3 votes
Accepted

ffmpeg lutrgb to create zebras

Assuming your input is full range RGB when fed to the filter, then something like geq=r='if(between(st(1,r(X,Y)+g(X,Y)+b(X,Y)),15,750),p(X,Y),if(lt(ld(1),15),C1R,C2R))': g='if(between(st(1,r(X,Y)+...
Gyan's user avatar
  • 33.2k
2 votes
Accepted

Can a 1D LUT be used in ffmpeg using lutrgb?

The LUT filters don't have cross-referencing of channels. Use geq instead geq=r='if(gt(g(X,Y),145),255,p(X,Y))':g='if(gt(g(X,Y),145),255,p(X,Y))':b='if(gt(g(X,Y),145),255,p(X,Y))'
Gyan's user avatar
  • 33.2k
1 vote

Generate LUT from pre- and post-grade image

One method would be MatchGrade in Nuke (available only in NukeX and Nuke Studio). It can calculate LUT/CDL from two inputs. https://learn.foundry.com/nuke/content/reference_guide/color_nodes/...
antirotor's user avatar
1 vote
Accepted

What does a Cube LUT offer over a PNG HALD?

In addition to what @Geordie said, keep in mind that LUT files can contain floating point values which means that they can describe values that would be between the 8-bit values in a PNG file. ...
user1118321's user avatar
  • 2,156
1 vote

What does a Cube LUT offer over a PNG HALD?

They're essentially the same thing with different storage layouts. A 2D LUT is just slices of a 3D LUT laid out in an image. People use formats like Cube becasue that's what the software supports. ...
Geordie's user avatar
  • 123
1 vote

Exported video doesn't look like the preview within Adobe Premiere

Be sure media encoder has the same LUTs in same order - otherwise it will take a different lut... its a better way to browse to your lut in premiere - Media Encoder will use the same path and ...
Uli Mors's user avatar
1 vote

Correct order of layer effects in Premiere CC 2017?

I agree with McFlySoHigh. If you have multiple adjustment layers placed one above the other, the effects will be applied from Top to Bottom. A bit more on the order of effects application in Premiere ...
Natasha Chist's user avatar
1 vote

Correct order of layer effects in Premiere CC 2017?

I'm fairly certain that Premiere Pro renders all layers from bottom to top. I have found several sources that confirm this behaviour for After Effects, but nowhere is it stated explicitly for Premiere ...
MoritzLost's user avatar
  • 5,412
1 vote

4K Workflow in FCPX - crop down for multicam angles

I'm a little confused. Perhaps it's the terminology you're using. Are you really talking about cropping (throwing away the top, bottom, and sides of the image), or do you mean scaling? Are you ...
Jason Conrad's user avatar
  • 4,504

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