The phrase refers to the process of acquiring video content from the YouTube platform and saving it in the Moving Picture Experts Group Layer 4 (MP4) file format for local storage. This commonly involves utilizing third-party websites or software applications designed to facilitate the download and conversion of YouTube videos into MP4 files. For instance, a user might employ such a tool to save an educational lecture from YouTube for offline viewing.
The significance of obtaining YouTube videos in the MP4 format lies in enabling offline access to content, circumventing the need for a continuous internet connection. This is particularly beneficial in situations with limited or unreliable internet access. Furthermore, it allows users to archive content they deem valuable or may no longer be available on the platform in the future. Historically, this practice has been driven by consumer demand for greater control over accessed media.