Proxy files are typically unique or specific to the project with an editor; for example, TechSmith's Camtasia proxy files are stored locally in a hidden system folder. They are not part of the project and can only be utilized properly within Camtasia. Advanced Tip: Some editors may allow you to edit with a placeholder instead of the original media; if your editor supports this method, you can use a third-party utility like Handbrake to manually transcode a lighter, easier-to-work-with file and use that in place of your raw files.