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jittery QT playback

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Murray Fergusonjittery QT playback
by on Oct 7, 2009 at 2:37:41 am

I have had some QT files sent to me, which I need to incorporate into a program. The QT's are ex HDV and have been converted to SD 8 bit uncompressed. When I import them into M100 they are jittery, a bit like a progressive look. I can't change the files, but was wondering what I might try to smooth out the motion.
Might be a field order thing or something, but nothing I try seems to work. All this is in Pal. M100 version 13.0.2 QT 7.6.
Any help appreciated. Thanks.

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Wickham StrubRe: jittery QT playback
by on Oct 7, 2009 at 3:42:14 am

There are a lot of undefined variables here but, off the top of my head...

Try exporting from QTPro as DV.

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Floh PetersRe: jittery QT playback
by on Oct 7, 2009 at 6:23:49 am

If they are coming from HDV, they could be progressive. Try stepping to the frames with COMMAND-Arrow left or COMMAND-Arrow Right to step through the fields to see if the field order is correct. Maybe they have been shot progressive with a wrong shutter angle, or they have been shot interlaced and have been converted to progressive by dropping a field.
Or they have been scaled down from HD to SD incorrectly
Or they initially were shot at a different frame rate

In most cases there is not much that you can do about this, except trying to figure out what went wrong and to see if there is a way to avoid that.

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