On 11/14/2013 09:27 AM, Jean-Michel Pouré - GOOZE wrote: > Le jeudi 14 novembre 2013 à 08:22 -0800, Kirk Wallace a écrit : >> >> On the cards I have played with, the multiple inputs are actually >> multiplexed into a single channel so may limit the frame rate per >> input >> or have other effects. >> www.linuxsoft.cz/img/digi3/bt878_specs_sheet.pdf > > Thanks! This is what I suspected. > I renamed subject to avoid confusion with current discussion. > > What about this card: > Connexant 878a - 4 x Chip > http://www.camsecure.co.uk/CamsecureBT878aPCICard.html > £54.98 is not bad if this is a real 4-way card. > > Do you think that we are getting 4 real inputs at normal frame rate? > > Kind regards, > Jean-Michel > ... snip
It looks like this card has a chip for each channel, so is like having four separate video capture cards. It says that the overall frame rate is 120 frames pre second and 30 fps with four active channels. This makes me think the PCI interface is the limiting factor. Four separate cards may be faster. 30 fps should be fine for a security application, but may or may not be good for machine vision. This card also has BNC connectors rather than the more common RCA. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/ ------------------------------------------------------------------------------ DreamFactory - Open Source REST & JSON Services for HTML5 & Native Apps OAuth, Users, Roles, SQL, NoSQL, BLOB Storage and External API Access Free app hosting. Or install the open source package on any LAMP server. Sign up and see examples for AngularJS, jQuery, Sencha Touch and Native! http://pubads.g.doubleclick.net/gampad/clk?id=63469471&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
