[linux-usb-devel] Two USB cameras
Has anyone tried viewing two cameras at the same time on Linux? I have two OV511 cameras connected to each of the usb ports and they load fine onto /dev/video0 and /dev/video1 but I cannot view both of them at the same time? I've tried xawtv and gqcam Derek ___ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
Re: [linux-usb-devel] Two USB cameras
On Fri, 19 Apr 2002, Derek Cassidy wrote: Has anyone tried viewing two cameras at the same time on Linux? I have two OV511 cameras connected to each of the usb ports and they load fine onto /dev/video0 and /dev/video1 but I cannot view both of them at the same time? I've tried xawtv and gqcam Unless you really have two controllers, the bandwidth is insufficient. Regards Oliver ___ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
Re: [linux-usb-devel] Two USB cameras
With the 3com homeconnect driver I've written I have a user reporting that he is using 8 cameras simultaneously. Of course he is only grabbing one image from each every few seconds. He has recently switched over to using camserv (http://www.sourceforge.net/projects/cserv) which allows an automated script to pick up single frames and archive them but someone with a web browser can get a streaming feed. (it's being used for a NOC security system apparently) So, yeah. Works fine. As others have said though it's fairly difficult to stream from two cameras simultaneously because image acquisition takes up too much of USB's bandwidth. On Friday 19 April 2002 06:28 am, Derek Cassidy wrote: Has anyone tried viewing two cameras at the same time on Linux? I have two OV511 cameras connected to each of the usb ports and they load fine onto /dev/video0 and /dev/video1 but I cannot view both of them at the same time? I've tried xawtv and gqcam Derek ___ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
Re: [linux-usb-devel] Two USB cameras
I used camserv and with the new version of Mozilla, it was unable to accept the streaming output. Try version 4.+ for testing streaming webcam . Dwaine. Joe Burks [EMAIL PROTECTED]@lists.sourceforge.net on 04/19/2002 03:43:22 PM Please respond to [EMAIL PROTECTED] Sent by: [EMAIL PROTECTED] To: Derek Cassidy [EMAIL PROTECTED], [EMAIL PROTECTED], [EMAIL PROTECTED] cc: Subject: Re: [linux-usb-devel] Two USB cameras With the 3com homeconnect driver I've written I have a user reporting that he is using 8 cameras simultaneously. Of course he is only grabbing one image from each every few seconds. He has recently switched over to using camserv (http://www.sourceforge.net/projects/cserv) which allows an automated script to pick up single frames and archive them but someone with a web browser can get a streaming feed. (it's being used for a NOC security system apparently) So, yeah. Works fine. As others have said though it's fairly difficult to stream from two cameras simultaneously because image acquisition takes up too much of USB's bandwidth. On Friday 19 April 2002 06:28 am, Derek Cassidy wrote: Has anyone tried viewing two cameras at the same time on Linux? I have two OV511 cameras connected to each of the usb ports and they load fine onto /dev/video0 and /dev/video1 but I cannot view both of them at the same time? I've tried xawtv and gqcam Derek ___ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel __ The information in this e-mail is intended solely for the addressee(s) named, and is confidential. Any other distribution, disclosure or copying is strictly prohibited. If you have received this communication in error, please reply by e-mail to the sender and delete or destroy all copies of this message. Les renseignements contenus dans le présent message électronique sont confidentiels et concernent exclusivement le(s) destinataire(s) désigné(s). Il est strictement interdit de distribuer ou de copier ce message. Si vous avez reçu ce message par erreur, veuillez répondre par courriel à l'expéditeur et effacer ou détruire toutes les copies du présent message. ___ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
Re: [linux-usb-devel] Two USB cameras
Derek Cassidy wrote: Has anyone tried viewing two cameras at the same time on Linux? I have two OV511 cameras connected to each of the usb ports and they load fine onto /dev/video0 and /dev/video1 but I cannot view both of them at the same time? With the ov511 driver, you can use the cams module parameter to limit the bandwidth of each camera. For example, modprobe ov511 cams=2 will let you use two cameras on the same bus. I've used up to four cameras at the same time with no problems. -- Mark McClelland [EMAIL PROTECTED] ___ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
Re: [linux-usb-devel] Two USB cameras
Also worth mentioning is the multiple busses fix. One USB camera per bus. You can buy inexpensive PCI cards to add another USB bus. I've seen cards with up to four busses; all the USB 2.0 cards come with at least two suitable for today's webcams. (Plus one really fast one ... :). Also a lot of newer motherboards come with two or three (or more :) USB 1.1 busses on them, so the trick is to find out which ports go on which busses. Even if you only have two ATX-standard USB ports, they might go to different busses. - Dave ___ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
