Nuke: Start, middle and end frame of each TimeClip

nssfoet.py

"""
Select all TimeClips and run code.
Will produce a frame hold with start middle and end of the time clips.
"""
import nuke


frames = []
for node in nuke.selectedNodes():
    node["selected"].setValue(False)
    if node.Class() != "TimeClip":
        continue

    first = node["first"].getValue()
    last = node["last"].getValue()
    duration = (last - first) / 2
    frames.append(int(first))
    frames.append(int(last))
    frames.append(int(duration + first))

frames = sorted(frames)
frame_hold = nuke.createNode("FrameHold")
frame_hold["first_frame"].setAnimated()
for count in range(0, len(frames)):
    frame_hold["first_frame"].setValueAt(frames[count], count)