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Button Tricks in DVD Studio Pro 4, Part 3

Creating rollover effects with custom patches By Dave Nagel
Now that we've created some custom patches for DVD Studio Pro 4, let's put them to use. One of the common requests I get as host of our DVD Studio Pro forum is a technique for making rollover effects on motion menus. What if, for example, you have three buttons on a menu, and in their "normal" state, the buttons are grayscale, while in their "selected" state they're full-color (or sepia or some other tint)? That would be a nice little trick. Here's how it works.

For this trick, we're going to be fudging a rollover effect in which unselected buttons appear to be desaturated, while selected buttons appear with full saturation or a sepia effect or oversaturation. (I'll supply you with the patches to create these effects. See the download link below.) Here's basically what we'll be accomplishing.

Note: This effect does not work with mouseovers. The buttons must be selected using standard navigation (remote control on set-top players, arrow keys on software players).

The patches
For this tutorial, we're going to use two custom patches--patches we actually created in the previous installment in this "button tricks" tutorial series. If you haven't gone through the previous installments in this series, no worries. You can do this without any knowledge of creating custom patches because I'm going to give them to you for use in your own projects. Download them from the following link.

Download: NagelTintPatches.zip (32 KB)

This is a .zip archive. Decompress it, and you'll find the following four folders:

? Nagel01-BlackandWhite.pox
? Nagel02-Sepia.pox
? Nagel03-Cycle.pox (cycles from regular saturation to oversaturation)
? Nagel04-SuperSaturate.pox

Each one of these .pox folders is a custom patch that can be used in DVD Studio Pro to apply tint/saturation effects to the assets in your buttons. They're pretty plain--just a tint effect and nothing more--but they can be used effectively to illustrate this rollover technique.

To install them for use in DVD Studio Pro 4, you must place them at the following location (where all custom patches go):

[Hard Drive]/Library/Application Support/DVD Studio Pro/Patches

In case you missed it last week, here are the effects that these four patches have on buttons.

Creating the rollover effect in DVD Studio Pro
Once these patches are in place, launch DVD Studio Pro. (If you currently have DVD Studio Pro open, you must quit and relaunch it in order to use the new custom patches you've installed.)

I mentioned earlier that in order to create this effect, we have to fudge things a little. That's because the present (standard-def) DVD-video specification is extremely limited in terms of the interactive effects that it allows you to apply to menus and buttons. It's not like Flash, where you can mouse over an element and have it perform any trick your knowledge of Flash allows you to produce. It's much more limited. You can either see a basic, still highlight, or you can use an "auto action" to advance to another menu that contains a different graphic, thus giving your viewers the impression that you've created a rollover effect on a button. That's what I did in the very first example you saw earlier on this page. The button didn't change at all. The menu changed, making it look like the button changed.

So, to begin, let's create a new menu and apply three video elements to it and use those as buttons.

1. Drag your video elements into your menu, one by one, and choose "Create Button and Track: Connect to Track.

2. Now apply one of the patch presets to each of the buttons in your menu. I'll apply "Nagel01-BlackandWhite" to desaturate the buttons. To apply the patch, click on a button, and then go over to the Inspector palette. In the Shape setting, click the pull-down menu and navigate to Nagel01-BlackandWhite. (Remember, your custom patches are not listed in alphabetical order in the pull-down menu. They're listed at the bottom.)

3. Repeat this for all of your buttons so that they're all desaturated.

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Related Keywords:dvd studio pro, rollover, button, button tricks, nagel, dvd authoring, mac


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