"Smart YouTube TV" (and its successor, ) is an open-source, third-party YouTube client for Android-based TVs and TV boxes. It is popular because it provides an ad-free experience, supports up to 8K resolution, and does not require Google Play Services to function.

It supports video streaming up to 4K and 8K resolution.

It is programmed to be unable to display YouTube’s pre-roll and mid-roll ads. SponsorBlock Integration:

The number 617740 refers to the specific commit or beta build number. The "Hot" tag (Hotfix) means the developer released this version to patch a recent break (usually when Google changes their API).