Thanks for the explanation. Now can I just saw WTF? Is it the SDI audio that is suspect here? Is it the cameras that are putting sdi audio out of sync or the PIX processing. This just reinforces Wilson's concerns with these recorders in the field. Hell even though the old BVU-110 was heavy on the shoulder you didn't have to deal with this kinda doo doo. To piggy back on Wilson, "And this is progress?"
--- In Avid-L2@yahoogroups.com, Jim Feeley <jfeeley@...> wrote:
>
> A Sound Devices tech note:
> Sync Offset When Using PIX Audio Inputs with Camera Video
> http://www.sounddevices.com/notes/pix/sync-offset/
>
> Fairly simple in-the-field (well, prep-day/hour) method that a SD support guy suggests:
>
> ----
> Here's a quick and accurate way to calibrate input audio delay to match your video camera's SDI out processing delay . . .
> - Feed mic signal to both camera and PIX audio inputs
> - Set PIX Audio Input to "Analog 2ch + SDI"
> - Set PIX [headphone] monitor to monitor all audio inputs in mono ('12345678' setting)
> - Adjust PIX audio input delay until you no longer hear any delay or phasing between the SDI and analog input.
> ----
>
> More PIX tech notes, several relevant to Avid post:
> http://www.sounddevices.com/notes/category/pix/
>
>
> Jim Feeley
> jfeeley@...
>
>
>
> On Jul 24, 2012, at 11:03 AM, johnrobmoore wrote:
>
> > Could you elaborate on adjusting sync offset. In the words of Dave Bargin, "What is the spirit of this function?"
> >
> > --- In Avid-L2@yahoogroups.com, Jim Feeley <jfeeley@> wrote:
> > >
> > > On Jul 24, 2012, at 8:06 AM, Benjamin Hershleder wrote:
> > >
> > > > Thanks to everyone that replied in this thread. It was helpful.
> > > > For anyone that's following along, here's what happened (#5 may be of the most interest):
> > > >
> > > > 1 -
> > > > DP recorded XDCAM files to the onboard SxS card (35Mb/sec). He also used an external device (sorry that I forget which one... it had "pix" in the name I believe).
> > >
> > > So a Sound Devices PIX recorder, either the 220 or the 240 (the 260 isn't shipping yet). Info, manuals, tech notes here:
> > > http://www.sounddevices.com/products/video_recorders/
> > >
> > >
> > >
> > > > 5 -
> > > > Interestingly... strangely... disconcertingly (to me, anyway), when I compared the durations and the TC of the XDCAM files with the .mov files, both were very different. I found this odd.
> > >
> > > Hmm. I haven't bumped into such problems. The recorder isn't perfect, but it's pretty useful and reliable, ime. I've found it fairly simple to set up triggering, adjust sync offset, and all that. But that did require spending some time with the manual, working with the things a bit, and all that. Perhaps the device was tossed into production's hands without enough time for them to suss it out.
> > >
> > >
> > > > 8 -
> > > > I am now happily editing away.
> > >
> > > And really, what else matters?
> > >
> > >
> > > Glad you got it worked out.
> > >
> > > Jim
> > >
> >
> >
>
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