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Index › Programming Questions & Help › Video Capture,  Movie Playback,  Vision Libraries › Take snapshot and store frame from video capture?
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Take snapshot and store frame from video capture?? (Read 1323 times)
bennyJCB
Take snapshot and store frame from video capture??
Oct 8th, 2009, 7:43am  
Hi all,

Im currently undergoing a project using a number of webcams. First of all does anybody know how many live feeds i can get from one computer? 2 or 3?

I then need to capture and store a frame from the live feed.

I have already implemented the pause library, and a low frame rate technique to capture stills, but i would like to store them.

Thanks, BJCB
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louisa.ivy
Re: Take snapshot and store frame from video capture??
Reply #1 - Oct 8th, 2009, 4:03pm  
 long now = millis();
   if ((now - lastCaptureTime) >= period){
     String filename = "timelapse_" + nf(saveCount, 6) + ".jpg";
     saveFrame(filename);
     lastCaptureTime = now;
     saveCount++;
     myCapture.updatePixels(); // Save my modifications

This might help you just replace the myCapture with what ever your video is called.
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bennyJCB
Re: Take snapshot and store frame from video capture??
Reply #2 - Oct 9th, 2009, 8:02am  
Thanks for your help, i will try that tonight.

I have used the PDF library to record a snapshot of a video feed in the display window. As there isnt a JPG library, does anybody know how to store the exported images as JPG's instead of PDF's?

I will post the code tomorrow if anyone needs to see it,

(does anybody have comments on multiple video feeds?)

BJCB.
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