These are all quoted from the Revolution dictionary that's included with Revolution. If you want to have a look at my video grabber test stack, download the stack from or just get it in Revolution by entering in your message box:Ī Compilation of All Video Grabber Entries from the Revolution Scripting Dictionary You can probably get it to work better by experimenting and tweaking. The last thing you have to do is close the video grabber using the revCloseVideoGrabber command.
#Maplin video grabber mac os
Set the filetype to "TVODMooV" -make sure Mac OS knows what it is
#Maplin video grabber how to
Here's how to start recording video to a file:.Now, whenever you preview or capture video to a file you have to make sure you call the above handler.Ĭancel gMsgId - so you don't keep trying to call revVideoGrabIdle.Send "videoRefresh" to me in 10 milliseconds Here's the handler I came up with that worked (be sure to put it in the message path of the buttons you use to start video capture.) A big key to making it all work right is to set the revVideoGrabIdle command at regular intervals so that you give QuickTime enough clock cycles to do its thing.Set the videoSettings of this cd to vSettings Local vSettings -docs say the variable has to exist before referring to it Choose, save and set the video grabber settings.Optionally set the rectangle the capture window will use with the revSetVideoGrabberRect command.Initialize video capture using the revInitializeVideoGrabber command.In order for the Video Grabber to work you must be careful to do the following, in order: It didn't work completely right for me, so I combed through its handlers and was able to grok it enough to put together a working sample of my own. I first tried out the Video Capture.rev stack that comes in the Sample Projects folder with your copy of Revolution. This is the system configuration I was using when I created this tutorial (June 2008): I assume that Windows with QT installed will work the same, but I don't have the time or equipment to test it. Since I work on Mac OS X, and therefore use QuickTime, I will describe what I did to make video capture work using QuickTime.
#Maplin video grabber for mac os
Note: The Video Grabber library only exists for Mac OS and Windows systems. Finally, I include some random notes that I have come across in which other Rev developers have described their experiences with the Video Grabber. First I'll describe the basic process of video capture, then give a listing of all of the video grabber commands included with Revolution. There is very little written on how to use it, so this is an attempt to gather all the information I can find about it into a single place. Revolution includes an external library of commands that lets you capture video from a camera attached to your computer, using capabilities included in QuickTime. Office of Digital Humanities Back BYU LiveCode Lessons Gateway Using the Revolution Video Grabber
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