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• Network resources are used more efficiently, because only the parts of the video that are viewed are sent to the
client.
• Delivery of media is more secure, because media is not saved to the client's cache when streamed.
• Streaming video provides better tracking, reporting, and logging ability.
• Streaming lets you deliver live video and audio presentations, or capture video from a web cam or digital video
camera.
• Flash Media Server enables multiway and multiuser streaming for video chat, video messaging, and video confer-
encing applications.
• By using server-side scripting to control video and audio streams, you can create server-side play lists, synchro-
nized streams, and more intelligent delivery options based on the client's connection speed.
To learn more about Flash Media Server, see: www.adobe.com/go/flash_media_server.
To learn more about FVSS, see: www.adobe.com/go/fvss.
Embedding video in a SWF file
Embedded video lets you embed a video file within a SWF file. When you import video in this way, the video is
placed in the Timeline where you can see the individual video frames represented in the Timeline frames. An
embedded video file becomes part of the Flash document.
When you create a SWF file with embedded video, the frame rate of the video clip and the SWF file must be the same.
If you use different frame rates for the SWF file and the embedded video clip, playback is inconsistent. To use variable
frame rates, import the video using either progressive download or Flash Media Server. When you import video files
using either of these methods, the FLV files are self-contained and run at a frame rate separate from that of all other
timeline frame rates included in the Flash SWF file.
You can import video clips into Flash as embedded files in QuickTime video (MOV), Audio Video Interleaved file
(AVI), Motion Picture Experts Group file (MPEG), or other formats, depending on your system.
Embedded video works best for smaller video clips, with a playback time of less than 10 seconds. If you are using
video clips with longer playback times, consider using progressively downloaded video, or streaming video using
Flash Media Server.
The limitations of embedded video include:
• You might encounter problems if the resulting SWF files become excessively large. Flash Player reserves a lot of
memory when downloading and attempting to play large SWF files with embedded video, which can cause Flash
Player to fail.
• Longer video files (over 10 seconds long) often have synchronization issues between the video and audio portions
of a video clip. Over time, the audio track begins playing out of sequence with the video, causing a less than
desirable viewing experience.
• To play a video embedded in a SWF file, the entire video file must be downloaded before the video starts to play.
If you embed an excessively large video file, it might take a long time for the SWF file to download in its entirety
and for playback to start.
See also
"Supported file formats for video" on page 309
FLASH CS3
303
User Guide
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