Wednesday, October 12, 2011

RE: [Avid-L2] Re: outputing from XDCam to tape - time of day

 

Great idea. I'm going try it right now. Of course, we'd have to make
an HDCam first- then make a dub of that, in order to add pulldown and
adjust the timecode to 29.97 (or run it through the frame converter in
the SR, but that's a very high price to pay for digibeta downconverts -
I'd rent the 'deck' before then.

gh

-------------------------------------
Greg Huson
Chief
Greg (at) SecretHQ.com
www.SecretHQ.com
DigitalServiceStation.com



-------- Original Message --------
Subject: [Avid-L2] Re: outputing from XDCam to tape - time of day
From: "johnrobmoore" <bigfish@pacbell.net>
Date: Wed, October 12, 2011 5:08 pm
To: Avid-L2@yahoogroups.com

The more I think about this I have another suggestion. What if you
played the HD timeline out to an HDCam deck and set the HDCam deck to
slave to the incoming VITC which in this case would be the anc data time
code of the source coming down the HDSDI output of the avid assuming AMA
linked media would pass this data, I have not tried that. I would expect
the downconvert output of he HD deck to have VITC time code that would
match the source time codes anc data. You could probably just pass
through the HD deck in e/e to get to the digibeta. This would let you
just cut the source clips together and do a straight digital cut in
local mode without having to start and stop.

--- In Avid-L2@yahoogroups.com, "johnrobmoore" <bigfish@...> wrote:
>
> I know Avid will pass normal source VITC time code if it is present
when captured in the SD world. You can set the digibeta to slave to
incoming VITC in those cases and it will match the source time code. I
have not tried this with HD material and I don't think Avid would
regenerate SD VITC time code from the hanc/vanc but I'd love to be
wrong. As has been mentioned you could take the ltc time code out of the
Nitris/Hardware and feed it to the digibeta. You could then manually
record on the Digibeta and playback the timeline using fast forward to
hop to the next clip. If you set the timeline to high quality I wouldn't
think there would be a dropped frame issue but I don't know for sure. If
you had to you could put the digital cut tool in local and leave the
digi in record while marking the next section. I would think this would
give ascending time code that would jump to the next inpoint timecode
when the local digital cut would begin for the next section you mark.
Not exactly automated but might work. I haven't looked for but there
might be external downconverters that would generate time code from the
source anc. data and generate proper SD time code as vitc then you could
just cut all the clips together and do one local digital cut. Sure wish
Avid had the choice of spitting out sequence or source time code on it's
output signal.
>
> --- In Avid-L2@yahoogroups.com, Greg Huson <Greg@> wrote:
> >
> > Interesting problem- with one particular ongoing, normally we get
XDCam HD Discs that are 'record time.'
> >
> > Part of our deliverables is to make digibeta of the XDCam- no
problem, you AMA the clips to Avid, put them on a timeline that matches
the timecode of the source, then lay that timeline to tape- now the
digibeta timecode matches the source (with consideration for pulldown)
so that if the client wants to go back to the HD, we have matching code-
just like making a downconvert from 23.98 to digibeta-
> >
> > But, in this case, the XDCam was shot using time of day, in spite
of our specific instructions to the contrary.
> >
> > without making a giant long timeline the length of the recording
day, then starting and stopping the timeline 30 times (or whatever,) and
'crash' -recording each time they stopped the deck (allowing for
preroll, of course):
> >
> > is there a way to get time-of-day from XDCam to the VTR through
Media Composer? I'd even be willing to make an interim HDCam if that
would help.
> >
> > Any suggestions? We do NOT have the XDCam 'deck,' but rather use
the PDW-U1 to copy the files right off the disc.
> >
> > gh
> > ----------------------------------------------------
> > Greg Huson
> > Secret Headquarters, Inc
> > Post Production / Production
> > Culver City, CA
> > 323 677 2092
> > www.DigitalServiceStation.com
> > greg (at) SecretHQ.com
> > facebook.com/greg.huson
> > www.SecretHQ.com
> >
> >
> >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>




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