Before YouTube Red, YouTube Premium, or widespread offline playback, users had to rip or download videos from YouTube to watch them later. This was the "tube-to-phone" pipeline.
: Incorporating AAC-LC audio instead of narrowband AMR, which provides a clearer, less "flat" sound. Higher Bitrate 3gp king youtube extra quality
Here is the text you likely need — either as a or as a descriptive line for a website, file name, or forum post: Before YouTube Red, YouTube Premium, or widespread offline