Re: Saving Movie Maker Projects
From: Rehan (rehan_at_[nospam)
Date: 06/24/04
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Date: Thu, 24 Jun 2004 03:15:29 +0100
"PapaJohn" <PapaJohn@CharterMi.net> wrote:
[...]
> I don't disagree about the compression of a digital video file when it's
> first put onto a digital camcorder tape. But my understanding is that a
> DV-AVI file on the computer is the same as that on the tape. From a
> practical way of talking about it, especially when comparing it to
> something
> such as a Divx compressed file, I tend to call it uncompressed.
>
PapaJohn,
I would disagree with you. It is misleading to call DV AVI an uncompressed
format since the format not only uses compression, but is lossy too. So if
you encode your video using dv avi several times, each time using output of
last encode, you will get a degraded quality in increasing order.
It is also not the best quality output format from WMM, in all cases. For
still pictures slideshows, a higher quality WMV, produces better results
since it can maintain 1:n pixel mapping (where n is an integer >=1). However
for video captured from dv sources it is the best quality format available
for output from a standard WMM setting. However, with custom profiles, one
can surpass even that using WMV as one can use Uncompressed video + audio
encoding in an wmv profile.
In short I would recommend making this distinction clear on your website and
use term like "practically best quality format" rather than "uncompressed
format" which is not justifiable as explained above.
Rehan
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