MACROMEDIA FLASH COMMUNICATION SERVER MX-SERVER-SIDE COMMUNICATION ACTIONSCRIPT DICTIONARY Especificações descarregar pdf (Página 213)

Camera.quality

Availability

• Flash Player 6.

• Flash Communication Server MX (not required).

Usage

activeCamera.quality

Description

Read-only property; an integer specifying the required level of picture quality, as determined by

the amount of compression being applied to each video frame. Acceptable quality values range

from 1 (lowest quality, maximum compression) to 100 (highest quality, no compression). The

default value is 0, which means that picture quality can vary as needed to avoid exceeding

available bandwidth.

See also

Camera.setQuality

Camera.setKeyFrameInterval

Availability

• Flash Player 6.

• Flash Communication Server MX (not required).

Usage

activeCamera.setKeyFrameInterval(keyframeInterval)

Parameters

keyframeInterval A numeric value that specifies which video frames are transmitted in full

(called keyframes) instead of being interpolated by the video compression algorithm. A value of 1

means that every frame is a keyframe, a value of 3 means that every third frame is a keyframe, and

so on. Acceptable values are 1 through 48. The default value is 15.

Returns

Nothing.

Description

Method; specifies which video frames are transmitted in full (called keyframes) instead of being

interpolated by the video compression algorithm. This method is generally applicable only if you

are transmitting video using Flash Communication Server.

The Flash video compression algorithm compresses video by transmitting only what has changed

since the last frame of the video; these portions are considered to be interpolated frames. It may

help to compare this concept with how tweening and keyframes interact within the Flash

authoring environment: the frames between keyframes are created (interpolated) based on the

contents of the previous frame. Similarly, frames of a video can be interpolated according to the

contents of the previous frame. A keyframe, however, is a video frame that is complete; it is not

interpolated from prior frames.

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MACROMEDIA FLASH COMMUNICATION SERVER MX-SERVER-SIDE COMMUNICATION ACTIONSCRIPT DICTIONARY Especificações Página 213