YouTube has announced it will use AI to upscale low-resolution videos to make the viewing experience better on high-resolution displays.

YouTube is preparing to support higher-quality content, including larger video upload sizes and higher file size limits for thumbnails.

Small tweaks sure can make big differences. The YouTube mobile app, on both iOS and Android, now makes it the tiniest bit easier — at least for some users — to keep a handle on their data use. So ...