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Old February 6th, 2010, 07:57 AM   #1
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Location: Dayton, Ohio
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What does Progressive mean to CineForm?

I've always used cameras that capture video as 60i, recently 1920x1080 29.97 f/r, but I've thought that if I used HDLink to convert to Progressive when I converted the original AVCHD footage to Cin.AVI to make a "master", that was the way to go.

I recently wondered what it means to Cineform to convert interlaced footage to progressive. Does it remove one of the two fields per frame and then just double the horizontal lines, effectively halfing the vertical information?

Or does it combine the two fields in each frame to create a progressive frame with all the lines from both the fields? Or maybe something else.

If it's halving the data, I'm not sure where the ability to create Progressive from Interlaced, fits into the picture.
John Rich
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Old February 6th, 2010, 10:11 AM   #2
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If you search the forum here, you'll find more info on the method Cineform uses to deinterlace. I know that it isn't a simple halving of the data.... it does a very nice job.

I capture my 60i acquisition, and archive it in native 60i (CFHD.avi). This keeps my options open down the road. I edit in the native format as well, and then apply any deinterlacing, scaling, etc... globally to the finished edit, ensuring a suitable output for what ever distribution is called for.

TMPGenc is the choice for those processes.

A question for your consideration is why limit your native acquisition in any way when you don't have to?
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