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Peter Groom
Scaling video
on Oct 14, 2013 at 12:33:34 pm

Hi
A FCP video editor colleague of mine talked to me recently about scaling some sd footage in an sd project, and therefore he'd not lose any quality?

Does this hold true in AVID.
Peter

Post Production Dubbing Mixer


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Michael Phillips
Re: Scaling video
on Oct 14, 2013 at 12:47:15 pm

Perhaps a typo? Scaling SD footage in an SD project will have noticeable artifacts at some point depending on percentage of scale. This holds true for any NLE. If you meant to type HD in an SD project where the extra resolution pixels can be used as an extraction, then FrameFlex in v7 is what you're looking for.

Michael


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Peter Groom
Re: Scaling video
on Oct 14, 2013 at 1:47:35 pm

yes hd is exactly what i meant.
thanks
peter

Post Production Dubbing Mixer


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Job ter Burg
Re: Scaling video
on Oct 14, 2013 at 4:38:05 pm

Also, while you will theoretically have more pixels to start from, the QUALITY of the scaler matters. A lot.


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John Pale
Re: Scaling video
on Oct 15, 2013 at 12:30:32 am

As Michael pointed out, this is a feature in v7 called Frame Flex. Older versions cannot accomplish this, as all footage is scaled to the project frame size.


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Pat Horridge
Re: Scaling video
on Oct 15, 2013 at 8:05:18 am

As said it's all down to the scaler.
If you bring SD into an HD project you are short of pixels so scaling up and you are having to make new pixels by interpolation.
However even in an SD project scaling up and you are loosing some pixels and having to create new ones from the ones left.
Either way you are pixel mangling and it's just how good your mangler is.
Frame Flex is useful in taking HD content into an SD project as it allows you to access less than the HD frame size so potentially still shrinking the size rather than previously where HD footage would be scaled to SD and then potentially scaled up.

Pat Horridge
Technical Director, Trainer, Avid Certified Instructor
VET
Production Editing Digital Media Design DVD
T +44 (0)20 7505 4701 | F +44 (0)20 7505 4800 | E pat@vet.co.uk |
http://www.vet.co.uk | Lux Building 2-4 Hoxton Square London N1 6US


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