[Avid-L2] Re: NitrisDX sync from incoming HDSDI

Depending on your frame rate you can use standard black burst if you're in the 29.97/59.94 world. Yes you can usually get away without it. When locking to incoming video you will see a lot more breakup on the out point of an insert edit. That is not to say the tape is breaking up just the signal when it comes out of edit. When the edit out point is played back it will be stable. Another phenomenon is that if the Avid stalls while outputing to an SR 5500/5800 and it is locked to incoming video you will punch a hole in the master that looks like a broken control track. The only solution is to assemble edit from that point on. It has been my experience that when the deck is locked to an external reference you are much less likely to have this occur even when using space bar to stop an edit. My theory is that because the Avid output signal breaks up on a stall etc... the deck is trying to reference to a moving target and this creates an erratic slewing of the scanner trying to lock to an unstable signal and irreconcilable errors occur and require an assemble edit. With the deck locked to external the scanner servo remains locked to a stable source of reference even when the avid goes wacky. You'd really be foolish to not spring for a AJA Gen-10 for peace of mind and stability.

--- In Avid-L2@yahoogroups.com, "watkinssan" <watkinssan@...> wrote:
>
> Anyone out there not sending trilevel to their Avids and instead locking to the incoming HDSDI stream during capture? (NitrisDX set to Reference). Then, for output, having the deck sync off the HDSDI from the NitrisDX? (NitrisDX set to Internal).
>
> We did tests and this worked, but I want to make sure I am not missing anything before we go ahead with this work-flow. Thanks, Jason
>

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