Quote:
Originally Posted by musicman
I've began reading the link in your post, is this apply to NTSC? It refers to 25fps, is that what video cameras and VCR's recorded at?
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Actually PAL and NTSC are obsolete
analogue TV transmission standards.
In the "digital world" these standards have
no meaning, except that a resolution of 720×480 pixels with a framerate of 29.97 is sometimes called "NTSC"
for historical reasons. The same goes for "PAL", which refers to 720×576 at 25 fps.
Anyhow, interlacing can be used with "NTSC" as well as "PAL", or even "HD" footage. The frame rate doesn't really matter either. But there always are
two "half pictures" stored in each "interlaced" frame.
For example, if you have an "interlaced" stream with 29.97 "interlaced" frames per second, than a "full rate" deinterlacer will output 59.94 progressive frames. Just like a 25 fps "interlaced" stream would result in 50 fps after deinterlacing...