LiveCode Forums.

Hi All,
I searched a way to get the picture of camera desktop and i didn't find anything in the forum
Is it possible or not ?
Best regards
Jean-Marc

Hi Jean-Marc,

look in Help Menu -> Example Stacks and Resources -> Resources -> Sample Projects -> Video Capture.rev

/Applications/LiveCode 5.5.3.app/Contents/Tools/Resources/Sample Projects/Video Capture.rev

Kind regards
Bernd

Bonjour mes amies,

1. the example and the underlying technique is CRAP!
Simply because this is only working (somehow) on the Mac, I NEVER got it to work on WIndows, neither with VfW nor with QuickTime!
Maybe the new video capture mechanism (OS X only! See the "Release Notes") is better (well, everything is better than this ), but I did not try it out.

2. I am afraid this will only work with VIDEO cameras (DV, Webcams etc.) and not with a photo camera.
I think this is what Jean-Marc is asking for.


Best

Klaus

Hi Klaus,

the example and the underlying technique is CRAP!...
Simply because this is only working (somehow) on the Mac

I agree that there is ample room for improvement...

I thought Jean-Marc wanted to take a snapshot from the built-in camera on a Mac desktop computer. That does work from the preview of the example.

What does CRAP stand for?

Kind regards
Bernd

Hi Friends,
Thanks one more for help

the example and the underlying technique is CRAP!

I think so

Maybe the new video capture mechanism (OS X only! See the "Release Notes") is better (well, everything is better than this ), but I did not try it out.

Ok I'll study and test it and i'm coming back.

Would you have a look here ?:
http://forums.runrev.com/phpBB2/viewtop ... 400#p64603
I think the topic changed and that will be better to create a new topic "ProgressbarDuringDownloadDesktop". Right ?

Kind regards
Jean-Marc

Hi Bernd,

bn wrote:What does CRAP stand for?

See Jean-Marcs screenshot, which explains a LOT
I would translate it euphemistically with "Murks" into german


Best

Klaus

Hi Friends,

I think Jean-Marc's screenshot is the least of the problems.
The preview window is a "fake" window, it floats above everything. Just like RevBrowser.

But I do manage to get snapshots from the internal camera.

<joke>Although the snapshots do not clean up the room I am in. I would call that CRAP. I have to use Photoshop to take care of that mess. </joke>

Kind regards
Bernd

Hi Friends,
I looked revCapture library. I didn't find anything about it in the dictionary but the release notes says:

Mac – revCapture video capture library (4.6.1 – experimental)

I'm giving up this way
I just need a snapshot and the videoCapture does this part of the job
Kind regards

So, here I am with Livecode 7.0.1 on Mac 10.8 and when I go here: Help Menu -> Example Stacks and Resources

I get directed to the RunRev website via Firefox . . . rubbish.

So I dug down inside the Livecode app package to find "Video Capture.rev" file and copied it to my desktop.

In the "video setting" section of the stack I can see my "lovely face" via my cheap-and-nasty webcam attached to
my Mac 10.8.

But the picture does NOT show up when I click the "Start Preview" button, BUT the "Grab Image" works . . .

So tried a button with this:

on mouseUp
revInitializeVideoGrabber the short name of this stack, "QT", "10,10,310,310"
revPreviewVideo
end mouseUp

as per the Documentation and got ABSOLUTELY NOTHING.

So tried: revSetVideoGrabberRect 10,310,10,600

and the IDE threw a bluey [ revSetVideoGrabberRect 10,310,10,600 }

Downloaded Devin Asay's "VideoGrabberTest.rev" ] http://livecode.byu.edu/video/videoGrabber.php ] and got very
smilar results to before: No preview.

Hi Richmond,

LC now uses the AVFoundation for multimedia playback on the Mac now and NOT QuickTime anymore.

That means that -> "the dontuseqt" is set to TRUE per default in LC >=6.5x (?) and thus QT is not loaded
automatically anymore. Set it to FALSE in your pre-/openstack script and try again!

Or is it ONLY the preview that does not work and the rest does?


Best

Klaus

Does that mean I should also expect that to work with Linux?

richmond62 wrote:Does that mean I should also expect that to work with Linux?

No.

Hi Richmond

As I understand it with more recent versions of Mac OS X QuickTime is deprecated. The player is now AVfoundation based. revVideoGrabber is QuickTime based but is now somehow wrapped to allow it to work with AVFoundation but the problem is that not all the revVideoGrabber features are working.

There is a bug where the preview does not show up with revVideoGrabber.

http://quality.runrev.com/show_bug.cgi?id=14339

Try switching to another application and then switch back to your stack running revVideoGrabber.

I found this workaround makes the preview appear but is not an actual fix.

Martin

Um . . and the documentation is outdated . . . just for a change.