### v4l2 device info [/dev/video1] ###
general info
VIDIOC_QUERYCAP
driver : "uvcvideo"
card : "UVC Camera (046d:0821)"
bus_info : "usb-0000:00:1d.7-4"
version : 1.1.0
capabilities : 0x4000001 [VIDEO_CAPTURE,STREAMING]
standards
inputs
VIDIOC_ENUMINPUT(0)
index : 0
name : "Camera 1"
type : CAMERA
audioset : 0
tuner : 0
std : 0x0 []
status : 0x0 []
video capture
VIDIOC_ENUM_FMT(0,VIDEO_CAPTURE)
index : 0
type : VIDEO_CAPTURE
flags : 0
description : "YUV 4:2:2 (YUYV)"
pixelformat : 0x56595559 [YUYV]
VIDIOC_ENUM_FMT(1,VIDEO_CAPTURE)
index : 1
type : VIDEO_CAPTURE
flags : 1
description : "MJPEG"
pixelformat : 0x47504a4d [MJPG]
VIDIOC_G_FMT(VIDEO_CAPTURE)
type : VIDEO_CAPTURE
fmt.pix.width : 640
fmt.pix.height : 480
fmt.pix.pixelformat : 0x56595559 [YUYV]
fmt.pix.field : NONE
fmt.pix.bytesperline : 1280
fmt.pix.sizeimage : 614400
fmt.pix.colorspace : SRGB
fmt.pix.priv : 0
controls
VIDIOC_QUERYCTRL(BASE+0)
id : 9963776
type : INTEGER
name : "Brightness"
minimum : 0
maximum : 255
step : 1
default_value : 128
flags : 0
VIDIOC_QUERYCTRL(BASE+1)
id : 9963777
type : INTEGER
name : "Contrast"
minimum : 0
maximum : 255
step : 1
default_value : 32
flags : 0
VIDIOC_QUERYCTRL(BASE+2)
id : 9963778
type : INTEGER
name : "Saturation"
minimum : 0
maximum : 255
step : 1
default_value : 32
flags : 0
qv4l2 will not detect my external webcam....only the internal one.
I have tried guvcview which is based on luvcview...but that does not work
either.
On Mon, Oct 31, 2011 at 5:00 AM, Gregor Jasny <[email protected]>
wrote:
> Thanks for the application output. At the moment it looks like a kernel
> or driver problem. Libv4l could not start streaming.
>
> Please run some additional commands:
>
> 1: Kernel messages : They should indicate if there is a driver or USB
> problem. First run your failing camera program. Then, please open a
> terminal and type 'dmesg > dmesg.txt. Please attach the generated text
> file.
>
> 2: Run v4l-info /dev/video1 (assuming video1 is the external device).
> You find this program in the package v4l-conf.
>
> 3. Run qv4l2 (package qv4l2). Are you able to get a proper stream with
> this program?
>
> If your camera uses the UVC driver (you can check the v4l-info output)
> you could also try luvcview.
>
> Thanks,
> Gregor
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/875379
>
> Title:
> Cheese not working properly for external webcam
>
> Status in “v4l-utils” package in Ubuntu:
> Incomplete
>
> Bug description:
> Cheese will not operate properly with an external webcam. It used to
> work properly in 10.10. It worked for while with 11.04...and worked
> for a while with 11.10. It seems to work whenever there is a change to
> the kernel....but after working for the first time, it no longer works
> after that....even if you reboot.
>
> ProblemType: Bug
> DistroRelease: Ubuntu 11.10
> Package: libv4l-0 0.8.5-3ubuntu1
> ProcVersionSignature: Ubuntu 3.0.0-12.20-generic-pae 3.0.4
> Uname: Linux 3.0.0-12-generic-pae i686
> ApportVersion: 1.23-0ubuntu3
> Architecture: i386
> Date: Sun Oct 16 12:35:54 2011
> SourcePackage: v4l-utils
> UpgradeStatus: Upgraded to oneiric on 2011-10-08 (7 days ago)
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/ubuntu/+source/v4l-utils/+bug/875379/+subscriptions
>
** Attachment added: "dmesg.txt"
https://bugs.launchpad.net/bugs/875379/+attachment/2579384/+files/dmesg.txt
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/875379
Title:
Cheese not working properly for external webcam
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/v4l-utils/+bug/875379/+subscriptions
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