Yes. To ensure your signal can carry the high bandwidth of 4K video, you need a cable. Older standard cables might cause picture dropouts or fail to display the 4K signal at all.
Tubi is another well-known free service that, on certain occasions, has offered 4K content. Although its library is not completely in Ultra HD, the platform has shown its ability to broadcast major events in this quality, such as Super Bowl LIX. It is a platform to keep an eye on, as its 4K offering is expected to expand. paginas para ver videos en 4k