Thanks for the help guys! It turns out that it works just fine with
luvcview in
the original USB port I had it in. However none of my other software can
get
images from it. For example, with my previous webcam I would use
"camsource" to
grab images and dump them into my webserver to host a webcamera. However
camsource cannot get an image from the device:
Error while reading from device '/dev/video0': No such device
Device 'default' returned no image
monster luvcview # ls -l /dev/video0
lrwxrwxrwx 1 root root 10 2007-02-04 11:54 /dev/video0 -> v4l/video0
monster luvcview # ls -l /dev/v4l/video0
crw-rw---- 1 root video 81, 0 2007-02-04 11:54 /dev/v4l/video0
luvcview has no problem though:
Video driver: x11
A window manager is available
video /dev/video0
So... I guess my concern is what kind of video capturing software can I
use with
the driver then to capture images to the disk in some sort of streaming
fashion?
Thanks again for the help!
- George
Luis Delgado de Mendoza Garcia wrote:
> I've been playing with uvc, and the most common source of problems is
the
> USB (in my experience).
>
> You have to plug the camera in a USB2.0, and make it sure that is 2.0,
> not a
> Hub and not a usb extension to plug more devices in the same bus. It
might
> also help if you plug the webcam in an isolated bus, i mean, only 1
device
> per USB bus (they are often set by couples)
>
> While testing in my computer, realised that plugging in a 1.0 or 1.1,
makes
> the /dev/video0 or the /dev/v4l/video0, but it never gives a valid
image.
> That should be because the webcam gives you 2 kind of frames, compressed
> and
> YUYV, and only compressed is available in a 1.0 or 1.1 USB.
>
> The most tipical behaviour in capture software is
> to bail out decoding if the format on the buffer is unsupported.
>
> try with that or pray to god. :D
>
> bye!
>
>
>
> On 2/4/07, Laurent Pinchart <laurent.pinchart (at) skynet.be> wrote:
>>
>> Hi George,
>>
>> > I recently got a Logitech Quickcam Notebook Pro and was trying to use
>> the
>> > UVC driver to get it working. I checked out a trunk as of 10 minutes
>> ago,
>> > did a make, make install... and plugged in my camera. I then saw
this:
>> >
>> > usb 1-4.3: new high speed USB device using ehci_hcd and address 8
>> > usb 1-4.3: configuration #1 chosen from 1 choice
>> > uvcvideo: Found UVC 1.00 device <unnamed> (046d:08cb)
>> > usbcore: registered new driver uvcvideo
>> > USB Video Class driver (v0.1.0)
>> >
>> > it created /dev/v4l and /dev/v4l/video0
>> >
>> > I then opened up mplayer, which I am successfully able to watch TV in
>> with
>> > ivtv since i built in support for v4l... however when I open up
video0
>> in
>> > mplayer i get: Playing /dev/v4l/video0.
>> > Win32 LoadLibrary failed to load: avisynth.dll, /avisynth.dll,
>> > /usr/lib/win32/avisynth.dll, /usr/local/lib/win32/avisynth.dll
>> >
>> > and the video from the camera never plays.
>> >
>> > I also tried using "camsource" which worked with another webcam of
mine
>> on
>> > a separate computer and that also was not able to open the device and
>> > capture an image.
>> >
>> > The website says this camera is supported, and the hardware ID
matches.
>> >
>> > Just looking for any help and suggestions! I would greatly
appreciate
>> it.
>>
>> Could you pleas try luvcview ? Some software don't work with the Linux
>> UVC
>> driver, as they don't implement V4L2 support properly (or at all).
>>
>> Best regards,
>>
>> Laurent Pinchart
>>
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>
>
>
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