revPreviewVideo | |
Type | command |
Dictionary | LCS |
Library | LiveCode Script |
Syntax |
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Associations | video library |
Summary | Displays the video input in the video grabber without recording it. |
Introduced | 2.0 |
Changes | The use of QuickTime was deprecated in version 8.1 of LiveCode with new defaults for dontUseQT and dontUseQTEffects as true on all systems apart from pre OS X 10.8. The Windows build of LiveCode no longer supports any QuickTime features and setting the dontUseQT and dontUseQTEffects will have no effect. Support for the "Video Grabber" library on Mac OS X ended in LiveCode 9.0. |
OS | windows |
Platforms | desktop |
Example |
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Related | Keyword: file Property: dontUseQT, dontUseQTEffects Command: revVideoFrameImage, revRecordVideo, revVideoGrabIdle, revStopPreviewingVideo Glossary: execute, Standalone Application Settings, command, video grabber, standalone application, QuickTime, LiveCode custom library Library: Video library |
Security | disk, privacy |
Description | Use the revPreviewVideo command to see the image from a video camera on the screen. You must use the revInitializeVideoGrabber command to open the video grabber before you can use the revPreviewVideo command. The revPreviewVideo command shows the input from the video source in the video grabber window, but does not record it. To save the video as a file while displaying it, use the revRecordVideo command instead. If the video grabber was already recording video to a file, the revPreviewVideo command stops the recording. To stop displaying the video input, use the revStopPreviewingVideo command.
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Tags | multimedia |