OSX users: There are now new and improved instructions for getting Syncplay to work with OSX!
mpv users: Please use the latest version of Syncplay and mpv to ensure compatibility.

How can I report bugs?

…But first check out the Support section to see if the problem can be resolved.