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Interlace problems

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steve knattress
Interlace problems
on Nov 1, 2012 at 7:31:35 pm

Sorry another interlace-ish problem, I have posted this in the sony ex forum but got no reply.

Has any one else had problems with 1080i50 xdcam ex hd422 footage shot with pmw500 cameras
I inherited a broadcast programme where the footage had been transferred using sony log and transfer on a MBP into a FCP7 1080i50 interlaced timeline.
The only files I have available are the converted .mov files, no SxS images from the several cameras which also show the same problem when viewed separately in FCP viewer.

The interlaced footage was giving problems, a moving hd picture as viewed on a broadcast monitor via a kona card showed horizontal " interlace" type problems with line tearing on moving edges. A frame freeze also had these artefacts. ( but no inter field jitter on movement). Archive material was fine.

Obliviously the Mac Pro single field vdu display was fine, as was the Mbp so went in noticed when being captured.

I tried a field shift filter and the result also exhibitied the same problems
A de- interlace filter gave "acceptable" broadcast picture results but obviously are single field and very " filmic".

( on Mac Pro putting the de-interlace filter on a 45 min programme required a 3 hour render to play on a Mac Pro from a single disk fw 800 onto the mac pros internal raid, does that sound right.)

Any suggestions for next time?

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