Editing Standard-definition television (section)

== History and characteristics ==
SDTV originated from the need for a standard to digitize analog TV (defined in [[BT.601]]) and is now used for digital TV broadcasts and home appliances such as game consoles and DVD disc players.<ref name=":02" /><ref>{{cite web |title=BT.601: Studio encoding parameters of digital television for standard 4:3 and wide screen 16:9 aspect ratios |url=https://www.itu.int/rec/R-REC-BT.601/ |publisher=ITU}}</ref>

Digital SDTV broadcast eliminates the [[Ghosting (television)|ghosting]] and [[Noise (video)|noisy images]] associated with analog systems. However, if the reception has interference or is poor, where the error correction cannot compensate one will encounter various other artifacts such as image freezing, stuttering, or dropouts from missing [[Intra-frame coding|intra-frames]] or blockiness from missing [[macroblock]]s. The audio encoding is the last to suffer a loss due to the lower bandwidth requirements.{{Citation needed|date=April 2024}}

Standards that support digital SDTV broadcast include [[DVB]], [[ATSC]], and [[ISDB]].<ref name=":1" /> The last two were originally developed for [[HDTV]], but are also used for their ability to deliver multiple SD video and audio streams via [[multiplexing]].