Serguei Miridonov wrote: > > "Bryan K." wrote: > > > Hey everyone > > > > It's been awhile. Anyhow, I'm looking to do some serious video work with a > > linux box. This is what I need: > > > > * 4 - 8 video inputs > > * Ability to record each input at 640x480 (or higher) individually in 24 - > > 48 hour intervals > > If you need to record from 4-8 inputs continuously, you will need 4-8 > separate TV capture cards, I believe. However, if you wish just to take > snapshots (say, 1-2 per second from all inputs), may be you can do it with > DC10plus card which can be programmed to take signals from 4 composite inputs > right of the box (however, you will need to add this functionality to the > driver, and make S-Video cable for 2 composite inputs instead of Y/C). I don't think you would need to change the driver, if it has the VIDIOSCHAN ioctl implemented you should be able to use this for switching between the inputs. > > > So, can someone tell me what I should be looking for, what is the > > likleyhood of getting this to work etc? Also, does anyone have a source of > > good video capture boards, fairly standard, maybe some with 2-4 inputs? > > Almost all have both composite and S-Video inputs. Some cards can be > programmed so that S-Video input becomes two composite. Some cards, like > DC10plus, have internal composite connector besides those ones on rear metal > plate. So, in particular DC10plus can be used as 4-inputs card. If you have > good soldering skills, may be you can get all available 6 composite inputs > from it ;-). > Virtualy unlimeted inputs could achieved by using frequency multiplexing, in other words play for cable company and modulate each video source on a single cable (simple video modulators and some technical knowledge will do) and use VIDIOCSFREQ for switching. Jeroen
