Excess Luminance Question???????

IDOG

Well-known member
I am done editing a peice that will be manufactured and sold as a DVD. I have color Corrected the clips and I think they look good. I was not told that this was going to be broadcast nor do I want to prepair it to be either. But I did click the EXCESS LUMINANCE checker in the viewer window and the YELLOW (!) is all over the place because a lot of the footage is blown out. If I don't bring the luminance down, will there be any repercussions? That is if it is not going to be broadcast. Anything I don't know about?
 
If you're goign to be outputting to video equipment or selling DVD's of the material it's best to keep it within a standard range. Excess luminance can cause problems on TVs. My TV buzzes if it's too high.
Just add the broadcast video filter to your clips. This will clamp colors and brightness.
 
I have put the broadcast filter on things before that have this much Luminance and it has made parts of the screen Neon Green? The whole thing is it is an hour program and I don't have time to go through every clip. Is there a way to get rid of the Neon Green without manually adjusting the Highlights? And going Frame by frame to check for them?
 
When you say turn it neon green are you meaning that it shows green lines with the range check on?? If so just turn off the range check and they are gone.

Once you turn the excess lumina range check on, go through each clip one by one. When you see an exclamation point on the screen it means there is excess lumina.

Open up the Broadcast safe filter. change it to normal(try this).

Put the filter on this clip. The exclamation point should now turn to a check mark. The clip is now broadcast safe.

Repeat this process over the entire movie clip by clip.
 
OK, Look. You guys are not getting me. I have put the broadcast filter on things before.
First thing is this, I put the Excess Lumina range check on. If it has a (!), I bring down the brightness. Then a Green check mark comes up. Then when I render it out. The (! ) comes back but on some clips it and some clips it does not come back but instead, on the TV screen is Green Pixles here and there. Not on The Computer Monitor. Its as if the Braodcast filter puts neon pixles on the screen.
What should the broadcast safe be set to Normal(120) or Conservitive(115)?
 
Settle down, please.

Normal(120) or Conversative(115) is irrelevant. You are in the color correction layout, right? You should see the scopes. You want the clipped whites to be 100 IRE or lower.

The 100, 105, 110, 115, 120, and 133 lables in the Broadcast Safe plug-in don't really do what you're thinking. Ignore them. Choose the one that looks best in context (probably 133).

Sfa the "green pixels" I know exactly what you mean. This has nothing to do with the Broadcast Safe filter, per sey. Two days ago I saw this for the very first time in three years in FCP on a clip I exported uncompressed for After Effects. I think it was an exporting glitch (?) I don't think it had anything to do with the Broadcast Safe plug-in because I've never once noticed it on anything else. Hope this helps.
 
Stabb_Films said:
Repeat this process over the entire movie clip by clip.

BTW, if you want to apply the same filter to every clip, just select the whole timeline (apple + A) then just drag the filter from the bin and drop it on the selected timeline.

Of course you have to be careful that you want exactly the same filter on every clip.
 
mmm said:
BTW, if you want to apply the same filter to every clip, just select the whole timeline (apple + A) then just drag the filter from the bin and drop it on the selected timeline.

Of course you have to be careful that you want exactly the same filter on every clip.
I was going on the idea that only selected shots needed to be corrected, so he just scrolls through each clip looking for an exclamation point to appear. That way he's only getting the bad ones and cuts down on rendering.

But, if you apply broadcast safe to a clip that doesn't need it, will it effect it in any way other than make it need to be rendered?
 
Stabb_Films said:
But, if you apply broadcast safe to a clip that doesn't need it, will it effect it in any way other than make it need to be rendered?

hmmm.... not sure... never tried. I colour grade pretty much everything, well everything that I would bother to make broadcast safe anyway.

I should think that if it renders the shot, you will just loose a little quality. It may not be much quality though as an intelligent codec can use the exsisting artifacts in the recompression.
 
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