There is no store listing to tap, so the APK is sideloaded. Four ways to get it across, easiest first - the first one needs nothing but the remote in your hand.
In Downloader, type
That address hands back the current release's APK, so it never needs updating and there is no version number to type. Nothing else is behind it.
Install Downloader from the Play Store or the Amazon Appstore, open it, and type the address into its URL box. It fetches the current release straight from GitHub and offers to install it - read the prompts, then confirm.
1Install Downloader on the television and open it
2Type ventic.tv/apk into the URL box and press Go
3Let it download, then choose Install when it asks
4If Android says installs from this source are blocked, allow Downloader in the dialog it offers and confirm again
Install a transfer app - Send Files to TV is the usual one - on both the phone and the television. Download the APK on the phone from the download page, then send it across and open it on the television.
1Install the same transfer app on the phone and on the television
2Download the APK on the phone
3Send it to the television, and open the file it receives
4Allow installs from the transfer app when Android asks
Copy the APK onto a stick, plug it into the television and open it with a real file manager - X-plore or FX File Explorer. The file app that came with the television usually cannot install packages, and File Commander is not worth the adverts.
1Copy the APK onto a USB stick from a computer
2Install X-plore or FX File Explorer on the television
3Plug the stick in, open the APK from the file manager
4Allow installs from that file manager when Android asks
If the television already has developer options on, this is one command and no prompts on the screen at all. Find the address under Settings → Network, and the port is 5555.
1Settings → Device Preferences → About, then click Build seven times
2Turn on USB debugging (or Network debugging) in the developer options that appear
3adb connect 192.168.1.50:5555 - accept the prompt on the television
Ventic is sideloaded because a BitTorrent player is not something Google's store lists. Every APK comes from the release workflow on GitHub, built in the open from the tag it names.
Updating is the same as installing
Every release is signed with the same key, so a new APK installs over the old one and keeps your library, history and settings. The app puts a badge in the toolbar when there is a newer version.
What it runs on
Android TV or Google TV 8 or newer, which covers Chromecast with Google TV, the Nvidia Shield, Fire TV sticks and most television sets since 2018. Playback uses the device's own decoders through ExoPlayer.
If the install is refused
Android blocks installs per app, not once for the whole device: the permission has to go to whichever app is opening the file - Downloader, the transfer app or the file manager. The dialog offers the right settings screen; turn it on and open the file again.
Watching on something else too?
The same library runs on Windows, Linux, macOS, and on a phone or tablet - with the desktop builds playing in a real mpv window.