: Typically uses H.263 or H.264 for video and AMR or AAC-LC for audio.

Is It Illegal to Download YouTube Videos + How to ... - Crayo AI

If you want to stay safe, legal, and within YouTube's rules: * Use official offline features. YouTube Premium for offline viewing.

The keyword refers to a specialized online content consumption trend where users convert high-definition YouTube videos into the compact 3GP (3rd Generation Partnership Project) file format for offline viewing on legacy mobile devices and feature phones .