Once you upgrade to QuickTime Pro, select one of these buttons to flip or rotate your movie using QuickTime Player.

I recorded a bunch of movies on my digital camera by holding it vertically instead of horizontally, but now they only play sideways on my Mac, and I can’t figure out how to rotate them.

If you upgrade from QuickTime (free, included with Mac OS X) to QuickTime Pro ($29.99, www.apple.com), you gain several extra features, such as basic video editing, conversion of your movies to a variety of formats, and built-in audio and video recording. You can also change the size and orientation of movies that you’ve recorded.

To change the orientation of your movies, open up a movie in QuickTime Player and choose Window > Show Movie Properties. Select the track entitled Video Track and click the Visual Settings tab below. Click one of the rotate buttons to rotate your movie.

Alternatively, check out TransformMovie (variable pricing, www
.limit-point.com/Utilities/TransformMovie.html), which is specifically designed for rotating and resizing QuickTime movies.