Date: Tue, 17 May 2016 12:49:16 -0700 From: Mehmet Erol Sanliturk <m.e.sanliturk@gmail.com> To: Polytropon <freebsd@edvax.de> Cc: Eduardo Morras <emorrasg@yahoo.es>, Eduardo Morras via freebsd-questions <freebsd-questions@freebsd.org> Subject: Re: Recording from multiple webcams Message-ID: <CAOgwaMtS-Qbkb0S%2BEB%2BFgjq1WPw92NErgL4o9szVLDHJEkz6SA@mail.gmail.com> In-Reply-To: <20160517191717.e873d96f.freebsd@edvax.de> References: <20160517190459.061ddf66a15df9b686b0d87d@yahoo.es> <20160517191717.e873d96f.freebsd@edvax.de>
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On Tue, May 17, 2016 at 10:17 AM, Polytropon <freebsd@edvax.de> wrote: > On Tue, 17 May 2016 19:04:59 +0200, Eduardo Morras via freebsd-questions > wrote: > > Can I record video from multiple webcams? I need record from 3 webcams > > simultaneusly, I've install webcamd but can't find any app to record > > from them. Some apps allow 1 webcam but I need at least 3. > > Not tested (because I don't have even one webcam here), but would > mencoder be an option for you? Many years ago, I've been using a > computer with two Haupauge TV/video cards and accessed their video > inputs independently by accessing /dev/bktr0 with one mencoder, > and /dev/bktr1 with the other... not sure if mencoder could do > the same with webcams controlled by webcamd... > > > -- > Polytropon > Magdeburg, Germany > Happy FreeBSD user since 4.0 > Andra moi ennepe, Mousa, ... > _______________________________________________ > > I do not have MEncoder : https://en.wikipedia.org/wiki/MEncoder ( http://www.mplayerhq.hu/ ) ( http://www.mplayerhq.hu/DOCS/HTML/en/index.html ) >From documentation , it seems that MEncoder can encode from TV , Radio , but I could not see web camera . Perhaps , it may encode from multiple network cameras ( see Section 3.4 : http://www.mplayerhq.hu/DOCS/HTML/en/streaming.html ) because each camera will have its own IP/address . I do not have a working FreeBSD . I tried in Fedora 20 x86_64 KDE ( Assume you have a KDE in your FreeBSD ) . I have attached two web cameras . I have started Cheese . It attached to one of the cameras . I have started Camorama . It attached to another of the cameras . A second copy of Cheese did not start . A second copy of Camorama did not start ( gave an error that "Could not connect to /dev/video0" ) . I have started UCView . It connected to /dev/video1 , but it did not show any image . Conclusions : No one of the programs has any menu item to select a web camera device to connect . No one of the programs are able to work in multiple copies . There are open source other programs you may try compile and run in multiple copies , but most of them are working with common libraries . Therefore you need to make modifications to these programs to allow them to connect to different web cameras , either from one program or from different programs . My knowledge is so much . Mehmet Erol Sanliturk
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