Using two FireWire 800 ports on Express Card with Windows 7 for simultaneous viewing of camcorder capture
I am trying to set up two firewire camcorders to record two seperate videos, at the same time, using a FireWire 800 Express card. I have been told the reason this does not work is because of Windows and Active X issues, rather than an issue with the software. The limitation has been described as follows: "Some FireWire cards have more than one port. However, if you plug more than one camera into a single FireWire card, you will only get the feed from one camera, if that. This is because the camcorders set teh FireWire bus to 100 Mbps, yet each camcorder requires more than 50 Mbps of bandwidth. The camcorders set the FireWire bus to 100 Mbps even though the default speed of most FireWire buses is 400 Mbps (or 800 in the case of the 1394B). This is a hardware limitation, confirmed with Microsoft, not a problem specific to the software." Has anything changed with this in Windows 7? I am trying run two camcorders, and would love to know if there is any kind of solution. The only way to get a live video feed is by using the FireWire cable. Any information would be appreciated.
February 16th, 2011 7:32pm

That will not work. By the look of it you are using a notebook, not a good choice for video editing. To work with video you will need to import the video to the hard disk and then with your favorite video editor you can edit as needed to create the final film that you can burn to DVD or D5 or whatever you are into. My MVP is for Windows XP, Vista and Windows 7 IT, and I am getting increasingly good with Visual Studio. Developer | Windows IT | Chess | Economics | Hardcore Games | Vegan Advocate | PC Reviews
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February 16th, 2011 7:36pm

For what we do, we need the live feed, and you can get pretty good quality from a built in FireWire Port and using ONE of the ports on an Express Card. I was just wondering if there was a way to do it so that you could utilize the second port. We have to have our laptops and desktop computers built with the appropriate number of ports, and right now the limitation is two total for the notebook computer. Our clients need the live feedback and having it record and save into our files (as .avi files) for the quality needed. The .avi file doesn't compress as much as an mp3 or mp4 file. Wish there was something out there that would fix this, or USB 3.0 work with it!Pat Bennett
February 16th, 2011 7:41pm

Those add-ins cards are not very powerful. If you need live feeds, use PCI Express cards which are far faster. Notebooks do not have that kind of bandwidth like a modern PC has. USB3 is early in the cycle, but it will gain ground once better chipsets surface. My MVP is for Windows XP, Vista and Windows 7 IT, and I am getting increasingly good with Visual Studio. Developer | Windows IT | Chess | Economics | Hardcore Games | Vegan Advocate | PC Reviews
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February 16th, 2011 7:56pm

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