Using Leopard’s Mosaic Screen Saver

A very cool screen saver for folks with a lot of photos stored on their Macs.

One of the very cool and almost hidden features of Mac OS X 10.5′s improved screen saver is the photo mosaic screen saver module. This screen saver tells your computer to use all of the photos stored on it to create mosaic images of photos stored in a specific folder or an iPhoto event or album.

If that description doesn’t really help you visualize what this screen saver is doing, this post includes a video that not only shows you how to set it up, but it shows you the screen saver in action.

Keep in mind that the mosaic screen saver works best if you have a lot of photos in your iPhoto file.

Setting It Up

Here are the step-by-step instructions for setting up this screen saver on your Mac. These instructions are repeated in the video, but you might want to read through them quickly to get an idea of what to expect.

  1. Choose Apple > System Preferences.
  2. In the System Preferences window that appears, click the Desktop & Screen Saver Icon.
  3. In the Desktop & Screen Saver preferences pane, click the Screen Saver button.
  4. In the Screen Savers list on the left side of the window, scroll down to the Pictures list and select one of the picture folders, iPhoto events, or iPhoto albums in the list. This will be the folder full of images that are created with the mosaic tiles.
  5. Under the Preview area, click the Mosaic Display Style button.
    Screen Saver
  6. Screen Saver OptionsClick the Options button and use the dialog sheet that appears to set options, including whether slides should be presented in a random order, how many rows of mosaic tiles should make up the image, and the speed at which the mosaic image should be built. Click OK to save your settings.
  7. Set screen saver Start options as desired, using the slider in the main Screen Saver window.
  8. To see what your screen saver will look like on a full screen, click Test. (You can press Esc when you’re finished previewing.
  9. Click the Desktop & Screen Saver preferences window to save your settings.

Seeing It In Action

Okay, here’s my home movie of the setup process, as well as a full-screen test with a number of images. To keep the video small, I downsized my computer display’s resolution. You’ll need QuickTime installed on your computer to see this video.

Two quick notes about this video:

  • To make the file size smaller, I’ve set the screen rate a bit low for this. As a result, the screen saver’s transition appear a bit jerky. When you use the screen saver, you’ll see that the transitions are actually quite smooth.
  • This is a 17 MB file. The quickTime controller may not appear immediately after you click, especially if you have a slow connection to the Internet.

[Note: I removed the full-size video I'd linked to here in addition to showing the movie above. It was choking at least one offline RSS reader with its 72+ MB size.]

Page References

Product ImageMac OS X 10.5 Leopard: Visual QuickStart Guide includes more information about related topics:

  • Screen Saver, pages 166-169
  • Using System Preferences Panes, pages 547-549
  • Preview, pages 304-308

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How to Create a Slide Show for iDVD with iPhoto

The details.

Greetings, visitors! I noticed that this rather old post has been getting a lot of hits lately. Sadly, it’s not up-to-date with the current version of iPhoto. I’m pretty sure it’s based on iPhoto ’06. I’m looking into how I can do this with iLife ’09; when I get new instructions written, I’ll post a link to them here. Until then, just be aware that these instructions probably won’t work for the current version of iPhoto.

Last week, I wrote a brief article about how I was creating slide shows for an iDVD project. After struggling too long with an iMovie bug that manifests itself with the Ken Burns effect applied to high resolution photos, I turned to iPhoto. My article didn’t go into details about it, but I asked readers to let me know if they wanted more information. Lauren commented that she did. So here’s a bit more detail.

The Goal

I wanted to create a DVD that included still images we’d taken during several trips to points of interest in the Southwest. The DVD would be displayed at a trade show, so it needed to look good.

I like the Ken Burns effect that’s part of various Apple software programs. This effect, named for filmmaker Ken Burns, combines movement with zooming to add motion to still images. Mr. Burns uses this technique extensively in his historical documentaries to make old, still images more visually appealing and interesting to viewers. It, in effect, makes motion possible in images created before motion picture technology was available.

At least three Apple software programs utilize this effect: the System Preferences Screen Saver, iPhoto, and iDVD. I’m sure others do, too. If you know what they are, please don’t hesitate to list them in the Comments for this post.

The idea was to build a slide show using the effect, add music and titles, and include the resulting “movie” on my DVD.

iMovie Fails Miserably

I’d been using iMovie to build a slideshow using this effect, but the high-resolution photo bug was preventing me from getting the job done. This bug, which is under discussion on the Apple Support forums, blanks out an image when you attempt to apply the Ken Burns effect to it. This makes it impossible to manually apply the effect. Extremely frustrating.

I hope Apple does something to fix the bug soon.

iPhoto to the Rescue!

The solution I came up with was to create the slideshow movie in iPhoto and bring it into iMovie as a clip for a longer movie. I could also add chapter markers and title pages and all sorts of cool iMovie things to the project before pulling it into iDVD for menu stuff and burning.

Here’s one way to create a slide show movie in iPhoto. (Of course, there are other ways. This is the way I did it.)

  1. Open iPhoto.
  2. Create a new album and give it the name you want to use for your slideshow.
  3. Drag photos that you want to include in the slide show from any other album or the Library into the new album.
  4. Open the album you created.
  5. Drag the photos around to put them in the order in which you want them to appear.

