This app doesn't work on Windows because:

• The threading module doesn't work on Windows
• The subprocess possibly doesn't work on Windows

Restructure the code into a simpler structure that I can actually understand.

Just a pretty quick suggestion checklist:

• Automatically detect if ffmpeg is already installed
• Use the PATH variable instead of copying the ffmpeg executables.
• If not installed yet, #5

This script pretty much has a big future to help lazy programmers like me to trim our coding session vids to only include important parts without copying a StackExchange answer for the hundredth time.

This app can currently only open .mov files. It should be able to open every video file format that FFmpeg can process.

Revamp the graphical user interface. Inspiration:

The output video should copy the input video's options by default. The output video's options should be changeable.

Automatically download FFmpeg to the app's folder so users do not have to.