iPhoto on Mac OS X does not only work with photo, it could be also used to catalogue videos. However, the iPhoto supported videos are limited to the QuickTime formats .mov, .mp4. While your camera videos are supported by iPhoto, you can catalogue videos with the following method:
1. Right click on the slide bar and choose New Smart Album or choose from menu File > New Smart Album
2. Set the album name as you like, and choose criteria as "Photo is Movie" like the screenshot like below.
3. Click OK button and the movies on the album will be cataloged to the new album.
However, if your camera or camcorder records the video formats not supported by iPhoto, you will need to convert them to .mov or .mp4. For example, Panasonic Lumix still cameras can output hi def videos in AVCHD Lite format. Aunsoft Video Converter for Mac is the recommended 2011 best video converter on Mac. Below is the fast guide for you to convert Lumix DMC-ZS7/Z57 AVCHD Lite 720p videos to MOV for iPhoto.
Step 1. Run Aunsoft Video Converter for Mac as Lumix AVCHD Lite videos to iPhoto converter and click the "Add" button to import AVCHD lite videos.
Step 2. Click the "Format" option and choose HD Video > H.264 HD Video(*.mov) as output format. Click "Settings" button and choose 1208*720 as output size to make it the same as the AVCHD Lite video.
Step 3. Click the convert button under the preview window to start converting Lumix AVCHD Lite 720p MTS videos to MOV on Mac for iPhoto.
After the conversion, you can easily catalogue converted AVCHD Lite Video in iPhoto. If you like, you can also edit the output videos via Final Cut Pro on iMac.