I have not seen a video capture card with BNC connectors.
I am monitoring CCTV security cameras.
I use adapters, I wire up a 75 ohm coax with F-connectors at each end and
then use a "f to bnc" at the camera ends, and a "f to rca" at the osprey
(computer) end.
At 05:57 PM 10/21/2002, you wrote:
I did, Jim, but it does not have a BNC connector, only composite and
s-video...
-- Georgios
----- Original Message -----
From: "Jim Dodgen" <Jim.Dodgen@xxxxxxxxxxxx>
To: <video4linux-list@xxxxxxxxxx>
Sent: Monday, October 21, 2002 4:38 PM
Subject: Re: Frame grabbers with bt8x8 chipset
> look at the Osprey 100 it is a pure frame grabber
>
> At 10:52 AM 10/21/2002, you wrote:
> >Georgios Kapetanakis wrote:
> > >
> > > Hi all,
> > >
> > > I know this is getting slightly away from the core interest of the
> > list, but
> > > I need your help once more. I am convinced now that getting a frame
grabber
> > > with a bt8x8 chipset is the best way to go, as far as driver support
is
> > > concerned (bttv).
> > >
> > > I know of only two frame grabbers with this chipset:
> > > - Imagenation PXC200AL
> > > - Sensoray 611
> > >
> > > Are there any more? Please note that I am interested in frame grabbers
for
> > > computer vision, not TV/Tuner cards....
> >
> >But what's the difference between a computer vision grabber and a TV
> >card with the channel set to the raw video input?
> >Following for example is the output of a test program I wrote using the
> >functions in linux/videodev.h to query the bttv driver. You can set the
> >channel to 1 to receive video. I'm pretty sure that the video quality is
> >mostly limited by the video format itself, and that any grabber will
> >produce similar output for a given NTSC or PAL signal. The only other
> >issue is progressive scan, where you grab only a part of an image, but
> >there you might be better off getting a dedicated camera with image
> >processing built into it.
> >
> >
> >Hello world. Today we are going to look at the video grabber at
> >/dev/video
> >name of /dev/video: BT878(Hauppauge (bt878))
> >VID_TYPE_CAPTURE Can capture to memory
> >VID_TYPE_TUNER Has a tuner of some form
> >VID_TYPE_OVERLAY Can overlay its image onto the frame buffer
> >VID_TYPE_CLIPPING Overlay clipping is supported
> >VID_TYPE_FRAMERAM Overlay overwrites frame buffer memory
> >VID_TYPE_SCALES The hardware supports image scaling
> >Type 0xEB
> >4 channels
> >1 audio device
> >Max width: 768 Max height: 480
> >Min width: 48 Min height: 32
> >Video frame buffer base 0xe8000000
> >height 768 width 1024
> >depth 16
> >bytes per line 2048
> >
> >* * * Channel 0: Television
> >has 1 tuner
> >Flags: 0x3: has tuner; has audio
> >Type: 0x1: TV; not camera
> >Norm: 0x1: NTSC
> >brightness 0x7FFF
> >hue 0x7FFF
> >colour 0x7D70
> >contrast 0x6B84
> >whiteness 0x0
> >depth 0x10
> >VIDEO_PALETTE_RGB565 565 16 bit RGB
> >* * * Channel 1: Composite1
> >has 0 tuners
> >Flags: 0x2: no tuner; has audio
> >Type: 0x2: not TV; camera
> >Norm: 0x1: NTSC
> >brightness 0x7FFF
> >hue 0x7FFF
> >colour 0x7D70
> >contrast 0x6B84
> >whiteness 0x0
> >depth 0x10
> >VIDEO_PALETTE_RGB565 565 16 bit RGB
> >* * * Channel 2: S-Video
> >has 0 tuners
> >Flags: 0x2: no tuner; has audio
> >Type: 0x2: not TV; camera
> >Norm: 0x1: NTSC
> >brightness 0x7FFF
> >hue 0x7FFF
> >colour 0x7D70
> >contrast 0x6B84
> >whiteness 0x0
> >depth 0x10
> >VIDEO_PALETTE_RGB565 565 16 bit RGB
> >* * * Channel 3: Composite3
> >has 0 tuners
> >Flags: 0x2: no tuner; has audio
> >Type: 0x2: not TV; camera
> >Norm: 0x1: NTSC
> >brightness 0x7FFF
> >hue 0x7FFF
> >colour 0x7D70
> >contrast 0x6B84
> >whiteness 0x0
> >depth 0x10
> >VIDEO_PALETTE_RGB565 565 16 bit RGB
> >
> >
> >
> >/\/\/\/*=Martin
> >
> >
> >
> >_______________________________________________
> >Video4linux-list mailing list
> >Video4linux-list@xxxxxxxxxx
> >https://listman.redhat.com/mailman/listinfo/video4linux-list
>
>
>
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