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SultanDino
Known Participant
March 23, 2022
Answered

With ExtendScript, how to set the "Input File" or "Look" in Lumetri with a external blob?

  • March 23, 2022
  • 1 reply
  • 4125 views

I am able to set the Look by providing a index number which reprensents the menu option from the dropdown

app.project.activeSequence.videoTracks[0].clips[0].components[2].properties[32].setValue(5, true);

 

Is there a way to load a LUT as blob programatically and set it for the Look? Maybe somehow initiate the "Browse" option and programatically inject the the blob's path?

 

Checking this document about the Lumetri properties, on index 0 there is the Blob property, but I don't know what it is for? Reading the value from that property gives me some weird output like:

 

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I can't find any solution on the web and there is no much help in the documentation of the API.

 

    Correct answer Bruce Bullis

    >Is there any way a "remote" LUT file can be applied programmatically in the Lumetri panel?

     

    No, there is no API that allows for that.

    Justin wrote: 

    >I still couldn't get it to work, which leads me to believe that there are some other processes happening behind the scenes that the scripting API don't have access to.

    Correct!


    1 reply

    G
    GoranLjubuncic
    Participating Frequently
    March 23, 2022

    @Bruce Bullis I would very much like to know as well if this is possible. Is there any way a "remote" LUT file can be applied programmatically in the Lumetri panel? I hope you don't mind me mentioning you, it's just that I was searching for something similar, couldn't find anything and saw that you helped others users with somewhat similar questions.

     

    Thanks!

    Justin Taylor-Hyper Brew
    Community Expert
    Justin Taylor-Hyper BrewCommunity Expert
    Community Expert
    March 23, 2022

    In my testing, saving and setting LUT blob data is very complicated, and requires a fair amount of reverse engineering. There were 2 or 3 blob properties that need to be set, and each had it's own method of encryption. Even after seemingly setting these values correctly, I still couldn't get it to work, which leads me to believe that there are some other processes happening behind the scenes that the scripting API don't have access to.

     

    However, I came across a much more simple way to get and apply LUTs with the path to a LUT file.

     

    You can set the Input LUT by getting the Lumetri video component property, set the 4th prop to the path string, and the 6th prop to 1.

     

    var pathToLut = 'path/to/lut.cube';
var lumetri = projectItem.videoComponents()[0];
var lutPath = lumetri.properties[4];
var input = lumetri.properties[6];
lutPath.setValue(pathToLut);
input.setValue(1);

     

      G
      GoranLjubuncic
      Participating Frequently
      June 1, 2022

      And to add to my last reply:
      If I turn off the Lumetri effect, the effect on sequnce thumbnail on bottom left gets also updated. So the effect is applied, but it is not visible in main player for some reason...



      @Bruce Bullis This is very interesting. Do you have any idea why a LUT wouldn't apply on Windows but it does on Mac? @Justin Taylor-Hyper Brew For you the method which you detailed above works both on Mac and Windows in the latest version of PP?

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