Multiple camera on a laptop


    Jun 14 2006 | 10:58 pm
    I am trying to write a patch for a G4 15" laptop using Max 4.5.7 and
    Jitter 1.5. I want to have 5 cameras running on the same laptop. The
    cameras are porting in through a firewire hub that is powered.
    Ken
    ken@kennethfeinstein.com
    www.kennethfeinstein.com
    646-220-8257

    • Jun 14 2006 | 11:13 pm
      On Jun 14, 2006, at 3:58 PM, Kenneth Feinstein wrote:
      > I am trying to write a patch for a G4 15" laptop using Max 4.5.7
      > and Jitter 1.5. I want to have 5 cameras running on the same
      > laptop. The cameras are porting in through a firewire hub that is
      > powered.
      Depending on the camera type and resolution at which you are
      transitting he capture data o he computer, it sounds like you would
      probably saturate the FW bandwidth. I think you should be able to
      deliver 3xIIDC @ 640x480 streams per 400Mb/s FW port (a hub does you
      no good here as they all share the single port's BW). You might
      investigate PCI slots which provide additional FW ports. However
      you'll also have to investigate saturating the PCI bandwidth and deal
      with CPU overhead, perhaps resulting in less than applicable
      framerates. Your application might require using multiple computers.
      Here's an Apple Tech note on the subject:
      More info by googling on IIDC bandwidth.
      -Joshua
    • Jun 15 2006 | 10:44 am
      see unibrain support
      page
      ptgrey has lots of knowledgebase articles
    • Jun 16 2006 | 5:15 pm
      i used - with success - 4 FW cameras on a Pb titanium (1 giga)
      those were unibrains, daisy chained, without being powered (other
      than the FW port)
      since i did not encounter any special problems (the rest of the
      jitter patch was pretty simple - just pick at random one of the 4
      images and send this to the 2nd screen for a duration chosen at
      random between x
      best
      kasper
      --
      Kasper T. Toeplitz
      noise, composition, bass, computer