| Package | flash.net |
| Class | public class NetStreamPlayTransitions |
| Inheritance | NetStreamPlayTransitions  Object |
| Language Version: | ActionScript 3.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5, Flash Lite 4 |
NetStreamPlayOptions.transition property. These strings control the
behavior that is used to transition to a new stream or to play a stream, depending on the
transition mode that is used.
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| Constant | Defined By | ||
|---|---|---|---|
| APPEND : String = "append" [static]
Adds the stream to a playlist and begins playback with the first stream. | NetStreamPlayTransitions | ||
| APPEND_AND_WAIT : String = "appendAndWait" [static]
Builds a playlist without starting to play it from the first stream. | NetStreamPlayTransitions | ||
| RESET : String = "reset" [static]
Clears any previous play calls and plays the specified stream immediately. | NetStreamPlayTransitions | ||
| RESUME : String = "resume" [static]
Requests data from the new connection starting from the point at which the previous connection ended. | NetStreamPlayTransitions | ||
| STOP : String = "stop" [static]
Stops playing the streams in a playlist. | NetStreamPlayTransitions | ||
| SWAP : String = "swap" [static]
Replaces a content stream with a different content stream and maintains the rest of the playlist. | NetStreamPlayTransitions | ||
| SWITCH : String = "switch" [static]
Switches from playing one stream to another stream, typically with streams of the same content. | NetStreamPlayTransitions | ||
APPEND | Constant |
public static const APPEND:String = "append"| Language Version: | ActionScript 3.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5, Flash Lite 4 |
Adds the stream to a playlist and begins playback with the first stream. This mode does the same thing as the NetStream.play()
method with the reset flag set to false.
In this mode, Flash Media Server queues up the stream specified in NetStreamPlayOptions.streamName
at the end of the playlist and ignores the NetStreamPlayOptions.oldStreamName parameter.
Related API Elements
APPEND_AND_WAIT | Constant |
public static const APPEND_AND_WAIT:String = "appendAndWait"| Language Version: | ActionScript 3.0 |
| Runtime Versions: | Flash Player 10.1, AIR 2, Flash Lite 4 |
Builds a playlist without starting to play it from the first stream.
The APPEND_AND_WAIT transition mode is used with the NetStream.play2() method to build a playlist without
immediately starting to play it from the first stream. Use this mode to load each item in the playlist except the last one.
When you load the last stream in the playlist, set the transition mode to RESUME.
At this point, Flash Player begins to stream and play the playlist.
You can use this mode to build a playlist from scratch, or to rebuild a playlist after a lost connection is recovered.
For a new playlist, when NetStream.play2() is called with RESUME, Flash Player begins streaming
and playing from the first stream, or from the start position specified.
To recover from a lost connection, when you call the NetStream.play2() method with
RESUME, Flash Player determines where the stream was interrupted and instructs the server to start streaming from that location.
The server in turn is able to determine which stream in the playlist corresponds to that location, and starts streaming from that location.
This transition mode is in contrast to the APPEND mode, where playback starts immediately with the first stream.
Related API Elements
RESET | Constant |
public static const RESET:String = "reset"| Language Version: | ActionScript 3.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5, Flash Lite 4 |
Clears any previous play calls and plays the specified stream immediately.
This mode does the same thing as the NetStream.play() method with the reset flag set to true
(the default behavior for NetStream.play()).
In this mode, the currently playing stream is flushed and the stream specified in NetStreamPlayOptions.streamName starts to play.
The NetStreamPlayOptions.oldStreamName parameter is ignored.
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RESUME | Constant |
public static const RESUME:String = "resume"| Language Version: | ActionScript 3.0 |
| Runtime Versions: | Flash Player 10.1, AIR 2, Flash Lite 4 |
Requests data from the new connection starting from the point at which the previous connection ended.
The RESUME mode aligns the stream across the two connections so no artifacts or jumps are observed
in the video playback. Use this mode when you reconnect a stream that was dropped due to server issues
or other connection problems.
Related API Elements
STOP | Constant |
public static const STOP:String = "stop"| Language Version: | ActionScript 3.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5, Flash Lite 4 |
Stops playing the streams in a playlist. This mode does the same thing as calling NetStream.play(false).
It stops and resets the playlist.
Related API Elements
SWAP | Constant |
public static const SWAP:String = "swap"| Language Version: | ActionScript 3.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5, Flash Lite 4 |
Replaces a content stream with a different content stream and maintains the rest of the playlist.
This mode replaces the stream specified in NetStreamPlayOptions.oldStreamName
with the stream specified in NetStreamPlayOptions.streamName. The rest of the playlist is maintained.
In this mode, Flash Media Server does not make assumptions about the content of the streams and treats
them like different content.
If oldStreamName has not yet been sent, the server performs the switch
at the stream boundary and sends the bits for streamName from the beginning.
If the server has already started sending the bits for oldStreamName, it doesn't switch to streamName,
and a NetStream.Play.Failed event is sent.
Use this mode if the streams you want to switch are not related to each other and have different content or lengths. For example, use this mode when you want to swap one commercial for another based on user tracking and past commercial-viewing statistics.
To switch from one stream to another with the same content, use the SWITCH mode instead.
Related API Elements
SWITCH | Constant |
public static const SWITCH:String = "switch"| Language Version: | ActionScript 3.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5, Flash Lite 4 |
Switches from playing one stream to another stream, typically with streams of the same content.
Specify the streams to switch in NetStreamPlayOptions.oldStreamName and NetStreamPlayOptions.streamName.
Use this mode when you want to switch to a stream that has the same content but is encoded at a different bit rate or resolution. For example, use this mode when the application queues up streams in a playlist or is playing a single stream at a particular bit rate, then calculates that the bandwidth availability or the CPU capability is either lower or higher than the stream requirements. The application can then update the streams with their higher or lower bit rate versions.
In this mode, Flash Media Server makes certain assumptions about the relationship between the
oldStreamName and streamName streams.
The server assumes that the streams contain the same content and have the same keyframe interval but have different
resolutions or bit rates.
When a playlist has been queued up and oldStreamName is one of the streams in the playlist or is currently playing,
oldStreamName is replaced by streamName.
If oldStreamName is null or undefined, or if it is not found in the playlist,
the server switches to streamName at the next logical point, to ensure a smooth switch.
To switch from one stream to another with different content, use the SWAP mode instead.
Related API Elements
Mon Nov 28 2011, 06:48 AM -08:00