From owner-freebsd-multimedia@FreeBSD.ORG Fri Oct 12 07:36:14 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 A528A16A41A for ; Fri, 12 Oct 2007 07:36:14 +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 0DBB613C45D for ; Fri, 12 Oct 2007 07:36:13 +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 l9C7a4Kx056567; Fri, 12 Oct 2007 10:36:04 +0300 (EEST) (envelope-from achill@matrix.gatewaynet.com) Received: by smadev.internal.net (8.13.6/8.13.6/Submit) id l9C7ZxkN056566; Fri, 12 Oct 2007 10:35:59 +0300 (EEST) (envelope-from achill@matrix.gatewaynet.com) From: Achilleas Mantzios Organization: Dynacom Tankers Mgmt To: Mark Tinguely Date: Fri, 12 Oct 2007 10:35:58 +0300 User-Agent: KMail/1.9.3 References: <200710111316.l9BDG2LZ093155@casselton.net> In-Reply-To: <200710111316.l9BDG2LZ093155@casselton.net> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Message-Id: <200710121035.58934.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, 12 Oct 2007 07:36:14 -0000 =CE=A3=CF=84=CE=B9=CF=82 =CE=A0=CE=AD=CE=BC=CF=80=CF=84=CE=B7 11 =CE=9F=CE= =BA=CF=84=CF=8E=CE=B2=CF=81=CE=B9=CE=BF=CF=82 2007 16:16, =CE=BF/=CE=B7 Mar= k Tinguely =CE=AD=CE=B3=CF=81=CE=B1=CF=88=CE=B5: > > Just a question, in context with our previous discussions. > > I managed to capture video from more than 1 camera, in zoneminder. > > I'd like to ask, whats the theoritical max fps for each of 4 cameras > > using the bktr driver in its FreeBSD-6.2 state? > > In my code, with METEOR_CAP_CONTINOUS (single camera) it can do > > > > (as ZM reports) 25 fps (which AFAIK is good), whereas with all 4 camer= as > > and by using METEOR_CAP_SINGLE, the fps drop down to 2.5 fps/camera. > > You are getting 25fps (PAL/SECAM?) with free-running captures, and 10 fps > when your capture switches and single captures. That sounds about right. > I don't know the input switching speed. Also, the video inputs of the > different cameras are not going to aligned to each other and also not > aligned to the program that calls the METEOR_CAP_SINGLE. I would expect > that every capture will have to wait for the start of a new video frame. I tried yesterday with the "official" slax based linux live CD that=20 LinuxMediaLabs provides, and i got worse results. I got about total 8 fps (PAL) with all 4 inputs active. As a result, i got even worse image quality than with the FreeBSD/bktr code. Amazing! > > --Mark. =2D-=20 Achilleas Mantzios