Starting timecode of a placeholder object?

[Byron Nash - INSP]

Is there a way to set the starting timecode when importing a placeholder? You can set it in the Interpret Footage dialog but I can't see how to do it when generating a placeholder via scripting. ChatGPT says I can use the placeholder.footageTimecode attribute, but I think that's not accurate because I can't get it to work or find a reference in the docs for that. 

[Mathias Moehl]

I guess this should be a property ot FootageSource, but since it is not listed in the docs, you probably cannot set this via scripting.

Relying on ChatGPT is not reliable for Ae scripting, I guess. I would always rely on the documentation.

[Byron Nash - INSP]

Yes, I typically have both up when I'm writing scripts now. I find ChatGPT works pretty well to get some basic stuff ironed out but it's quick to suggest a non-existent obscure property like that. I looked at every angle of the FootageSource, MainSource, etc... in the docs to find anything that may work. That's a pain we can't get to that attribute. I made a workaround but it's not ideal. 

[Warren Heaton]

Since Start Timecode is not availabe as an option when we create a Placeholder via File > Import > Placeholder, I'm not sure it would be available via scripting.

After Effects New Placeholder dialog box