Apple QuickTime Technical Information download pdf (Page 65)

Chapter 6 Setup Example 65

A Tripod Is a Must

It’s important to use a camera tripod when shooting a live presentation, and also to

avoid pans, tilts, and zooms. If the camera moves just one degree, every pixel in the

frame changes, multiplying the difficulty of encoding the stream adequately. What was

a simple scene to encode suddenly becomes much more difficult.

The tripod should be lightweight while still providing stable support for the camera’s

weight.

Get a Simple Lighting Kit

Lighting is a big subject and beyond the scope of this guide, but here are some brief

suggestions.

Even a high-quality video camera will produce poor results without proper lighting. It’s

unlikely that the normal lighting available in a typical classroom will be adequate for

shooting a live presentation. At a minimum, you’ll probably want to add backlighting

to make your subject stand out from the background. A portable lighting kit

supporting three-point lighting, plus a reflector or two if you’re planning to shoot

outside, can greatly improve your results.

Step 5: Set Up Broadcaster

In this example, QuickTime Broadcaster is installed on a laptop computer. This

encoding software is included on the Mac OS X Server CD and can also be downloaded

free of charge from the QuickTime Broadcaster website at www.apple.com/quicktime/

products/broadcaster/.

To install QuickTime Broadcaster, double-click the installer package

(QuickTimeBroadcaster.pkg) and follow the on-screen instructions.

Once the encoder software is installed, plug the camera into the laptop using FireWire,

turn the camera on, and see if QuickTime Broadcaster recognizes it.

1 Open QuickTime Broadcaster and click Show Details.

2 Click Video and choose a video source from the Source pop-up menu.

If the camera is recognized, it appears in the Source menu. Video settings should also

be active (not dimmed).

If the camera doesn’t appear in the Source menu, quit QuickTime Broadcaster, make

sure your camera is connected and turned on, and then open QuickTime Broadcaster

again. If your camera still does not appear, check the QuickTime website or the

AppleCare Service & Support website for information on compatibility and other issues.

When broadcasting to QTSS on a separate computer, as in this example, Automatic

Unicast (Announce) is the recommended transmission method. It’s easy to set up.

1 In QuickTime Broadcaster, click Show Details, click Network, and choose Automatic

Unicast (Announce) from the Transmission pop-up menu.

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Apple QuickTime Technical Information Page 65