[Maya, Question] Including Audio From the Time Editor in your Playblast

I’ve tried something like this:

pmc.playblast(
filename="test.mov",
format="qt", 
compression="H.264",
viewer=False,
clearCache=True,
widthHeight=(1920,1440),
forceOverwrite=True,
showOrnaments=True,
startTime=1,
endTime=20,
framePadding=5,
percent=100
)

However my output does not have any audio. After banging my head against the wall with this, I noticed that if I change the endTime to anything higher than 24, I do get audio in my playblast.

Anyone know what could be going on?