Hi, Thanks. The webcam works fine with fswebcam. Only ffmpeg hangs... :-( On Feb 2, 2014 9:45 PM, "Cinjon Resnick" <[email protected]> wrote:
> This was a while ago, but iirc, It happens when there isn't enough > current. The solution is to make sure that the BBB was turned on via the > barrel power with the camera connected. If you're running the ucv camera > off of an auxiliary powered hub, then you don't need to have it connected > first, but you do need to have the barrel power plugged into the BBB before > turning it on. This is because otherwise the 5v flag is switched to off. > > > On Sun, Feb 2, 2014 at 12:31 PM, Moon Walker <[email protected]>wrote: > >> Same here. >> Did you find any solution? >> >> Attila >> >> >> On Wednesday, June 19, 2013 6:34:13 AM UTC+2, crown wrote: >>> >>> I have a ucv camera connected to the BBB. It's powered through the 5v >>> and the camera light turns on. I can see it fine in the usb. I've tried >>> taking a picture through multiple different avenues and have gotten the >>> following errors. Does anyone have any helpful tips to figuring this out? >>> >>> - Python OpenCV: >>> >>> >>> import cv2 >>> >>> capture = cv2.cv.CaptureFromCAM(0) >>> VIDIOC_QUERYMENU: Invalid argument >>> VIDIOC_QUERYMENU: Invalid argument >>> VIDIOC_QUERYMENU: Invalid argument >>> >>> - FFMPEG just stalls after the following and doesn't actually record a >>> frame. >>> >>> ubuntu@arm:~$ ffmpeg -f video4linux2 -i /dev/v4l/by-id/usb-Alcor_ >>> Micro__Corp._USB_2.0_PC_Camera-video-index0 -vframes 1 >>> /home/ubuntu/test.jpeg >>> ffmpeg version 0.8.6-6:0.8.6-1ubuntu2, Copyright (c) 2000-2013 the Libav >>> developers >>> built on Mar 31 2013 01:04:55 with gcc 4.7.2 >>> *** THIS PROGRAM IS DEPRECATED *** >>> This program is only provided for compatibility and will be removed in a >>> future release. Please use avconv instead. >>> >>> >>> Note that both methods work on my laptop (mac osx). >>> >>> >>> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to a topic in the >> Google Groups "BeagleBoard" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/beagleboard/vOCa2A6CD2Y/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> [email protected]. >> For more options, visit https://groups.google.com/groups/opt_out. >> > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to a topic in the > Google Groups "BeagleBoard" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/beagleboard/vOCa2A6CD2Y/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
