Originally Posted by TagMclaren:
“Yes the transmission method is 1080 50 i but the source material is very often 25 PSF. Nearly always used for drama and has been inapropriately used on things like Electric proms and others like Michael Macintyre IIRC. It suffers from motion judder, but is very easy to deinterlace as you can simply stitch the two fields back together.
My question to you is if the sport (for example) produced at 50i because it has smoother motion, is simply deinterlaced into one frame 25 fps, why wouldn't it's motion suddenly suffer from the judder that afflicts film/25 psf?
Can you see it's temporal resolution would be lost?
That really doesn't appear to be the case on my non-frame interpolating plasma.
It depends how the picture is de-interlaced.”
“Yes the transmission method is 1080 50 i but the source material is very often 25 PSF. Nearly always used for drama and has been inapropriately used on things like Electric proms and others like Michael Macintyre IIRC. It suffers from motion judder, but is very easy to deinterlace as you can simply stitch the two fields back together.
My question to you is if the sport (for example) produced at 50i because it has smoother motion, is simply deinterlaced into one frame 25 fps, why wouldn't it's motion suddenly suffer from the judder that afflicts film/25 psf?
Can you see it's temporal resolution would be lost?
That really doesn't appear to be the case on my non-frame interpolating plasma.
It depends how the picture is de-interlaced.”
Two fields derived from the same source as in a telecine conversion of a frame of film is effectively the same as 1080p25 as there is no motion between the two fields.. Simply building the two fields into a frame buffer will give the same result as a 1080p25 signal.




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I am not positive as to what my plasma (non frame interpolating) is doing with the deinterlacing.