Apple QuickTime Informações Técnicas descarregar pdf (Página 24)

24 Chapter 2 Setting Up Your QuickTime Streaming Server

You need the following equipment to stream live audio or video:

• Source equipment for audio, video, or both, such as a VCR, video camera, and

microphone.

• A computer with QuickTime Broadcaster or other broadcast software (G4 computer

recommended for MPEG-4 broadcasting) and a video or audio capture card.

Note: QuickTime Broadcaster supports video capture from most FireWire-equipped

sources, including digital video (DV) cameras, some webcams, and DV converter

boxes for a fast and easy broadcasting process with professional-quality results.

• 128 MB of RAM (256 MB recommended for professional broadcasting).

• QuickTime 6 or later.

Bandwidth Considerations

It’s generally not a good idea to connect a streaming server to the Internet or local area

network by Digital Subscriber Line (DSL) or cable modem. The server will be severely

limited by the relatively small bandwidth of DSL and cable modems for uploading data.

In some cases, running a server on a DSL connection may break a DSL service

agreement. Consult your DSL or cable modem service provider before setting up the

server.

When authoring Real-Time Transport Protocol (RTSP) streams, you’ll get best

performance if the streams don’t exceed 75 percent of anticipated client bandwidth.

For example, don’t use a rate higher than 21 kilobits per second (Kbps) for a 28 Kbps

modem connection. For a typical 56K modem connection, don’t use a rate higher than

40 Kbps. For a T1 (1500 Kbps) client connection, don’t use a rate higher than 1125 Kbps.

Setting Up Your Streaming Server

You can set up your streaming server, test your setup, and access media streamed from

your server.

To set up your streaming server:

1 Open Server Admin.

2 In the Computers & Services list, select the computer you want to set up as a

QuickTime Streaming Server and make sure you can see all of its services (click the

triangle next to the computer if you can’t see the services).

3 In the Computers & Services list, click QuickTime Streaming.

4 Click Start Service.

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Apple QuickTime Informações Técnicas Página 24