webcam video capture

usleepless at usleepless at
Thu Mar 20 16:51:18 UTC 2008

On Thu, Mar 20, 2008 at 9:21 AM, Luigi Rizzo <rizzo at> wrote:
> On Thu, Mar 20, 2008 at 12:16:05AM -0700, Julian Elischer wrote:
>  > does anyone have anything that can capture video
>  > from the webcams that we have support for?
>  >
>  > I have been able to get still shots but I would like to be able to
>  > write a stream to a file..
>  >
>  >
>  > I could do it with firewire, but I need to do it with cheap
>  > hardware..
>  if you look at the pwcview application that is in the linux-kmod-compat
>  or linux-kmod-gspca, that one has support for writing raw or jpg
>  frames to disk. The source code is small and relatively simple
>  to modif, and it can run in headless mode.
>  Note though that for many of the webcams, the gspca driver does not
>  have good support for controlling brightness or contrast, which
>  basically means that outdoor pictures tend to come coimpletely
>  white.

i observed the same with my Pixart-chipset webcam, and have patches
for this problem.

i will try to get the patches applied upstream ( still messing about
with the agc ). if anyone is interested right now, make yourself



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