I'm not sure how you would to a smart tv either. I've done it through Apple TV.
You mean wirelessly? I know I can do it from my laptop to my Firestick. Go to Settings on the Firestick, select Display&Sounds and then select Enable Display Mirroring. Then from the laptop I use the hotkey for projector control and there is a button to connect to the Firestick. Probably similar on a Smart TV.
But can you make the destination (Chromecast device) an extended or 2nd screen, which you'd need to do to have videos or karaoke lyrics only displayed. I think I only got it to clone the main display, though I only had it for a couple weeks before I gave it to my son.You can cast your entire desktop to Chromecast. Just select it as a source.
If you're only trying to stream the video player from VDJ, just choose your wireless/wired monitor (TV) as the video display in the VDJ menu.
I haven't specifically tried it with VDJ. Not sure if VDJ will recognize it as a source, but here's how to extend the display.But can you make the destination (Chromecast device) an extended or 2nd screen, which you'd need to do to have videos or karaoke lyrics only displayed. I think I only got it to clone the main display, though I only had it for a couple weeks before I gave it to my son.