On 1/31/04 5:57 PM, "Chipp Walters" <[EMAIL PROTECTED]> wrote:
> Doug, > > I haven't used video frame grabbing, but I might suggest some things to > look at: > > When you call: > revVideoFrameImage userImageWidth, userImageHeight, "videoimagedata" > > you might want to include before it: > > set the defaultStack to "theStackWithTheVideo" You mean the stack with the video grabber window in it? > > (I assume it is not a palette, if it is, it might NOT work at all) It's not a palette. > > Also, see if you can do it all on the same stack as a test (just like > the example). If it does work, then you can isolate your frontmost > stack issues from there. Well, as a test I can do that in the sample stack. It would be hard to do as a test in my current app now considering how complicated it has gotten. But weirdest of all - it worked one time! But I couldn't repeat it after that. Also, sometimes the revCloseVideoGrabber that I call when I close the video grabber window (in closeStack) does not seem to get sent and I need to invoke it manually. Thanks, doug > > hope you get it working, > Chipp > > > > On Jan 31, 2004, at 2:38 AM, Doug Lerner wrote: > >> I have a question for you experts. >> >> I basically copied scripts from the sample video stack (where this >> works >> correctly), and most of it seems to be working in my stack. But when I >> try >> to grab a frame from the video grabber window it does not display in >> the >> target image after I use the "set imageData" command. >> >> Without boring you with all my code, this is the snippet that grabs the >> frame and sets the imageData: >> >> put empty into videoimagedata >> >> put the width of image "userPortrait" of stack portraitName into >> userImageWidth >> >> put the height of image "userPortrait" of stack portraitName into >> userImageHeight >> >> revVideoFrameImage userImageWidth, userImageHeight, "videoimagedata" >> >> set the imageData of image "userPortrait" of stack portraitName to >> videoimagedata >> >> >> Seems vanilla enough, right? The only thing I am doing different from >> the >> sample scripts is that my target image happens to be in another stack. >> >> All the stacks/windows are open and everything has the correct height >> and >> width set. >> >> If I log userImageWidth, userImageHeight and the captured >> videoimagedata, >> there are what seem to be correct values in all of them. Well, the >> height >> and width anyway seem correct. I can't visually confirm that the value >> of >> videoimagedata is correct, but it is the correct size - userImageWidth >> x >> userImageHeight x 4. >> >> If I "put image userPortrait" there is what appears to be PNG data in >> there. >> >> If I check the "number of characters of the imageData of image >> userPortrait" >> there is the correct 57,600 characters in there (the image is 120x120). >> >> And the paintCompression of image userPortrait is "png" in my stack >> and also >> in the sample stack. >> >> But: >> >> * No image is displayed (even though it is displayed in the video >> grabber >> window of course) >> >> * If I "put the imageData of image userPortrait" the value displayed >> looks >> empty in the message box - not even garbage characters. >> >> Any ideas? >> >> Thanks! >> >> doug >> >> >> _______________________________________________ >> use-revolution mailing list >> [EMAIL PROTECTED] >> http://lists.runrev.com/mailman/listinfo/use-revolution >> > > _______________________________________________ > use-revolution mailing list > [EMAIL PROTECTED] > http://lists.runrev.com/mailman/listinfo/use-revolution _______________________________________________ use-revolution mailing list [EMAIL PROTECTED] http://lists.runrev.com/mailman/listinfo/use-revolution
