Editing MPEG-2 (section)

==History==
MPEG-2 evolved out of the shortcomings of MPEG-1.

MPEG-1's known weaknesses:
* An audio compression system limited to two channels (stereo)
* No standardized support for interlaced video with poor compression when used for interlaced video
* Only one standardized "profile", constrained parameters bitstream (CBP), which was unsuited for higher resolution video. MPEG-1 could support 4K video but there was no easy way to encode video for higher resolutions, and identify hardware capable of supporting it, as the limitations of such hardware were not defined.
* Support for only one [[chroma subsampling]], 4:2:0

Sakae Okubo of [[Nippon Telegraph and Telephone|NTT]] was  the [[ITU-T]] coordinator for developing the [[H.262/MPEG-2 Part 2]] video coding standard and the requirements chairman in [[MPEG]] for the MPEG-2 set of standards.<ref>{{cite web |url=http://www.itu.int/ITU-T/worksem/hnhs/cvs/hnhs_0604_s7p0_sokubo_cv.doc |publisher=[[ITU]] |title=Sakae Okubo |access-date=2017-01-27 |url-status=live |archive-url=https://web.archive.org/web/20050302032129/http://www.itu.int/ITU-T/worksem/hnhs/cvs/hnhs_0604_s7p0_sokubo_cv.doc |archive-date=2005-03-02 }}</ref> The majority of patents underlying MPEG-2 technology are owned by three companies: [[Sony]] (311 patents), [[Technicolor SA|Thomson]] (198 patents) and [[Mitsubishi Electric]] (119 patents).<ref name="mpegla"/> [[Hyundai Electronics]] (now [[SK Hynix]]) developed the first MPEG-2 SAVI (System/Audio/Video) decoder in 1995.<ref name="hynix90s">{{cite web |title=History: 1990s |url=https://www.skhynix.com/eng/about/history1990.jsp |website=[[SK Hynix]] |access-date=6 July 2019 |archive-date=5 February 2021 |archive-url=https://web.archive.org/web/20210205032928/https://www.skhynix.com/eng/about/history1990.jsp |url-status=dead }}</ref>

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