Microsoft KB Archive/192866

= The Large Option for Sending Video Images Is Unavailable =

Article ID: 192866

Article Last Modified on 1/23/2007

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APPLIES TO


 * Microsoft NetMeeting 2.1 Standard Edition
 * Microsoft NetMeeting 2.1 Standard Edition

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This article was previously published under Q192866



SYMPTOMS
When you are running NetMeeting and you click Options on the Tools menu and then click the Video tab, the Large option in the Send Image Size area may be unavailable. This can occur even if the video capture adapter is capable of sending large video images.



CAUSE
This behavior can occur when the video capture adapter is not registered with NetMeeting.



MORE INFORMATION
When your computer is configured to use a video capture adapter that is not registered with NetMeeting, NetMeeting queries the video capture adapter for its default capture frame size. The default capture frame size is usually 160 X 120 or 320 X 240. NetMeeting uses this default capture frame size to generate all the NetMeeting frame sizes. These frame sizes are:   Small  - 128 X 96 Medium - 176 X 144 Large - 352 X 288 If the default capture frame size is 160 X 120 (or close to it), NetMeeting enables the Small and Medium options because NetMeeting can create the small size by cropping from 160 X 120 to 128 X 96, and create the medium size by black banding the 160 X 120 images to 176 X 144. The large size is disabled.

If the default capture frame size is 320 X 240 (or close to it), NetMeeting enables all the image size options because NetMeeting can create a 160 X 120 image by down-sampling a 320 X 240 image. NetMeeting then uses the same techniques it uses with the 160 X 120 default frame size to generate the remaining NetMeeting frame sizes. Overall NetMeeting video performance can be slow because of the overhead of capturing video in 320 X 240 mode.

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Keywords: kbhardware kbenv kbprb KB192866

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