VLC is a cross-platform multimedia player used to play all kinds of audio and video files. By installing the VLC app, you can watch all your locally stored files. VLC is one of the free apps where you need not pay for the feature and get an ad-free experience. Most of the popular apps are under development for Google TV, and this media player is one among them. Although the VLC media player app isn’t compatible with Chromecast with Google TV, you can still access it. i.e., you can sideload the VLC app on Google TV using Downloader. In addition to that, VLC is compatible with Chromecast. So, you can also cast the VLC app to your TV using the Cast icon.
How to Sideload VLC on Chromecast with Google TV
 You need to download the Downloader on Google TV.
 Select the Profile menu and click the Settings option.
 From the menu, select the System option followed by About.
 Tap on the Android TV OS build option seven times, and the developer pop-up will appear.
 Then, return back to the Settings option and select the Apps menu.
 Now, select the Security & Restrictions option and click the Unknown sources.
 Search for the Downloader app and enable the Unknown Sources toggle.
 Open the Downloader app and select the Search bar.
 Type the VLC download link in the respective field and click the Go button.
 The VLC apk file will begin to download. After the download, tap the Install button.
 Now, open the VLC app and start watching the local files on your TV.
Related: How to Install and Stream using VLC on Firestick
How to Cast VLC on Google TV
 Make sure to connect your Google TV and smartphone under the same Wi-Fi connection.
 Then, open the VLC Media Player app on your smartphone (Android or iOS).
 Now, click the Cast icon.
 The screen will show your Google TV, click on it.
 Select the local files on your smartphone, and it will be cast on your Google TV.
 In case, if you want to stop casting, once again tap on the Cast icon and click the Disconnect option.
Yes, just like Google TV, you can cast the VLC to Chromecast with ease.
The best VLC alternatives you can use on Google TV include MX Player, Kodi, KM Player, GOM Player, etc.
As of now, there is no official notice from both VLC and Google. We have to wait until the official new release.
You may solve the issue by checking the network configuration, disconnecting the VPN, updating the VLC app and device firmware, etc.