Hi, Just to chime in. One of the particularly nice things about using a dedicated hardware encoder for incoming video streams is that the presentation stream (hdmi/vga/etc.) could then have more access to the CPU for encoding. Really nice when you want to squeak more frames out of it at a higher bitrate.
The H.264 compression cards are pretty reasonably priced, I think we pay $150 for the non hardware encoding cards right now. And that's for a card that only does one port at 30 fps, and each additional feed would drop the fps in half. That BC-H04120A can do 30 fps simultaneously on all ports. Network streaming would be great for finishing off confidence monitoring. A feature lacking in Matterhorn (though some is coming up in 1.3) in part because of the need to encode multiple streams... Chris On Tue, 11 Oct 2011 15:40:02 -0500 Curtis Hall <[email protected]> wrote: > Hi, > > I'm Curtis with Bluecherry. We provide software compression cards > that some Opencast members are using (PV-143, PV-149, PV-981 etc). > We also produce H.264 hardware compression cards which does the > compression on the card itself. We also provide a Video4Linux2 > driver for these cards ( https://github.com/bluecherrydvr/solo6x10). > > I've talked to Chris Brooks a couple times about these cards and I've > gained some decent information on how these cards can benefit the > Opencast application by compressing the video on the cards instead of > on the processor. I've attached a couple emails between Chris and our > developers about what the gstreamer plugin would need to support. > > My question comes down to the amount of people that would potentially > be interested in these cards. We would incur a expense in hiring a > contractor to complete the gstreamer plugin, so I'm doing the math to > see if it would be cost effective for us to start on the gstreamer > plugin. > > The following cards are available: > > BC-H04120A PCIe ($219.95) - 4 port > BC-H04120A Mini-PCI ($199.95) - 4 port > BC-H16480A PCIe ($299.95 - 16 port > > http://store.bluecherry.net/search.php?search_query=bc-h&button.x=0&button.y=0&button=Submit > > Thanks! > > -- Christopher Brooks, BSc, MSc ARIES Laboratory, University of Saskatchewan Web: http://www.cs.usask.ca/~cab938 Phone: 1.306.966.1442 Mail: Advanced Research in Intelligent Educational Systems Laboratory Department of Computer Science University of Saskatchewan 176 Thorvaldson Building 110 Science Place Saskatoon, SK S7N 5C9 _______________________________________________ Matterhorn-users mailing list [email protected] http://lists.opencastproject.org/mailman/listinfo/matterhorn-users
