If you’ve just downloaded Young Sheldon Season 3, Episode 18 and are staring at a black screen, hearing audio but no video, or getting a cryptic "Codec missing: libvpx" error—you’re not alone.

Disclaimer: This guide assumes you own a legal copy of the episode. We do not support piracy.

This episode (and many other web-downloads from that era) is often encoded using the or VP9 video codec, which relies on the libvpx software library. If your media player doesn’t support it natively, you’ll run into problems.