Editing Television (section)

====SD====
{{main|Standard-definition television}}

Standard-definition television or SDTV refers to two different resolutions: [[576i]], with 576 [[interlaced video|interlaced]] lines of resolution, derived from the European-developed [[PAL]] and [[SECAM]] systems, and [[480i]] based on the American National Television System Committee [[NTSC]] system. SDTV is a television system that uses a resolution that is not considered to be either [[high-definition television]] ([[720p]], [[1080i]], [[1080p]], [[1440p]], [[4K UHDTV]], and [[8K UHD]]) or [[enhanced-definition television]] (EDTV [[480p]]). In North America, digital SDTV is broadcast in the same [[4:3]] aspect ratio as NTSC signals, with widescreen content being [[center cut]].<ref>{{cite web|url=http://www.fcc.gov/cgb/consumerfacts/digitaltv.html|title=Digital Television|date=28 February 2013|access-date=25 May 2016|archive-date=8 March 2008|archive-url=https://web.archive.org/web/20080308190335/http://www.fcc.gov/cgb/consumerfacts/digitaltv.html/|url-status=dead}}</ref> However, in other parts of the world that used the PAL or SECAM color systems, standard-definition television is now usually shown with a [[16:9]] [[aspect ratio (image)|aspect ratio]], with the transition occurring between the mid-1990s and mid-2000s. Older programs with a 4:3 aspect ratio are shown in the United States as 4:3, with non-ATSC countries preferring to reduce the horizontal resolution by anamorphically scaling a [[pillarbox]]ed image.