Terry said:
Thanks again!
Well, we seem to be approaching a solution to this issue, but not quite
there yet...
I show no USB device in Control Panel/Sounds Audio Device Properties, nor
does Audacity recognize USB device (in any mode). Never have seen USB device
in either Control Panel or Audacity.
I have re-downloaded webcam update drivers from HP, Phyically uninstalled
cam and reinstalled (x2). Have un-clicked "Use only default devices" in
Audio Device Properties (Control Panel). No change.
Appreciate any further suggestions....regards
Terry Davidson
In this example picture, the "Sound Recording" pulldown has three options.
In my case, one of the options is "USB Audio Device", and that is the
microphone on the webcam. Once I select "USB Audio Device", using
the control panel shown here, then in Audacity, the microphone monitor
will be monitoring audio from the webcam. I don't even need to be
running any webcam software in this case, because the USB audio
is a standard device and uses a Microsoft USB class driver.
http://www.pixelmetrics.com/Tips/VidTips/InUse.php
In Device Manager, under "Sound, video and game controllers",
I have "USB Audio Device". There are about eight driver files,
one of which is USBAUDIO.sys, and the other files all came with
WinXP.
I have an entry called "Imaging devices" and under that is
"USB Video Device". One of the driver files listed for that
entry, is "usbvideo.sys". So again, that is a standard class
driver, giving limited functionality (not full resolution).
Using UVCView, one of my computer ports reports
"USB Composite Device"
In the pane on the right in the UVCView window, there is a ton
of data, basically the enumeration of the video and audio sections
of the webcam. There is about 46KB of text in there, so I won't bother
copying it.
You can get a copy of UVCView from the archive here. It is about 164KB.
It is no longer offered for download by Microsoft, so an archived copy
is the next best thing.
http://web.archive.org/*/http://dow...f-a31d-436b-9281-92cdfeae4b45/UVCView.x86.exe
That doesn't explain what has happened to your webcam.
Normally, with USB devices, you first check the manual, and see if
the software requires the device to be installed before the drivers
are installed, or after the drivers are installed. Sometimes that
screws things up, if you get the order wrong. I don't keep my
webcam drivers installed, because the software leaves a lot of
junk processes running, which I don't want. I have limited
functionality in my case, by just plugging the camera in. But
to access the highest resolutions, I'd need to install the drivers
again.
So it could be related to the installation process. I don't know of
a way to undo things, such that your installation is guaranteed to
work.
If the driver is screwing up, I'd at least expect the plugged in
webcam, to have some entries in Device Manager with some mark on
them, showing the driver did not load properly or whatever.
If you run out of other sources of amusement, check the
setupapi.log file. For example, at the end of the file, I
can see this. This is presumably related to the "Imaging device"
entry in Device Manager.
[2009/09/01 00:57:15 1728.311 Driver Install]
#-019 Searching for hardware ID(s): usb\vid_046d&pid_0990&rev_0008&mi_00,usb\vid_046d&pid_0990&mi_00
#-018 Searching for compatible ID(s): usb\class_0e&subclass_03&prot_00,usb\class_0e&subclass_03,usb\class_0e
#-198 Command line processed: "C:\WINDOWS\system32\mmc.exe" C:\WINDOWS\system32\devmgmt.msc /s
#I063 Selected driver installs from section [USBVideo] in "c:\windows\inf\usbvideo.inf".
#I320 Class GUID of device remains: {6BDD1FC6-810F-11D0-BEC7-08002BE2092F}.
#I060 Set selected driver.
Paul
