# Compressing slide data

Captivate provides you with the option of compressing slide data that is shared between slides. This option reduces overall file size and it is the default setting.

Note: In certain circumstances, compressed movies may not appear correctly when imported into Macromedia Flash. In such a case, do not select the advanced compression option. This will, of course, increase the file size.

#### To compress the time between slides:

1. Open a Captivate movie.

2. From the Movie menu, select Preferences.

3. Click the Preferences tab.

4. Select Advanced movie compression.

A check mark appears next to the option.