06-02-2006, 10:46 PM
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Member
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Join Date: May 2006
Posts: 62
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Quote:
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Originally Posted by Worley
A DVD uses MPEG2 video. The JVC HDD camcorders - and I suspect the other brands, too - also use MEPG2 video.
MPEG2 is a delivery format, so it was not designed for editing purposes. Therefore, as soon as you load it into a NLE and do anything to it, you're going to lose some quality.
Worley
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Sorry... this isn't really true.
MPEG2 is not a delivery format... it's just simply a different format. It is certainly not the best chioce for editing because of its GOP stucture... but its becoming more acceptable to use for editing.... especially when you consider that HDV is a native MPEG2 format.... If you plan on getting into HD, then you had better get used to the idea of MPEG2 editing.
The difference with HDD, DVD cams and DV cams is that the MPEG is at a much higher compression level than that of a DV cam. Of course you will receive less quality because of the higher compression.
But unlike DV which is stuck and unadjustable at about 25M, Mpeg2 can vary it's compression levels from about 2.5M all the way down to 50M and beyond. Many respected pro's firmly believe in shooting with DV or DVpro and editing in a low compression, i-frame-only, mpeg2 ( of course you need high-end equipment for this).
It is true that MPEG2 is lossy... but then contrary to popular belief.... so is DV. However, I have spent many years editing MPEG2 and I have come to learn that the high compression rates used for dvd storage is much more of an enemy than the lossy behavior of MPEG2 ever was.
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