    Rearrange the photos

  6. With the album’s contents displayed and no single image selected, click the Slide Show button at the bottom of the window. A new Slideshow album is created and displayed.

    A New slide show

  7. Click the Settings button to display default settings for all the slides in the slide show.

    Default settings

  8. Choose a desired transition from the Transition pop-up menu.
  9. Toggle the check boxes so only the following ones are turned on:
    • Scale photos to fill screen
    • Automatic Ken Burns Effect
  10. Select the Fit slideshow to music radio button.
  11. Choose a format from the Slideshow Format pop-up menu. Don’t leave it set to Current Display; pick the option that corresponds to the format of your iMovie project.
  12. Click OK.
  13. Back in the slideshow album’s window, click the Music button.
  14. In the dialog sheet that appears, make sure the Play music during slideshow check box is turned on. Then use the dialog to locate and select the song you want to play during the slideshow and click OK.

    Choose music

You’re now ready to preview the slide show. Click the Play button, sit back, and watch the entire show.

Fine-Tuning the Presentation

While you watch the show, you may want to make notes about the order of the slides, the amount of time each slide appears (the longer the music, the move time per slide; the more slides, the shorter the time per slide), and the way the Ken Burns effect works on your images — particularly the vertical orientation (portrait) images. You can fine tune each image if you like by setting slide options. (This is where iMovie failed me, but iPhoto doesn’t seem to have the same bug.)

To change the order in which slides appear, drag them into a different order at the top of the slide show album’s window.

The following changes override the default settings for the slide show for a specific slide.

To set basic options for a specific slide:

  1. Select the slide you want to change.
  2. Choose options from the Effect or Transition pop-up menu.

To set Ken Burns Effect options for a specific slide:

  1. Select the slide you want to change.
  2. Turn on the Ken Burns Effect check box.
  3. If necessary, drag the slider to the Start position.
  4. Drag the zoom slider to the desired start magnification.
  5. In the image window, drag the image to the desired start view.

    Ken Burns Start

  6. Drag the slider to the End position.
  7. Drag the zoom slider to the desired end magnification.
  8. In the image window, drag the image to the desired end view.

    Ken Burns End

The effect will move and zoom the image smoothly from the start to end settings.

Saving the Slide Show as an iDVD-Ready Movie

This is the painfully simple part of the job. Just choose Share > Send to iDVD.

iPhoto will create a slide show movie in QuickTime format and save it to your hard disk in the Movie folder. This may take some time — enough for a coffee or bathroom break.

When iPhoto is finished, it launches iDVD and places the movie in whatever Project was last used. You can use it there if you like or do what I did: delete it from the project, close the project without saving it, and quit iDVD. Then open your iMovie project and drag the icon for the movie into it. You can then add titles and chapter markers and other iMovie things to fancy it up.

Conclusion

What I like most about this technique is the quality of the movie. It’s pretty darn good — certainly good enough for DVD use on a regular television. And I don’t know if I’m imagining things, but it seems to be better than the slide shows I’ve created with iMovie.

Best of all, if you like the show with the default settings, it only takes minutes to create. In fact, your Mac is likely to take more time saving the slide show as a movie than you took to put it together.

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Creating a Slide Show for iDVD

A shortcut with good results.

Over the past few weeks, I’ve been banging away at an iDVD project. The goal is to show still images from my helicopter tours and excursions as slide shows with music. I’m rather picky about these things and decided that I wanted to use the Ken Burns effect with a dissolve transition to add motion to my slide shows. That means I can’t simply use the Slide Show feature in iDVD.

Let me take a moment to discuss the scope of this project. Back in October, I took the Southwest Circle Helicopter Adventure with professional photographer Richard Noll. Richard took just under 1000 still images and several hours of video. I took about 400 still pictures. After deciding that I simply didn’t have time to go through all the video, I settled on the nearly 1400 photos plus about 200 I had already in stock for the area.

The first task was weeding out the junk. Like 30 pictures of ducks and fish swimming together in Lake Powell. And duplicates of shots that differ only in exposure. It took me about 4 hours to narrow down the library to 358 photos.

Then I discovered that there’s some kind of bug in iMovie HD that makes the Ken Burns effect controls choke on images over a certain resolution. Of course, Richard’s camera shot everything at 10 megapixels. That meant cropping or down-sampling his photos for the job. Even then, iMovie was acting unreliably.

I was getting nowhere fast and quickly running out of time.

I burned a DVD with two movies on it. I wasn’t very happy with the results.

There had to be a better way.

Long story short: I stumbled upon the Send to iDVD command in iPhoto. I soon discovered that this command exports an iPhoto slide show (which is infinitely easier to put together than an iMovie slide show) as a high resolution QuickTime move. That movie can be imported into iMovie or iDVD.

So since about 1 PM today, I’ve been knocking out slideshow movies. I’m creating them on my MacBook Pro and sending them over the network to my dual G5 where I’m adding them to an iMovie project. I’ve done seven slideshow movies so far and have three more to go. Looks like I might actually finish today.

More details on request. Use the Comments link.