View Full Version : Does the component out on the Pro model output before compression?


Laurence Maher
November 29th, 2004, 12:26 AM
Looking for an answer to this please.

How does the component RGB outs work in terms of quality?

Chris Hurd
November 29th, 2004, 06:07 AM
Excellent question, Laurence, but since the Z1U isn't out yet, nobody seems to know for sure! But you can bet we're all looking at this particular question very closely once the camera starts shipping.

Heath McKnight
November 29th, 2004, 08:47 AM
The better question that may help us for now is, does the FX1 do what Laurence asks?

heath

Kaspar Stromme
November 29th, 2004, 09:44 AM
Lots of previous discussion on this (ex: http://www.dvinfo.net/conf/showthread.php?s=&threadid=34467)

Best argument I saw says no delay on component output points to no compression. But don't worry about it, no PRO will ever use that feature ;)

Mike Tiffee
November 29th, 2004, 10:01 AM
<<<-- Originally posted by Kaspar Stromme : . But don't worry about it, no PRO will ever use that feature ;) -->>>

I'm gonna use that feature now just cause you said that!! :-)

Alex Pappas
November 29th, 2004, 05:14 PM
I'm not sure about this, but from my tests, I do believe the FX1 DOES NOT output before compression even with a component in.

What you see is always with compression.

Now if the "pro" model does that or not, thats a good question.

Jim Arthurs
December 1st, 2004, 10:10 AM
<<<-- Originally posted by Alex Pappas : I'm not sure about this, but from my tests, I do believe the FX1 DOES NOT output before compression even with a component in. What you see is always with compression. -->>>

Alex, what kind of tests did you do, specifically?

And you are testing from a "live" feed, and NOT playback from tape, correct? Playback from tape will always be after compression. It's the lack of processing delay from the component outs in a "live" situation that is the source of this uncompressed speculation.

Regards,

Jim Arthurs

Andre De Clercq
December 1st, 2004, 10:34 AM
All camcorders have somewhere in the chain cleaned up (white balanced, gamma corrected..) RGB signal available in a 10 to 16 bit digital version available. If this is being D/A converted you will have the uncompressed RGB components available, and this happen "without"delay. But b.t.w. how has the non delay been verified. Subjectively?

Jim Arthurs
December 1st, 2004, 12:23 PM
Andre,

It's been reported that when viewing "live", there is NO delay in the image coming from the component outputs.

Processing by the MPEG chips would result in a 1/2 second delay, or so the argument goes.

There is that lengthy delay when viewing over firewire.

Regards,

Jim Arthurs

Andre De Clercq
December 1st, 2004, 01:51 PM
Agree Jim.