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Quality difference between DVCpro25 & 8bit uncompressed
Hi folks
We currently edit from a variety of media capturing at 8 bit uncompressed from component outputs via an AJA IO box – this has a bit rate of 20MB/sec. This is output the same way to DVCpro 25 tape and sent to our transmission facility. Here they load the tape onto a server at 3.5MB/sec for broadcast.We are installing a digital library system and the IT department think we should be able to edit using footage caputured with the DVCpro codec at 3.5MB/sec.
This seems like a vast drop in quality, but its all digital they say!
Does anyone have any helpful coments?
Many thanks
David Scott -
2 Replies
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If most of the source is DV, you’re best off capturing it as such. You’ll not gain any quality up-converting the DV to 8 bit… It could be argued that graphics would look better, but then, I’m not seeing a huge difference, however there probably is some on a scope… theory states that when you take a digital recording, then convert an analog out then recapturing it as a digital file, you lose quality… that’s what you are doing when you convert DV to analog then back to digital…
Jerry
Apple Certified Trainer
Author: “Jerry Hofmann on Final Cut Pro 4” Click here
Dual 2 gig G5, AJA Kona SD, AJA Kona 2, Huge Systems Array UL3D
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Thanks Jerry.
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