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Index › Programming Questions & Help › Video Capture,  Movie Playback,  Vision Libraries › trying but failing to capture at 640x480
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trying but failing to capture at 640x480 (Read 1495 times)
ed
trying but failing to capture at 640x480
May 17th, 2005, 12:09pm  
I'm trying to capture at 640x480 but getting output that looks suspiciosly like a stretched 320x240 output (it's twice as blury as the 640x480 output I'm used to from the camera).

My camera is listed as "Logitech QuickCam Pro 4000-WDM" and as recomended I'm using WinVDIG Version 1.0 to get it into Quicktime [on windows xp]. The Logitech control panel / capture utility merrily shows a sharp(ish) 640x480 preview. However I can't seem to find how/where to change the capture size for WinVDIG, indeed the QTCap app it comes with only shows a 320x240 preview.

Has anyone else been here before?

p90 example code incase I'm doing something stupid...

Code:
import processing.video.*; 
Capture myCapture; 

void setup() 
{ 
  size(640, 480); 
  println(Capture.list()); 
  myCapture = new Capture(this, 640, 480); 
} 

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

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

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fry
Re: trying but failing to capture at 640x480
Reply #1 - May 17th, 2005, 4:11pm  
unless it's the camera, i think it's a limitation of winvdig, that it's using WDM (the older video api for windows) which is limited to 320x240.
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ed
Re: trying but failing to capture at 640x480
Reply #2 - May 17th, 2005, 4:19pm  
boo hoo, is there an alternative to WinVDIG that will get more pixels per penny?
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fry
Re: trying but failing to capture at 640x480
Reply #3 - May 17th, 2005, 4:38pm  
JMF (java media framework) might do it, but some kind sould would need to write a simple JMF lib... (hint, hint for anyone looking for a good project...)
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st33d
Re: trying but failing to capture at 640x480
Reply #4 - May 20th, 2005, 2:26am  
FYI, I'm pretty sure I can capture at 640x480 with a Creative web cam. I'm also sure there were settings for different sizes in vdig. I get scaling with a cruddier web cam. Then again I might be wrong but my good cam is photographing a building site every 30 seconds at the moment. Undecided
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