--- In Avid-L2@yahoogroups.com, Dennis Degan <DennyD1@...> wrote:
>
>
> > On Nov 16, 2009, at 3:09 PM, Greg Huson wrote:
> >
> >> anyone have a recommendation for measuring/adjusting? I'll go with
> >> beep tones and small flashes, unless there's a better suggestion...
> >
> > I offered:
> >
> > I could send you my NBC Sync Test loop as a QT file. I made it
> > myself at work and it's what NBC NY uses (and London too).
>
> On Nov 17, 2009, at 3:01 PM, johnrobmoore wrote:
>
> > Wow I know an International "Syncer". That's definately going on my
> resume. What is on your sync loop? Tone and flashes? Or did you have
> to make it more subdued for London? ;-)
>
> I answer:
>
> The SyncTest was lifted from a 30-second countdown consisting of 16x9
> color bars generated by an Avid Symphony Nitris with a black circle
> that clockwipes into view repeatedly each second. The countdown
> numbers are in the center of the circle. At the 4 second point, a
> "SyncTest" is performed which contains titles for each of the 10 frames
> that precede and follow the sync point located at frame 15. At the
> sync point, the circle is complete and filled with white instead of
> black (even though it is halfway through the 4-second countdown;
> normally at the halfway point of each second, the wipe would be only
> half of the way done) and an audio "pop" is heard on both left and
> right audio channels. This 1-second lift of the 30-second countdown is
> looped 60 times, making it a minute of sync test.
> The countdown was made at 1920x1080 with a frame rate of 29.97. It
> was created with Avid's DNxHD codec, but I converted it to Apple's
> ProRes422 for my use at home in FCP. The original audio is
> 24-bit/48KHz. Because both DNxHD and ProRes422 are proprietary codecs,
> I converted the SyncTest to standard definition DV, as it is a very
> common intraframe codec. I also converted the audio to 16-bit/48KHz
> which is standard for DV. This SD version of the SyncTest is a 217MB
> DV QT file.
> There were several versions of the original countdown made for various
> uses: an anamorphic 16x9 SD version, a 4x3 standard version, and the
> 16x9 HD version. In addition, there are titled and untitled versions
> of the SD countdowns. The titled versions have "NEW YORK BUREAU" at
> the top. The untitled versions have no title at the top and are the
> ones I sent to London. All versions are 29.97fps as that's what all of
> NBC uses and what London feeds to New York. The countdown version I
> used to make the DV SyncTest is the titled HD version as it's the only
> one I have at home right now. For this reason, the DV SyncTest has
> cut-off color bars since the original color bars were 16x9.
> Fortunately, the text and wiped circle are not cut off on the sides
> since they were intentionally placed within the 4x3 area.
> I am currently uploading the DV SD version of Sync Test to "DropSend"
> to make it available. Once the upload is finished, I'll provide a link
> to those who have requested it.
>
> Dennis Degan, Video Editor-Consultant-Knowledge Bank
> NBC Today Show, New York
>
------------------------------------
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