Dual Link Capture - shifts
by Joseph Barnett
on
Oct 29, 2009 at 4:27:38 pm
Hello all,
Im trying to see how far I can push our FCP suite. We are a 3D animation / effects facility that works in RGB. We communicate in house with DPX frames and deliver to a variety of file /tape formats. Currently I use our scratch or smoke to do this, our FCP is primarily an Offline suite. I have been trying to see how far I can push the FCP to work in RGB and capture in 444.
What we have:
- FCP 7 (studio 3)
- Aja Kona 3 (with the latest 7 drivers)
- HDCam SR Deck
- Glue tools DPX (although the latest upgrade isn't working well with this - you can see the problems listed / answered here:http://www.gluetools.com/FUDforum2/index.php?t=msg&goto=865&S=7ac81f2c3362eca7b7dc428d6acae15b#msg_865
What my testing has revealed (Using a 10step generated by the HDSR machine):
Single link Capture utilizing the HDSR frame converter to 422: CORRECT for YUV QTS- 10bit/ 8bit/ ProRes
Dual link Capture/ VTR Exchange/ DPX Frames: INCORRECT
Dual link Capture/ VTR Exchange/ AJA RGB 10bit QT:INCORRECT
Dual link Capture/ FCP/ AJA RGB 10bit QT:INCORRECT
I tried setting to full and smpte and it seemed to make no difference the outputs looked exactly the same. When i examined the DPX frames in the Scratch they are SMPTE. Does anyone else work successfully with duallink? ive read a lot of different debates on the forum but so far I am unable to make it work correctly for us. One more point that is confusing me if FCP can only render in 8bit RGB then are my efforts futile? essentially what i'm hoping to achieve is to have FCP as a third option to capture or export to our HDCam SR machine without any shifts/ losses using dpx frames
Any help or nudges in the right direction gratefully received.
Re: Dual Link Capture - shifts by John Fishback on Oct 29, 2009 at 9:11:10 pm
If you have no luck here, you might try posting on the Kona or HD High-End forums. Also, search those forums. I recall some discussions about this or something similar in the past.
John
MacPro 8-core 2.8GHz 8 GB RAM OS 10.5.5 QT7.5.5 Kona 3 Dual Cinema 23 ATI Radeon HD 3870, 24" TV-Logic Monitor, ATTO ExpressSAS R380 RAID Adapter, PDE enclosure with 8-drive 6TB RAID 5
FCS 2 (FCP 6.0.5, Comp 3.0.5, DVDSP 4.2.1, Color 1.0.3)
Pro Tools HD w SYNC IO, Yamaha DM1000, Millennia Media HV-3C, Neumann U87, Schoeps Mk41 mics, Genelec Monitors, PrimaLT ISDN
Re: Dual Link Capture - shifts by gary adcock on Oct 30, 2009 at 1:36:32 pm
[Joseph Barnett]"
What my testing has revealed (Using a 10step generated by the HDSR machine):
Single link Capture utilizing the HDSR frame converter to 422: CORRECT for YUV QTS- 10bit/ 8bit/ ProRes
Dual link Capture/ VTR Exchange/ DPX Frames: INCORRECT
Dual link Capture/ VTR Exchange/ AJA RGB 10bit QT:INCORRECT
Dual link Capture/ FCP/ AJA RGB 10bit QT:INCORRECT "
OK
yes these questions are usually answered in the Kona Forum. but lets back up here.
I work almost exclusively in this space with these tools in the formats you mention without issue, So I am more than a little confounded, and do not really understand what you did.
What is not correct about the captures? My guess is that you did not set the deck up correctly if all you got was a single link capture.
Are you sure the deck was outputting over Dual Link as RGB?
Which SR deck?
Why are you not using a master source tape instead of relying on the B+T in the deck?
What computer OS and what storage are you capturing too?
a full methodology would be nice.
gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows for the Digitally Inclined
Chicago, IL
