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Confusion about avi,dv,best better settings
Since I started editing video I have always been under the impression that I could open a DV file as an avi & when its an avi you can process it as much as you wish before saving it again as an avi or DV & that you wouldn’t loose any quality at all, expect where you had added transitions, added titles etc?
I have since seen some things that suggest that there may always be quality loss even if the loss is so small as to be almost undetectable.
Confusing things even more is that if you were to render out a project you are offered the opportunity to create your new avi using either good or best settings. This again suggests that what you choose affects quality.
Please clarify the situation as to the loss if any using avi,dv & if you should use best settings for avi’s?
Thanks in advance
Thanks in advance
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1 Reply
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Not quite.
DV is a lossy format. There are various DV codecs, however.
Sony’s is amongst the very best, and can withstand a lot of recompression before degradation is visible.
AVI is a wrapper. It can contain a DV codec or other codecs.All that said…if you edit cuts-only, a rerender of the DV content is not affected. It is a bit for bit render with no recompression. However, the moment you touch a pixel in a frame ie; color correction, pan/crop, track motion, title overlay, etc, the frame must be recompressed.
The good/best settings do affect the file; they affect how the renderer looks at the file content. Using “Best” for DV that hasn’t been spatially changed doesn’t really offer any quality difference, but does offer longer render times.
Douglas Spotted Eagle
VASST
Aerial Camera/Instructor
Certified Sony Vegas Trainer
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