h.261 wikipedia - EAS
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H.261 is an ITU-T video compression standard, first ratified in November 1988. It is the first member of the H.26x family of video coding standards in the domain of the ITU-T Study Group 16 Video Coding Experts Group (VCEG, then Specialists Group on Coding for Visual Telephony). It was the first video
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See moreThe first digital video coding standard was H.120, created by the CCITT (now ITU-T) in 1984. H.120 was not usable in practice, as its performance was too poor. H.120 was based on differential pulse-code modulation (DPCM),
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See moreThe basic processing unit of the design is called a macroblock, and H.261 was the first standard in which the macroblock concept appeared. Each macroblock consists of a 16×16 array
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See moreThe LGPL-licensed libavcodec includes a H.261 encoder and decoder. It is supported by the free VLC media player and MPlayer multimedia players, and in ffdshow and FFmpeg decoders projects.
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See moreThe following companies contributed patents towards the development of the H.261 format:
• Hitachi
• PictureTel Corp....
See moreWikipedia text under CC-BY-SA licenseWas this helpful?Thanks! Give more feedback H.261은 1988년 11월에 비준된 ITU-T 영상 부호화 표준이다. H.261 표준은 ITU-T 영상 부호화 전문가 그룹(VCEG) H.26x 영상 부호화 표준 중에서 첫 번째 구성원이며, 실제 분야에서 효과를 거둔 첫 번째 영상 코덱이다.
H.261은 원래 데이터 레이트가 64 kbit/초인 ISDN 망 전송을 위해 설계되었다. 부호화 알고리즘은 40kbit/s와 2Mbit/s 사이의 영상 비트레이트로 작동될 수 있도록 설계되었다.Wikipedia · Text under CC-BY-SA licenseRelated searches for h.261 wikipedia