I have made such a program. (attached as piclib.tar.gz) Its porpuse it to comminicate with the OpenCV library from Intel. Read the source. It should give you the basics. Maybee you can copy/paste a lot off it. it communicate via the bttv.o and videodev.o modules. Anders Gnistrup Michelle Zaller wrote: > Dear V4L Gurus, > > I would like to grab a single frame at a time of composite video to my > Linux PC, and would greatly welcome any advice on the best way to do > this. Sorry if this is off-topic here, please let me know where I should > be posting instead if I am off base(:-)). > 1. Are there any frame grabber cards that work "out-of-the-box" under any > Linux kernel version that could accomplish this simple feat? (If one > worked under the RH7.0 that I have already installed, that would be even > better!) > 2. Can anyone point to software that works with the v4l interface, which > can easily accomplish this task, or should I just use the v4l API? I don't > need any video compression, if that matters. > 3. Any recommendations for frame grabbing devices that could be used with > a laptop running Linux, to grab a composite video frame (speed is not an > issue, so I assume I could even use a USB port). I can't use a webcam, the > signal is coming from an existing camera. The Iomega Buz looks attractive, > but I see from Iomega's website, that they are no longer available from Iomega? > 4. Do I need to patch a 2.2.x kernel with the big_physarea patch for a > DC-10+ or LML-33 board? I have been mucking about with a LML-33 board with > RH7.0, as well as a DC-10+ under a vanilla 2.2.19 kernel for an alpha, and > they seem to work without the patch. > > Any comments, criticisms, things to try, things to avoid, etc. would be > very much appreciated. > Thanks in advance! > > -MZ > ------------------------------------------------------------------------------------------------------------------- > mzaller@xxxxxxxxx > > _______________________________________________ > Video4linux-list mailing list > Video4linux-list@xxxxxxxxxx > https://listman.redhat.com/mailman/listinfo/video4linux-list
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