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WaveForm Monitor Questions
I don’t need to know a history of Waveform Monitor just these answers.
1. Is 0 in the waveform monitor true Black when working with Digital?
2. Do I have to have the brightest part of the picture reaching 100 in the waveform monitor or is it okay to occasionally have it reading 90 or 80?
3. There is a little checkbox above the Waverform monitor that says “7.5. IRE” Do I have it checked or unchecked?
I’m mostly distributing my video to the Web but will occasionally submit some videos to Public TV.
Thanks,
Bryce
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8 Replies
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1. Yes
2. It doesn’t need to be at 100
3. https://helpx.adobe.com/premiere-pro/using/using-waveform-monitors-vectorscope.html -
The reason I was asking was because someone told me that with Digital black is -3 not 0. The color bar generator in Premiere Pro shows that Black is -3 when 7.5 IRE is unchecked.
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What you are seeing is the Pluge in SEMPTE color bars, the three narrow vertical black bars in the lower right corner. The Pluge is used for monitor calibration. Notice that the left one is -3, the center is 0, and the right is +3. The space to the right of those is 7.5 for other calculations. Digital black is 0. The other black chips in the color bars should be reading 0 on your scope.
Joe
Living the SuiteLife!
Stuff for editors http://www.cafepress.com/suitelifehttp://www.facebook.com/pages/SuiteLife/1524456414462851?ref=hl
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All the PLUGE colors are reading -3 though. Not one is showing 0
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Here is where they show up on the scope in Premiere, color bars generated by Premiere. I also use an external scope which shows the same reading.
Joe
Living the SuiteLife!
Stuff for editors http://www.cafepress.com/suitelifehttp://www.facebook.com/pages/SuiteLife/1524456414462851?ref=hl
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AHHH Now I see what you mean. I for some reason didn’t notice that earlier. So Black in Digital is 0 and not -3?
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Correct.
In your video clips you want the pure blacks in the image just barely touching the 0 line and the pure whites just barely touching 100. Everything else falls in between.
If you have trouble with a clip, apply the Broadcast Colors filter in Premiere and it will clamp down the whites to legal levels.
Joe
Living the SuiteLife!
Stuff for editors http://www.cafepress.com/suitelifehttp://www.facebook.com/pages/SuiteLife/1524456414462851?ref=hl
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Hi all,
Greetings from the Great Land Down Under…
I am a bit hesitant to use the Premiere Pro CC (PPCC) scopes.
First, I’m working in PAL. I have a graphic of 100% (EBU) bars. When I bring it into my… OK, I’m going to use the “A”-word, my Avid, the Waveform monitor in the Colour Correction tools shows black at 0% (0mV)and white at 100% (700mV) which is just what I would expect. When I look at the same bars in PPCC, the white bar is reading below 100% and the black bar above 0%. Now I get it because in PPCC, white is 255 and black is 0 which is all well and good for full-range RGB world but not helpful when having to deal with broadcast limits. Is there a way to have the PPCC waveform scale display 0mV – 700mV?
Ideally I’d like to have a warning system in PPCC which displayed when my luminance, composite and RGB gamut limits were being violated rather than having to use a rather inelegant “limiter” on an adjustment layer.
Cheers,
Dave Forsyth
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