Moxa VPORT 254-M-SC-T Bedienungsanleitung PDF herunterladen (Seite 74)

VPort 254 User’s Manual System Configuration

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NOTE

The image quality, FPS, and bandwidth are influenced significantly by network throughput,

system network bandwidth management, applications the VPort runs (such as VMD), how

complicated the image is, and the performance of your PC or notebook when displaying images.

The administrator should take into consideration all of these variations when designing the video

over IP system, and when specifying the requirements for the video system.

Key Frame Interval

With MPEG4, the key frame plays an important role in deciding the video quality. The key frame

interval indicates how many frames are required for the VPort to get a key frame. A smaller “key

frame interval” means better video quality, but the bandwidth will be increased since the key

frame image size is larger than other frames.

Setting Description Default

Key frame interval

(Only for MPEG4)

Administrators can set up the key frame interval

to determine the video quality.

NOTE

A large “Key frame interval” can reduce the bit rate, but will cause the image to be corrupted

longer if there is packet loss during transmission.

Enable Snapshot

Setting Description Default

Enable or disable the

snapshot image

To get the snapshot image, the VPort needs to

capture one image frame from the total frames,

which may decrease the total FPS of the video

stream. The administrator can decide if this

snapshot function should be used.

disable

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Moxa VPORT 254-M-SC-T Bedienungsanleitung Seite 74