How to configure the default quality of MovieImporter before importing the video files?

I need to configure the default quality setting of MovieImporter before importing movie assets to my project because I have hundreds of video files to be imported and adjusting the quality in the Inspector would take too much time.

I have checked the solution for configuring TextureImporter by scripting a subclass of AssetPostprocessor as an Editor script and that works for the 2D texture, but I didn't figure out the similar solution for the MovieImporter.

Any ideas? Thanks.