Quick answer
Use the operating system’s Default Apps or Open With settings. Modern systems, especially Windows and macOS, control associations outside VLC.
Understand the task
Input
One or more media file types, such as .mp4 or .mkv, that should open in VLC.
VLC action
The operating system associates each chosen file type with the VLC application.
Expected result
Double-clicking those files opens VLC. Other file types can keep their existing app.
Tip: Change a few formats first. You can confirm the behavior before assigning every media type.
Steps to make VLC Your Default Media Player
Install VLC from VideoLAN and launch it once.
Open the operating system’s default-app settings.
Assign VLC to the specific media types you want, such as .mp4, .mkv or .mp3.
Test a file from the file manager, then leave specialist formats assigned elsewhere if that suits your workflow.
Limits and recovery
- Setting VLC for one extension does not necessarily change every video or audio type.
- You can reverse the association without uninstalling VLC.
Related decisions
If new files keep joining an existing player after association changes, configure multiple VLC windows and playlist behavior.
After associations work, decide whether VLC should resume each file where you stopped.
Sources and corrections
VLC User Documentation >Menus can differ by VLC version and operating system. If a verified current build behaves differently, report the exact version and platform.