Often used in cinematic repacks to maintain 5.1 surround sound integrity.
So, why are people searching for "640 kbps songs"? 640 kbps songs repack
The primary finding of this report is that Therefore, repacking or transcoding to "achieve" higher quality from a 640 kbps source is technically impossible within the MP3 standard, and converting to other formats offers no quality gain. Often used in cinematic repacks to maintain 5
Technical Report: Analysis of 640kbps Audio Files and "Repacking" Feasibility 640 kbps songs repack
640 kbps AC3 is the maximum specification for standard Dolby Digital, making it compatible with almost all legacy home theater receivers and media players.