Playing online videos from Youtube, Facebook... on Chromecast device is an easy task but playing local videos such as MKV, AVI, WMV... on Chromecast seems to be impossible.
AirStreamer enables playing MKV, AVI, WMV... videos on Chromecast device.
No video conversion, no HDMI cable, no configuration. Just open and enjoy your videos on the TV screen.
AirStreamer supports 5.1 surround audio.
System requirements:
• Mac 2011 and later.
• macOS 10.9 and later.
• Chromecast 2 or Chomecast Ultra.
• IPv4 local network.
- Fix bugs.
HD Player 
AirStreamer - for Apple TV 
HD Player Pro 