text: Volume Loader: Object Properties
  Reference Cinema 4D Advanced Features Volumes Volume Loader
  If you've imported a Volume sequence, a path (always absolute) will automatically be defined in this field. A new path to an OpenVDB sequence file can be defined at any time. This doesn't have to be the first file in the sequence but can be any file within the sequence.
  Since Volumes saved in external files can change, clicking on this button will update the Volumes in your scene.
  Volume Grids
  This list displays all Volume Grids in the scene. They can be disabled or enabled here.
  Frame [0..2147483647]
  Enable this option if you want to play the Volume sequence in the Viewport. If this option is disabled, only the defined Frame will be loaded.
  From [0..2147483647]
  To [0..2147483647]
  Here you can enter a range for the Volume sequence which will begin at frame 0 in the Cinema 4D Timeline. Otherwise the the first frame number will automatically be used when the sequence is loaded.
  Offset [-2147483648..2147483647]
  Enter the frame in Cinema 4D at which the Volume sequence should start to play.
  Enable or disable looping for the frame ranged defined using the settings above.
  Speed [0.1..+∞%]
  This setting can be used to adjust the animation speed. A value of 0.5 will double the speed and a value of 2 will halve the speed. In this example, the 2nd Volume is omitted or a single Volume will be held for over 2 frames.