gtk - Python, Ubuntu and GStreamer - specifying one of two webcams -


Using the initial code from this question, I can get a live window from a webcam

I have two webcams on my system, and I want to specify which camera I am calling for the viewer.

I am poking around, and with nothing connected to it, I get this error: 

  Error: Resource not found. v4l2_calls.c (493): gst_v4l2_open (): / GstPipeline: pipeline0 / GstV4l2Src: v4l2src0: system error: such a file or directory   
 This notifies me that I To see the pipeline ... maybe  / GstPipeline: pipeline1 / GstV4l2Src: v4l2src0  or  / gstPipeline: pipeline0 / gstv4l2src: v4l2src1   
 My Ubuntu foo It's not good, and I'm not sure which camera I can specify to use. I suspect that there is something in this line that I can change:  
  self.player = gst.parse_launch ("v4l2src! Autovideosink")   
 Any suggestions?   
 
 
 Each camera should make the device  / dev / videoN  (where n one  
  v4l2src device = / - dev / video0! The Autovideoink   
 should work, where  device =  specifies which device to select as an input impression.  
 Have a look on the espap  
 
 Keep in mind that this is not a clear perspective -  gst_parse_launch  is a devtool and does not change the settings dynamically (I.e. volume level, brightness etc.) - are fixed for their lifetime. Section)

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