You can inject the frame number into the metadata stream before your retimes 
and then query it afterward. Note that Kronos currently does not properly 
affect Nuke's metadata (in case you're using it).

-Nathan



From: Jordan O 
Sent: Wednesday, November 19, 2014 3:28 PM
To: Nuke Python discussion 
Subject: [Nuke-python] Query source frame through retimes?

I thought I knew how to do this, maybe I've forgotten.
Is there a simple way to query what source frame number is coming from? Say you 
use a time offset and a time warp, how can you know from that node pythonically 
which frame is coming from source?

I suppose exr meta data may be the closest thing I can find.

Cheers,
Jordan



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