From owner-freebsd-multimedia@FreeBSD.ORG Fri Oct 5 09:43:51 2007 Return-Path: Delivered-To: freebsd-multimedia@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id AD95E16A419 for ; Fri, 5 Oct 2007 09:43:51 +0000 (UTC) (envelope-from achill@matrix.gatewaynet.com) Received: from smadev.internal.net (host3.dynacom.ondsl.gr [62.103.35.211]) by mx1.freebsd.org (Postfix) with ESMTP id C987713C4A7 for ; Fri, 5 Oct 2007 09:43:50 +0000 (UTC) (envelope-from achill@matrix.gatewaynet.com) Received: from smadev.internal.net (localhost [127.0.0.1]) by smadev.internal.net (8.13.6/8.13.6) with ESMTP id l959hiUd012673; Fri, 5 Oct 2007 12:43:44 +0300 (EEST) (envelope-from achill@matrix.gatewaynet.com) Received: from localhost (localhost [[UNIX: localhost]]) by smadev.internal.net (8.13.6/8.13.6/Submit) id l959hdQN012672; Fri, 5 Oct 2007 12:43:39 +0300 (EEST) (envelope-from achill@matrix.gatewaynet.com) From: Achilleas Mantzios Organization: Dynacom Tankers Mgmt To: Mark Tinguely Date: Fri, 5 Oct 2007 12:43:39 +0300 User-Agent: KMail/1.9.3 References: <200710041537.l94Fb18v065589@casselton.net> In-Reply-To: <200710041537.l94Fb18v065589@casselton.net> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Message-Id: <200710051243.39554.achill@matrix.gatewaynet.com> Cc: freebsd-multimedia@freebsd.org Subject: Re: Zoneminder and multichannel cards X-BeenThere: freebsd-multimedia@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Multimedia discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 05 Oct 2007 09:43:51 -0000 =CE=A3=CF=84=CE=B9=CF=82 =CE=A0=CE=AD=CE=BC=CF=80=CF=84=CE=B7 04 =CE=9F=CE= =BA=CF=84=CF=8E=CE=B2=CF=81=CE=B9=CE=BF=CF=82 2007 18:37, =CE=BF/=CE=B7 Mar= k Tinguely =CE=AD=CE=B3=CF=81=CE=B1=CF=88=CE=B5: > > I have successfully (and painfully!) managed to get correct quality > > video out of ZoneMinder zoneminder-1.22.3, on 6.2-RELEASE-p4 with the > > LMLBT4M card. (card info on > > http://www.linuxmedialabs.com/product_details.php?prodid=3D320). > > > > However i cant instantiate a second instance of the video capture daem= on > > of zoneminder (zmc), because of a "/dev/bktr0: Device busy" error. > > > > Is it possible to open /dev/bktr0 from two programms at the same time? > > No, the bktr(4) driver is written so that only one open is active at a > time. I dont know if you are familiar with zoneminder, it has a capture daemon (zmc) which is used to grab the video. In the installation we have at work under linux, using a 4-chip board=20 (LMLBT44), i can see that there are only 4 instances of it (zmc) running=20 on /dev/video0,/dev/video1,/dev/video2,/dev/video3 to capture all 8 cameras. This board supports 4 full rate inputs, or 8 multiplexed inputs. So for each one of the 4 chips, the corresponding zmc daemon is used to simultaneously capture both channels (cameras) of the same chip. Theoritically is that possible with FreeBSD's bktr driver? Could we have an app like lets say xawtv to display all (4 in my case)=20 channels of a multiplexer board like LMLBT4M which utilizes only one 878 ch= ip=20 and supports 4 multiplexed channels i.e. 4 cameras? If your answer is yes, then i should keep on trying with=20 =46reeBSD/ZoneMinder/zmc, etc... Else i should buy 3 additional bt 878 cards, or switch to linux which i wan= t=20 to avoid! Thanx for any info. > > --Mark Tinguely. =2D-=20 Achilleas Mantzios