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达芬奇的”主项目设置“中的”视频监看“里面有 HD 1080 PsF和 HD 1080P 两种选项。然后我在中文互联网上竟然搜不到他们有什么区别。
幸好WiKi上面有:http://en.wikipedia.org/wiki/Progressive_segmented_frame
Progressive segmented Frame (PsF, sF, SF) is a scheme designed to acquire, store, modify, and distribute progressive scan video using interlaced equipment and media.
With PsF, a progressive frame is divided into two segments, with the odd lines in one segment and the even lines in the other segment. Technically, the segments are equivalent to interlaced fields, but unlike native interlaced video, there is no motion between the two fields that make up the video frame: both fields represent the same instant in time. This technique allows for a progressive picture to be processed through the same electronic circuitry that is used to store, process and route interlaced video.
The PsF technique is similar to 2:2 pulldown, which is widely used in 50 Hz television systems to broadcast progressive material recorded at 25 frame/s, but is rarely used in 60 Hz systems. The 2:2 pulldown scheme had originally been designed for interlaced displays, so fine vertical details are usually filtered out to minimize interline twitter. PsF has been designed for transporting progressive content and therefore does not employ such filtering.
The term progressive segmented frame is used predominantly in relation to high definition video. In the world of standard definition video, which traditionally has been using interlaced scanning, it is also known as quasi-interlace[1] or progressive recording.[2]
太长就不翻译了。简单说PsF处理的是interlaced(隔行扫描)的 画面,大概就是处理1080i的摄像机拍摄的素材,分奇数行和偶数行,处理上场和下场的。
所以对于目前的主流摄影机素材,达芬奇里面选择的应该是1080P而不是1080PsF
在Lynda的达芬奇教程05_03-ConformXML.mp4 里面的03:42也讲到过,当时主讲人用的是BMCC的素材,然后把1080PsF换成了1080P。
如有错误烦请指正。 |
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