So you've got a 3D movie but want to watch it in 2D? No problem! VLC media player makes it easy to convert a 3D movie to 2D with just a few simple steps. Here's how to do it:

1. Open VLC media player and go to 'Tools' in the menu bar.

2. Click on 'Effects and Filters' and go to the 'Video Effects' tab.

3. Check the box next to 'Advanced' and click on 'Anaglyph 3D'.

4. From the 'Mode' dropdown menu, select 'Monochrome'.

5. Click 'Close' to apply the changes.

And that's it! Now your 3D movie will play in 2D, allowing you to enjoy it without the need for 3D glasses. Remember, this feature can only be used for movies that are already 3D, so if you have a regular 2D movie, this won't have any effect. Happy viewing!