1. Open the VLC
2. A pop-up should appear beside the "Renderer" option - select your Chromecast device. If you don't see your Chromecast already listed, click "Scan."
How to cast VLC to Chromecast (PC only)
You can use the aforementioned method for Mac and PC, and PC users can also perform the steps to cast using a few right-clicks:
1. Start playing the media in VLC you want to cast to Chromecast.
2. Right-click on the video, then select "Playback," "Renderer," and the name of the Chromecast.
Your video should play immediately. You can use the VLC buttons to control the video playback on your Chromecast-connected TV.