gabe's picture


Vuo version: 

Fixed in Vuo version: 

OS version: 

  • Mac OS 10.9

Steps causing the bug to occur: 

  1. Launch the FindBarcodeInSyphonImage.vuo example composition
  2. Scan a type PDF417 Barcode - here are a few on google images:
  3. You should see the text from the barcode displayed for a moment before the application crashes

How did the result differ from what you expected?: 

Other barcode types like datamatrix seem to work fine.

Crash reports: 

Plain text icon stacktrack.txt65.2 KB


I was able to reproduce the

jstrecker's picture
Submitted by
Waiting for review by Vuo Support Team

I was able to reproduce the crash with the attached composition FindBarcodeInMovingPDF417.vuo and image PDF417-3.png (from

Interestingly, the crash did not happen with the attached composition FindBarcodeInPDF417.vuo or with images PDF417-1.png (from and PDF417-2.png (from

The crash happens both in Vuo 1.1.1 and in Vuo 1.2.0 alpha 3. (I haven't tested earlier versions.)

Yes, I noticed it only

gabe's picture
Submitted by

Yes, I noticed it only crashes after recognizing a barcode in a moving image, not from a static image source. I think the crash is happening because the error handling in zxing is choking on the moving image. I noticed that it does not crash if I use the 'barcode' event to stop the image feed (ie, once it recognizes the barcode, it stops processing the image).