Graphics Programs Reference
In-Depth Information
irst part is downloaded, the video starts to play and the next part is
downloaded in the background.
•
The progressive method does not have a limitation on the video length
or number of frames, as the embed method does.
•
You can use a diferent frame rate than that of the original Flash ile.
The disadvantage of using this method is that the progressive video
is downloaded to the local machine. Thus, it is less secure than the
streaming methods.
Streaming Video
This method provides a more reliable connection between the local machine
and the server to deliver the video to the user. However, streaming video
requires the server to have Flash Media server running on it.
The greatest beneit of using this method is that it allows many users to
connect to the server to watch a live session, by sending all users the same
video stream in the same time.
Streaming video shares with progressive video some common concepts such
as that the FLV or MPEG-4 video is played externally and sent from the server
in small packets, but there are some diferences. Following are the
advantages and characteristics of streaming video:
•
The streaming video allows many users to see the video at the same time
and the server can send the same packets of information to all the users
at the same time, so it is more usable in video conference and online
sessions.
•
The streaming video starts once the video's irst small segment is
delivered and the rest of the video is delivered to the users in small
segments. Once the controller play head reaches a speciic part of the
video, the server sends this part's segment to the user.
•
This method is more secure, as the streaming media is not downloaded
to the local machine.
•
This method allows more information to be retrieved about the user,
such as the bandwidth capacity of the user's network.
Understanding the diferent video delivery methods in Flash is important so
that you can make the right choice. Following is an example of how to
import video content in Flash using the Import Video dialog box.
Flash allows you to import many diferent formats and convert them to FLV or
F4V formats, which are saved next to the SWF ile that calls it when the user
plays the video. In the following exercise, you will see how to import a video in
QuickTime and how the Video Import wizard converts the video to FLV.
1. Open a new Flash Document.
2. From the Properties panel, set the ile dimensions to 800px
×
600px.
3. Choose File
>
Import
>
Import Video.
