Description of problem: I can start zbarcam just fine and get no errors, not even when I enable verbose-output. But it doesn't show the webcam-image or recognize codes. The light of my webcam goes on, so the device can be opened fine. And if I enlarge the zbarcam-window I get to see a (corretly showing) live-video part from the webcam. So it seems to fetch video somehow - but can't preview or process it?
Hi Mauro, Have you seen this before? Thanks!
(In reply to Stefan Neufeind from comment #0) > Description of problem: > I can start zbarcam just fine and get no errors, not even when I enable > verbose-output. But it doesn't show the webcam-image or recognize codes. > > The light of my webcam goes on, so the device can be opened fine. And if I > enlarge the zbarcam-window I get to see a (corretly showing) live-video part > from the webcam. So it seems to fetch video somehow - but can't preview or > process it? What's the zbar/kernel version? Thanks
kernel-4.2.3-200.fc22.x86_64 zbar-0.10-22.fc22.x86_64 verbose says: _zbar_video_open: opened camera device /dev/video0 (fd=5) _zbar_v4l2_probe: Integrated Camera on usb-0000:00:14.0-8 driver uvcvideo (version 4.2.3) _zbar_v4l2_probe: capabilities: CAPTURE READWRITE STREAMING v4l2_reset_crop: crop bounds: 640 x 480 @ (0, 0) v4l2_reset_crop: current crop win: 640 x 480 @ (0, 0) aspect 1 / 1 ERROR: zbar video in v4l2_reset_crop(): system error: setting default crop window (VIDIOC_S_CROP): Inappropriate ioctl for device (25) v4l2_probe_formats: current format: YUYV(56595559) 640 x 480 (line=0x500 size=0x96000) WARNING: zbar video in v4l2_probe_iomode(): system error: USERPTR failed. Falling back to mmap: Invalid argument (22) _zbar_v4l2_probe: using I/O mode: MMAP _zbar_window_probe_xv: XVideo extension version 2.2 xv_probe_port: probing port 79 with 1 encodings: xv_probe_port: max XV_IMAGE size 16384x16384 xv_probe_port: 5 image formats xv_probe_port: probing port 143 with 1 encodings: xv_probe_port: max XV_IMAGE size 8192x8192 xv_probe_port: 3 image formats v4l2_set_format: set new format: YUYV(56595559) 640 x 480 (0x96000) v4l2_init: using 4 buffers (of 4 requested)
same for: kernel-4.2.5-300.fc23.x86_64 zbar-0.10-24.fc23.x86_64
Hi Stefan, Looks like it's the XV driver. Unfortunately, I cannot help with that at this moment. You might want to contact zbar developers at http://sourceforge.net/p/zbar/discussion/?source=navbar