Apple QuickTime Streaming Server Darwin Streaming Server Manuel d'utilisateur télécharger pdf (Page 15)

Using Playlists to Broadcast Prerecorded Audio or Video

You can create a virtual “radio station” or video broadcast by setting prerecorded QuickTime

media ﬁles to play in a speciﬁed order (a playlist). Setting up a series of playlists and clicking

the Play button for each one broadcasts the media to the Darwin Streaming Server, which

sends the media to viewers in the sequence you set up (random or ordered). Although the

media is prerecorded, it appears to viewers as a live broadcast. All viewers see the same

media being played when they tune in to the broadcast.

To broadcast media, you need to do the following:

Step 1: Prepare QuickTime Media and a Reference Movie File

You can broadcast any media that the Darwin Streaming Server is capable of streaming.

To prepare the media, do the following:

m Use the same number of tracks and the same types of tracks for each movie in the playlist.

Be sure all the media ﬁles contain compatible media types. For example, all audio tracks

should use the same encoding, compression, and bit rate. All video tracks should also use

the same encoding, compression, and bit rate.

m Format the media in each ﬁle in the same way. For example, use the same frame size for

each ﬁle that contains a video track.

m Be sure each item is a hinted QuickTime movie.

To prepare a reference movie:

m Usually you specify the ﬁrst media ﬁle in a playlist as the reference movie. However, you

can author a separate reference movie.

m If you author a separate reference movie, it must be a hinted QuickTime movie that

contains the same number of tracks, type of tracks, encoding, compression, and bit rate

used in the actual media ﬁles.

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Apple QuickTime Streaming Server Darwin Streaming Server Manuel d'utilisateur Page 15