How to edit the YAML?

[pdhixenbaugh]

I'm trying to specify a resolution and a white balance, however whenever I try to do something other than the default { }, the program throws an exception. What is the proper way to modify the .yml so that it uses the individual values for resolution or for white balance?

[shantigilbert]

For resolution:
resolution: { width: 1920, height: 1440 }

for white balance:
white_balance: { red_gain: 1.3, blue_gain: 1.75 }

[geerlingguy]

Alternatively:

resolution:
  width: 1920
  height: 1440

white_balance:
  red_gain: 1.3
  blue_gain: 1.75