I've uprezed our dvcpro HD material, color corrected it and droped a safe color limiter (422 mode checked) on the top most video track w/safe color settings set at 18 - 232. In Theory this should prevent anything from going out of gamut right? But I keep getting hits sometimes low sometimes high. I'm forced to manually legalize about every 8th shot. On a two hour show this is killing me.

This same thing happens with HDCAM material but for some reason not with HDV. Can somone shed some light on this. I thought perhaps it was because just one of the fields is out of gamut and for some reason the limiter won't see it. 

 Hi.  I use all the time the "clip low / clip high" buttonts and never had problems.

Its in the Avid CC tool - HSL Tab - Controls - low clip - 17 - high clip - 234.

I do TV shows all the time and never had a reject of low or high picks.

Good luck.

 I get the same results with CC. Some footage just wont be clipped. But why?

 Did you use the clip high clip low buttons?

 I use a the Master Curve, and clip the levels on that. Never had a problem.

Produce broadcast material this way without a rejection.

Red Ochre:

I keep getting hits sometimes low sometimes high.

What are you using to monitor the signal? Internal warnings? Externtal box (which one)?

- Rob

 Hi Rob,

I'm using a hamlet monitoring hd-sdi out.

Hi Rob. Are you out there? Somewhere?

 Is anybody here using a real waveform monitor/vectorscope? Those are the two primary tools the QC houses use to accept or reject your product.

Which model of Hamlet scope are you using?

When you get hits on HDCAM material, what type of warnings are they? Composite? RGB Gamut? Luminance?

- Rob

robg:

Which model of Hamlet scope are you using?

When you get hits on HDCAM material, what type of warnings are they? Composite? RGB Gamut? Luminance?

 

- Rob

 Hamlet LCD Scope 292WVA

The hits are RGB Gamut

 We use Tektronix 601 scopes and Rasterisers. Nothing else is up to the job IMHO.

AdamGiles:

 We use Tektronix 601 scopes and Rasterisers. Nothing else is up to the job IMHO.

100% agreed.

So are you guys saying that its probably the scope thats causing the problem?

 Not necessarily. I'm saying that the virtual software driven waveform tools are not up to task of critical measuring of fine details of the various signal parameters, right down to the nanosecond. The Tektronix products when properly calibrated, will tell you the rock solid truth about your signal.