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Found 2 results

  1. For years now in the student labs we've used firewire video cams and the IMAQ 1394 driver to create AVI files which then get read and converted to intensity arrays for motion analysis in a Labview app. The cheap cams are going extinct, and they want to use I-pads to create the videos which are MOV Quicktime format. So far it looks like the I-pad app they want to use can't be made to spit out an uncompressed AVI. So now I need to find out if I can either: 1) automate conversion of an MOV to uncompressed AVI and continue to use our LV analysis app as-is, or 2) find a way to parse a compressed MOV video to a frame-by-frame intensity array, and build that into our LV analysis app. I am starting to search, but is anybody aware of an existing library or methods so I don't reinvent the wheel? Thanks, BG
  2. Hi, I've got a bunch of quicktime videos that I'd like to analyse - open them and do some image processing on every frame. From what I understand, that cannot be done with the quicktime ActiveX object. I've looked through the methods and properties and I couldn't find anything that would let me extract a single frame. So, I'm opening the topic again: How can I read quicktime .mov videos (on windows)? All I found was Chris's Quicktime VIs, which, to me, seems like a half finished job. It works but it's not great. The biggest problem I have is that it takes a very long time to read a video file - even if I don't display the frames in a picture control. This snippet here (you need to get the qtlib for it to work) runs at just 20fps for a 640x480 video: Is there anything better out there? Cheers, Tom
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