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Index › Programming Questions & Help › Video Capture,  Movie Playback,  Vision Libraries › video capture error: StdQTException.java:38
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video capture error: StdQTException.java:38 (Read 1487 times)
riaanvj
video capture error: StdQTException.java:38
Aug 13th, 2005, 4:51pm  
hi guys/girls,

i'm a newbie.

i have QTjava installed and all looks fine, but get this error trying to connect to logitech express webcam:

quicktime.std.StdQTException[QTJava:6.1.0g1],-50=paramErr,QT.vers:6528000
at quicktime.std.StdQTException.checkError(StdQTException.java:38)

although the "flight404" live video code works fine with my setup...

any suggestions?

thanx.
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fry
Re: video capture error: StdQTException.java:38
Reply #1 - Aug 13th, 2005, 5:19pm  
have you read the faq?
http://processing.org/faq/bugs.html#video

chances are you're missing winvdig if you're running on windows. though i'm not quite sure what you mean by the other video code working, does that mean that the camera input works fine with that, but when you're running the camera examples it doesn't work?
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riaanvj
Re: video capture error: StdQTException.java:38
Reply #2 - Aug 13th, 2005, 5:35pm  
hi fry,

yes, i meant to say the video input works fine with that code, but not when just trying to capture some video using:

import processing.video.*;
Capture myCapture;

void setup()
{
 size(200, 200);
 // The name of the capture device is dependent those
 // plugged into the computer. To get a list of the
 // choices, uncomment the following line
 // println(Capture.list());
 String s = "Logitech QuickCam Messenger-WDM";
 myCapture = new Capture(this, s, width, height, 30);
}

void captureEvent(Capture myCapture) {
 myCapture.read();
}

void draw() {
 image(myCapture, 0, 0);
}

i have read the FAQ and have Winvdig installed.

sorry i somehow overlooked this thread:-)

thanx for your response.
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fry
Re: video capture error: StdQTException.java:38
Reply #3 - Aug 13th, 2005, 5:43pm  
is your camera named "Logitech QuickCam Messenger-WDM", or is that just what was in the example?

try using:
myCapture = new Capture(this, null, width, height, 30);

which should bring up a prompt for you to select a camera.
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riaanvj
Re: video capture error: StdQTException.java:38
Reply #4 - Aug 13th, 2005, 5:53pm  
well that didn't bring up a dialogue to choose a camera, but it did work as i'm getting display now.

i have the "Logitech QuickCam Express WDM" and did change the reference originally but had same problem so i thought it didn't matter.

Fixed!
thanks.
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fry
Re: video capture error: StdQTException.java:38
Reply #5 - Aug 14th, 2005, 9:19pm  
sorry, we changed the behavior at beta. old information. setting to null or "" just gives you the first available camera.

calling capture.settings() will bring up the prompt if you want to set it to something else.
http://processing.org/reference/libraries/video/Capture_settings_.html

it appears that you just had the camera name wrong.
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fry
Re: video capture error: StdQTException.java:38
Reply #6 - Aug 14th, 2005, 9:34pm  
i'm adding a note to try and make this error message more descriptive since this has the potential to confuse others as well:
http://dev.processing.org/bugs/show_bug.cgi?id=130
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