Batch Manipulation?

Hi there.
So I’m using Blender’s video editing feature, and I had a question about the clip settings.
I want to change the video proxy to view the video quicker, but I have a LOT of videos, and I realized that this is a problem I run into a lot, where I want to change the settings for several objects or videos, but I have to go one at a time and change each individual one.
Any help is GREATLY appreciated.