VLC Player, in his version 3.0, will be compatible with the HDMI Chromecast Google.
VLC 3.0 will also support the encoding VP9 format developed by Google.
Nevertheless, it will take that version 2.2 of VLC is available. Indeed, this will be the last version of version 2 before the release of VLC 3.0.
Chromecast support is, however, at the order of the day in the iOS and Android of VLC version