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'''Progressive segmented Frame''' (PsF) is a [[High-definition_television|High Definition]] mastering video format used to store [[progressive scan|progressive]] content on [[interlaced]] media. Unlike [[High-definition_television|broadcast video formats]], PsF is not intended for direct delivery to end users. PsF was designed as a unified world-wide standard to simplify the process of converting cinematic content to the various video standards, and as means for video exchange between the networks and broadcasters worldwide.<ref>{{cite web|url=http://www.tech-notes.tv/Jim/Articles/24vs48sF.html|title=A discussion of 24p frame and the new 48sF frame format}}</ref>
Progressive segmented Frame is similar to interlaced video but lacking motion between the fields. Each "true" progressive frame is separated into "segments", with the odd lines in one segment and the even lines in the other segment. This allows for a progressive picture to be processed through the same common electronic circuitry that is used to store, process and route interlaced video. The primary difference between PsF and interlaced video is motion. In PsF there is no motion between the two segments that make up the "progressive" frame while in interlaced there is typically motion between the "fields". The signal is played back at [[1080i]] but when viewed, it is seen as true [[1080p]]▼
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PsF is not an alternative to [[Telecine]] 2:3 pulldown. [[Telecine]] 2:3 pulldown is a method of converting 23.976PsF to 59.94i for broadcast in [[NTSC]].
Sony's [[CineAlta]] series of cameras are capable of recording directly to 23.976PsF, 24PsF and 25PsF on HDCAM tape along with the interlaced versions of those signals.
==References==
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[[Category:Film and video technology]]
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