A:
4K video streaming is available through the Sony Entertainment Network (SEN) application built in on the TV.
When streaming movies/Tv programs using Netflix you can select your desired quality of the video through the Netflix website.
1.Log in to the site using your e-mail and password.
2.Click Your Account & Help.
3.Click Manage Video Quality.
4.Select the desired quality.
*Good quality (up to 0.3 GB per hour)
*Better quality (up to 0.7 GB per hour)
*Best quality (up to 1 GB per hour, or up to 2.3 GB per hour for HD)
Although the YouTube service supports 4K resolution, because the content is posted by YouTube users, there is no guarantee that the video was created in 4K or is up-converted 4K resolution.