We don’t need to open Blender to render our animation to make rendering progress faster. After you set everything, close your Blender and run Command Prompt (in Windows), then navigate to your Blender program directory:
C:\Program Files\Blender Foundation\Blender>
Then, for example I have my blend file on C: directory, I run this command:
blender -b C:\MyBlenderFile.blend -a
enter and let’s wait until rendering finishes.