Reliable 1 frame/sec jpeg recording?

Discussion in 'UK Photography' started by Peter, Sep 18, 2009.

  1. Peter

    Peter Guest

    I have tried various bits of software but nothing seems to be
    reliable. The latest I have used is Conquercam but it crashes after
    random periods (says it cannot find the webcam, and one has to
    completely exist the program and restart it). It also fails to save
    the video size config and reverts to 320x240 each time. I need
    640x480.

    Is there something that can just run for many hours, 1 frame/sec?

    Can anyone recommend a good USB webcam for this purpose? I have been
    using a Logitech £70 (pricey) one whose quality is just-OK but it
    draws a lot of power - over 100mA - so I need to use it via a powered
    hub when using a laptop.

    Also every time Conquercam dies, I have to unplug it and plug it back
    in....
     
    Peter, Sep 18, 2009
    #1
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  2. Peter

    Simes Guest

    You don't say waht OS you are using, but assuming not Windows (as you
    want something reliable!) try camstream (Linux).
     
    Simes, Sep 18, 2009
    #2
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  3. Or if you have a digital camera (a normal one), then a simple script making
    use of gphoto2's remote control commands could trigger a shot a second quite
    easily. I suspect windows though, linux tends not to be that unreliable.
    --
    | |What to do if you find yourself stuck in a crack|
    | |in the ground beneath a giant boulder, which you|
    | |can't move, with no hope of rescue. |
    | Andrew Halliwell BSc |Consider how lucky you are that life has been |
    | in |good to you so far... |
    | Computer Science | -The BOOK, Hitch-hiker's guide to the galaxy.|
     
    Andrew Halliwell, Sep 18, 2009
    #3
  4. If they're accessable by gphoto2 in linux, yes.
    Whether similar functionality is available in windows, well that's a
    different matter and one I couldn't answer (due to the fact I don't do
    windows).

    the version of gphoto2 i have has 948 cameras in its driver list.
    Not all of them support remote capture, but the one I own does (canon
    powershot g2)
     
    Andrew Halliwell, Sep 18, 2009
    #4
  5. Peter

    Peter Guest

    What is involved in this? I am a hardware/software developer (embedded
    systems) but have never played with unix. I know rm -r but tha's about
    it...

    I can buy an Asus EEE 701 laptop on Ebay, with Linux. What would be
    involved in installing the gphoto2 program on that?

    Does gphoto support any of the small cameras e.g. the Casio 6xx 7xx
    8xx series? Certainly, the software which comes with these does not
    have any features for taking stills.
     
    Peter, Sep 19, 2009
    #5
  6. gphoto2 is a command line application. Normal usage involves commands like
    gphoto2 --autodetect (to detect the camera) followed by, say...
    gphoto2 --get-all-files (to grab all files off a camera)
    but it can also do

    -a, --abilities
    Display camera abilities.

    --new
    Only get not already downloaded files. This option depends on
    camera support of flagging already downloaded images and is not
    available for all drivers.

    --capture-preview
    Capture a quick preview.

    --capture-image
    Capture an image.

    --capture-movie
    Capture a movie.

    --capture-sound
    Capture an audio clip.

    (and lots of other things including "hook scripts" that can trigger on
    certain actions)
    I don't imagine it'd be difficult (assuming it's in the repository setup for
    the eeepc)... It might even be installed by default. It tends to be the
    backend for quite a few other camera/image downloaders.

    Rather than going to expense though, you could create a virtual machine
    using virtualbox or vmware (or similar), install linux on that and have a
    play. Or even dual boot it. No need to even partition it if you install
    ubuntu with "wubi" (I think it's called). It creates a virtual partition
    within windows that can be booted.
    The only casio's in the gphoto2 list here are...
    QM> gphoto2 --list-cameras | grep -i casio
    "Casio EX-S770"
    "Casio EX-Z120"
    "Casio EX-Z700"
    "Casio LV 10" (EXPERIMENTAL)
    "Casio QV10"
    "Casio QV100"
    "Casio QV10A"
    "Casio QV300"
    "Casio QV70"
    "Casio QV700"
    "Casio QV770"

    But software tends to be in continual development so the latest version may
    include more. Can't hurt to try.

    I imagine many cameras are overlooked because they can plug in and be seen
    as a storage device directly, without having to use extra software.
     
    Andrew Halliwell, Sep 19, 2009
    #6
  7. Peter

    Peter Guest

    Might give that a try. I have an EX-S770 right here.
     
    Peter, Sep 19, 2009
    #7
  8. Peter

    newshound Guest

    newshound, Sep 19, 2009
    #8
  9. Peter

    newshound Guest

    Sorry, not applicable if you need to record for a long time. But at webcam
    resolution you'd get near 100k shots on a big SDHC card (although that
    implies later models)
     
    newshound, Sep 19, 2009
    #9
  10. Peter

    Peter Guest

    A while ago I tried a Ricoh camera which had this feature built-in
    (like many have). But it was 1 image every 5 sec - no faster - and I
    never found a compact camera which could go faster. I do need 1 image
    per sec.

    I don't need more than 640x480 though, but one does need an SD card >
    2GB for this project (too many images) and only the most recent
    cameras support SDHC cards. But yes that would be a simple neat
    solution.
     
    Peter, Sep 20, 2009
    #10
  11. The powershot g2 uses compact flash (and can see 2Gig ones)
    --
    | | Windows95 (noun): 32 bit extensions and a |
    | | graphical shell for a 16 bit patch to an 8 bit |
    | Andrew Halliwell BSc | operating system originally coded for a 4 bit |
    | in |microprocessor, written by a 2 bit company, that|
    | Computer Science | can't stand 1 bit of competition. |
     
    Andrew Halliwell, Sep 20, 2009
    #11
  12. Peter

    OG Guest

    You might be interested in exploring Knoppix, which is a bootable linux
    distro - depending on your how your internet is setup, you may have to
    investigate options for getting wireless connections working before you
    start, but it should allow you to get a working linux system running without
    having to pay for unnecessary hardware.
     
    OG, Sep 20, 2009
    #12
  13. These days, ubuntu is a live CD (or dvd) too.
    It likes being installed too of course, but it runs fine off the cd.
     
    Andrew Halliwell, Sep 20, 2009
    #13
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