zc3xx usb camera, what viewer?

[gene heskett]

On Tuesday, September 28, 2010 12:10:15 pm Nils Kassube did opine:

> gene heskett wrote:
> > I pulled out an old Labtec usb camera this morning to see if it would
> > work any better on a full speed usb2.0 circuit.  But I don't know
> > what display program to use.  It is assigned by udev as:
> > 
> > If I "cat /dev/video1" it is outputting data.
> > 
> > Does anyone have a spare clue as to what viewer works?
> 
> Try cheese from the package with the same name.
> 
Downloading now, thanks.  But its not working at all well although the 
color is better than it was 4 years ago.  Only the top 1/4th of the frame 
is anywhere near real time, and the shell I launched it from is getting 
about 8 lines a second of this:
libv4lconvert: Error decompressing JPEG: fill_nbits error: need 2 more bits
libv4lconvert: Error decompressing JPEG: fill_nbits error: need 2 more bits
libv4lconvert: Error decompressing JPEG: fill_nbits error: need 9 more bits
libv4lconvert: Error decompressing JPEG: fill_nbits error: need 1 more bits
libv4lconvert: Error decompressing JPEG: fill_nbits error: need 2 more bits
libv4lconvert: Error decompressing JPEG: fill_nbits error: need 4 more bits
libv4lconvert: Error decompressing JPEG: fill_nbits error: need 4 more bits

Is usb dropping the ball or ?? might be the problem?  It is plugged into a 
powered hub an additional hub tier away from the motherboard's port.  I 
have so many usb devices, the motherboard would nee to have about 32 ports 
if all were to be first level circuits.

I just put the keyboard/mouse on an unpowered 4 port hub, and plugged it in 
direct to one of the motherboard ports.  And that made it work.  And that 
brand new hub yesterday goes back to Staples tomorrow.  This thing is a cpu 
pig though. ;-(  Noticeably keeping a quad core phenom busy.

Thanks.  It turns out the camera is as poor as it ever was, excessive 
contrast and flattened highlights were a feature before, however the color 
is much improved over my original experiments with the spca5xx driver 
several years ago, on a motherboard that didn't have the cojones to handle 
it.

Thank you very much, Nils.

-- 
Cheers, Gene
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
You can learn many things from children.  How much patience you have,
for instance.
		-- Franklin P. Jones