[ELECTRON] bash CLI USB/FireWire webcam frame graber ~ VideoScript?

[Ben Rush]

Simon - et al,

Just discovered wacaw on my own yesterday - that was exciting. I hadn't
taken the moment to post the discovery yet - so Simon you beat me to it.

for those that are interested - wacaw (http://webcam-tools.sourceforge.net)
is a CLI app for os x which works with any device that is quicktime enabled,
including dv video cameras via firewire and usb/firewire web cameras. It
captures stills in various formats as well as .avi movies with sound. I've
read that it may have problems being triggered by cron or launchd - but this
was from a newsgroup article posted in
2007<http://forums.macosxhints.com/archive/index.php/t-77266.html>,
so may be fixed by now.

As an aside there is also isightcapture
http://www.intergalactic.de/pages/iSight.html for isight cameras only, and
isn't being developed anymore.

Everyone - thank you for all for your help - I now have a whole suit of
tools depending on what platform I end up with.
Now off to teach myself bash scripting - expect questions ;)

Cheers,
ben rush


2009/5/6 Simon Yuill <simon at lipparosa.org>

> Hi Ben,
>
> this might be what you need:
>
> http://webcam-tools.sourceforge.net
>
> best wishes
> Si
>
>
>
>
>
>
> Christopher Orr wrote:
> > Hi Ben,
> >
> > Sorry about that, I must have been mistaken.  I just looked for dvgrab
> > in my OS X install, but couldn't see it.  I must have booted into my
> > Ubuntu partition on my MacBook when I ran it.
> >
> > Thinking about it, it's likely not particularly simple to get it running
> > on OS X due to the hardware interfacing required.  Hopefully you can get
> > things running on Linux though.  Sorry I can't suggest a Mac-based
> > alternative.
> >
> > Chris
> >
> >
> > On 4 May 2009, at 12:44, Ben Rush wrote:
> >> Chris -
> >>
> >> Kinodv/dvgrab looks like it might be a silver bullet - and while I do
> >> have access to a Linux setup, I'm curious where you found a OS X
> >> distribution. Fink/Ports don't seem to have dvgrab / kino and I've
> >> been googling for any mention of success on Mac with out any joy. Now
> >> im not too fluent with Linux so perhaps I'm just showing off my
> >> ignorance.
> >>
> >> best - ben rush
> >>
> >>
> >>
> >>
> >>
> >> 2009/5/4 Christopher Orr <chris at orr.me.uk>
> >> On 3 May 2009, at 16:10, Ben Rush wrote:
> >> Hello all -
> >>
> >> Looking for some advice or insight. I know the electron club is a
> >> diverse group so fire away if any of you have any thoughts but perhaps
> >> someone may know of an appropriate *nix forum for this as well? Google
> >> hasn't given me a whole lot to play with.
> >>
> >> I'm trying to capture frame grabs from usb/fire wire web cams via a
> >> bash script. So far I've run across this CLI app called VideoScript
> >> which looks promising. I know I could use PD to do such a thing, but
> >> the rest of my work flow is shaping up to be neatly wrapped up in one
> >> shell script.
> >>
> >> I don't know if this is appropriate for the kind of camera you have,
> >> but you could try dvgrab from kinodv.org.
> >>
> >> The command line I've used (from a webcam-grabbing script that Simon
> >> wrote) is:
> >> sudo dvgrab --format jpeg --jpeg-overwrite --jpeg-width 360
> >> --jpeg-height 288 --jpeg-deinterlace --every 75 <filename-prefix>
> >>
> >> That happily worked for me (in both OS X and Linux) to capture frames
> >> directly -- over Firewire -- from a DV video camera.
> >>
> >> Chris
> >>
> >>
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