If you see the term "libvpx" attached to a video file of this episode, it refers to the used to encode the file.
For those looking to watch or re-watch this episode, it's available through various streaming services. If you're interested in technical details, such as video encoding (libvpx), this would typically relate to video streaming or download settings, ensuring efficient playback and quality. young sheldon s03e03 libvpx