More than one camera on Firewire.

Discussion in 'Amateur Video Production' started by Dr. Pastor, Feb 2, 2004.

  1. Dr. Pastor

    Dr. Pastor Guest

    I want to connect three cameras to my
    laptop computer. (Working simultaneously.)
    Did any of you connect more than one
    cameras via Firewire?
    Best Regards.
     
    Dr. Pastor, Feb 2, 2004
    #1
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  2. "Dr. Pastor" wrote ...
    It seems safe to assume that this will NOT work unless you can
    find some definitve information otherwise.

    Most cameras/VCRs appear to just stream the DV data out
    the firewire port and are likely not designed to "share" with
    other cameras. Furthermore you may run completely out of
    bandwith with a few as two live sources (cameras, etc.)

    What software do you have that can handle three concurrent
    DV streams? What hardware do THEY recommend?
     
    Richard Crowley, Feb 3, 2004
    #2
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  3. Dr. Pastor

    Johan Stäck Guest

    From personal experience, I know that my two Sony camcorders (TRV900 and
    TRV12) will coexist peacfully.
    If I connect them to a fw hub sharing a single fw port in the PC, it works
    fine.
    I have also connected them to a PCMCIA fw card with two ports.
    You can easily verify the functionality by building some test graphs in
    Grapedit.

    There may exist combinations of cameras and other hardware that won't
    function, but these can be avoided.

    /Johan S
     
    Johan Stäck, Feb 3, 2004
    #3
  4. Are you saying that you can switch between them?
    Are you able to record camera output rather than VTR?

    Robin.
     
    Robin Davies-Rollinson, Feb 3, 2004
    #4
  5. Dr. Pastor

    Johan Stäck Guest

    Oh yes, they are both individually "adressable" (in Direct/X) and I can
    accept input from them one-by-one or both simultaneously.
    I'm not sure that I understand this question.
    Anything that the camcorder outputs through its fw output, I can receive as
    input in my program.
    It can be live video from the camcorder in "camera mode" or pre-recorded
    video from tape with camcorder in "Player mode".
    Firewire data is the same, and the program knows no difference..

    /Johan
     
    Johan Stäck, Feb 3, 2004
    #5

  6. Fine, understood! Thanks for that.

    Robin.
     
    Robin Davies-Rollinson, Feb 3, 2004
    #6
  7. Dr. Pastor

    Jerry Jones Guest

    Jerry Jones, Feb 3, 2004
    #7
  8. Dr. Pastor

    Dr. Pastor Guest

    Thank you Mr. Jones.
     
    Dr. Pastor, Feb 3, 2004
    #8
  9. "Johan Stäck" wrote ...
    Define what YOU mean by "coexist"?

    Do you mean that you can play (or shoot) with two cameras
    connected to the same firewire port and CONCURRENTLY
    capture TWO DIFFERENT video steams from the two cameras?

    Or do you mean that you can capture from one OR the other
    (whichever one is running at the moment)? I strongly suspect
    the latter.
     
    Richard Crowley, Feb 4, 2004
    #9
  10. Dr. Pastor

    Johan Stäck Guest

    I can concurrently capture video from two cameras ( two video streams)
    connected to one firewire port through a firewire hub.
    (Or I can connect the two cameras to the two firewire ports on my present
    computer)
    Normally, I use my own software for this (using Direct/X for capture), but
    the process can easily be verified using Graphedit.

    Even simpler: when a camera gets connected, XP says "bing.." and a camcorder
    icon appears on the desktop.
    Double-Clicking on the icon gives a live preview.
    Each icon is named "SONY DV camcorder" (or something similar, I am not at
    home right now...), but they represent the individual cameras, as can easily
    be verified from looking at the preview window...

    I will be borrowing a couple of more camcorders soon and try to run 4
    streams...
    I suspect that 4 cameras will not work through the hub and a single firewire
    port, but maybe 3..

    /Johan S
     
    Johan Stäck, Feb 4, 2004
    #10
  11. Dr. Pastor

    Dr. Pastor Guest

    Thank you Sir! Exactly what I was looking for.
    I will be very interested of any further news of
    your experience with multiple cameras.
    Best Regards.
     
    Dr. Pastor, Feb 4, 2004
    #11
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