Editing DVB (section)

==Content==
{{unreferenced section|date=May 2023}}
[[Digital video]] content is encoded using [[discrete cosine transform]] (DCT) based [[video coding standards]], such as the [[H.26x]] and [[MPEG]] formats. [[Digital audio]] content is encoded using [[modified discrete cosine transform]] (MDCT) based [[audio coding standards]], such as [[Advanced Audio Coding]] (AAC), [[Dolby Digital]] (AC-3) and [[MP3]].

Besides [[digital audio]] and [[digital video]] transmission, DVB also defines data connections (DVB-DATA - [[European standards|EN]] 301 192) with [[return channel]]s (DVB-RC) for several media ([[Digital Enhanced Cordless Telecommunications|DECT]], [[Global System for Mobile Communications|GSM]], [[Public Switched Telephone Network|PSTN]]/[[Integrated Services Digital Network|ISDN]], [[satellite]] etc.) and protocols ([[DVB-IPTV]]: [[Internet Protocol]]; DVB-NPI: network protocol independent).

{{anchor|DVB-TXT|DVB-VBI|DVB-SUB|}}Older technologies such as [[teletext]] (DVB-TXT) and [[vertical blanking interval]] data (DVB-VBI) are also supported by the standards to ease conversion. However, for many applications more advanced alternatives like DVB-SUB for subtitling are available.