> > If I try to take a picture: > > > > /usr/bin/v4lctl -c /dev/video0 snap jpeg 320x240 > > /home/dae51d/public_html/nokia_cam.jpg > > /usr/bin/v4lctl -c /dev/video1 snap jpeg 320x240 > > /home/dae51d/public_html/ittybitty_cam.jpg > > > > Then the first one works fine, but the second one is failing with: > > > > v4l2: open /dev/video1: No such device > > v4l2: open /dev/video1: No such device > > v4l: open /dev/video1: No such device > > no grabber device available > > yes, you probably have one bttv device with a number of inputs. you > need to switch inputs. they are usually called TV, Composite, S-Video > etc. If there is more than one composite they might be called > Composite-1, Composite-2 etc > > On the other hand they may be audio inputs? 4 composite inputs is > rather excessive I would have thought.
The PCI card looks kind of like this one: http://www.hauppauge.com/pages/products/data_impactvcb.html But it has 3 RCA Inputs and and S-VIDEO input (see bottom of page) > By the way which package does v4lctl come in? # equery belongs v4lctl [ Searching for file(s) v4lctl in *... ] media-tv/xawtv-3.94-r1 (/usr/bin/v4lctl) > ok it is part of xawtv. just refreshing myself, you can see a list of > available parameters with > > v4lctl -c /dev/video0 list attribute | type | current | default | comment -----------+--------+---------+---------+----------------------------------- -- norm | choice | PAL | PAL | PAL NTSC SECAM PAL-Nc PAL-M PAL-N NTSC-JP PAL-60 input | choice | Televis | Televis | Television Composite1 S-Video Composite3 audio mode | choice | mono | mono | mono stereo lang1 lang2 bright | int | 32768 | 32768 | range is 0 => 65535 contrast | int | 32768 | 32768 | range is 0 => 65535 color | int | 32768 | 32768 | range is 0 => 65535 hue | int | 32768 | 32768 | range is 0 => 65535 mute | bool | off | off | chroma agc | bool | off | off | combfilter | bool | off | off | automute | bool | on | off | luma decim | bool | off | off | agc crush | bool | on | off | vcr hack | bool | off | off | whitecrush | int | 207 | 207 | range is 0 => 255 whitecrush | int | 127 | 127 | range is 0 => 255 So this doesn't mention anything about the inputs. I would have thought they would be /dev/video0 ... Video2 Since the way that I take a snap with one camera attached to the card is like this: /usr/bin/v4lctl -c /dev/video0 snap jpeg 320x240 /home/dae51d/public_html/nokia_cam.jpg Notice the "-c /dev/video0" -- gentoo-user@gentoo.org mailing list
