Hey Nils, Of course I was not taking that into account, but I took for granted it wouldn't be an issue, since so far we have been using arguments regarding money, and not other regulatory concerns.
So I guess I stand with an "if" there are not restrictions as to install some wiring to allow plugging recording equipment more easily, then that would be definitely my first choice. "If" a pre-installation is not possible, then those alternatives are something to consider, of course. Best regards 2012/4/2 Nils Birnbaum <[email protected]> > Hey Rubén, > in my experience in the eight years of bringing recording equipment into > class- and other rooms of a university, there are things that are more > important than money. For example restrictions for structural alteration, > fire regulations or somtimes that the room isn't owned by th University. > Monument conservation, always a nice arguments against all kinds of new > wires, especialy in combination with fire regulations. These are only some > examples. So there are many more reasons to spend money for special > solutions. > > I like the idea of mobile solutions, build one for virtPresenter which > runs very good under the given conditions. So I'm very instrested to see > what's comming next in this area. > > Nils > > > Hello Steve, > > > > I'm sorry about my English, it's normal you don't understand that > > sentences > > because it doesn't say what I meant (I thought it did, at the time). To > > put > > it short, my point was that I didn't see why spending so much in a single > > component when a whole classroom could be equipped with not much more > > money. > > > > However, now that you explained your case a little more (thanks about > > that, > > btw!), I'd definitely go for semi-permanent installation in the > > classrooms. > > I mean, having the necessary wiring conveniently installed in the > > classrooms, so that recording a classroom would only be plugging the > > recorder on one side, a camera on the other side, and start recording. > > This > > was what I meant here: > > > > As an alternative, you could think of having a pre-installation for audio > >> and video, so that all the cables are installed and conveniently > >> "hidden" > >> from the public, and you'd only have to plug the VGA, audio, etc. from > >> some > >> panel next to the teacher's desk. But, again, it depends largely on what > >> is > >> your intended setup, if there are fixed cameras in each classroom, etc. > > > > > > For instance, in most classrooms in UVigo there is a multimedia > projector. > > The cable to the projector is passed through the ceiling and walls to the > > teachers desk, so they only have to plug an VGA cable lying next to their > > desk to their computer, and they can start their slideshow or whatever. > > You > > could have the same with a camera but, instead of having a permanent > > camera > > in every classroom, you could have simply the cable and a connector panel > > in both ends. If you use HD webcams, as we do, then the price of them is > > low enough to consider having one for every classroom. Still, I believe > > that this kind of wired installation would be cheaper than the wireless > > alternatives, and at the same time more robust and with a better > > performance. > > > > Finally, I do think that having a working CA in a laptop is possible, > > though its main problem is the "confidence monitoring", which is getting > > fixed in this and upcoming versions. As regards to Galicaster, it may > > certainly run in a laptop, though it's more difficult to add periferals > > (such as capture cards) to them (this problem affecting also the official > > CA and any laptop-based solution, of course). > > > > Best regards > > Rubén > > > > 2012/4/2 Stephen Spencer <[email protected]> > > > >> Thank you for your synopsis Mike. > >> > >> Steve > >> > >> -----Original Message----- > >> From: [email protected] [mailto: > >> [email protected]] On Behalf Of Michael D. Walker > >> Sent: 30 March 2012 17:13 > >> To: Opencast Community > >> Subject: Re: [Opencast] Teradek Cube > >> > >> The Teradek Cube is a good portable encoder. $1500 is inexpensive when > >> compared with Vbrick and Haivision appliances. That also compares well > >> against a high end capture card loaded in a PC or Mac Pro. You may want > >> wireless, but they also have wired. > >> You can spend a lot more on the camcorder, mics, and mixer. > >> > >> It's a portable solution for a camera/webcast team, not to install in > >> every classroom, but it's not really a DL solution. > >> > >> Mike > >> > >> On 3/30/2012 2:25 AM, Stephen Spencer wrote: > >> > Hi Ruben, > >> > > >> > Thanks for your reply, I appreciate that your willing to hear my > >> thoughts on our ideal setup. Basically what we hope to end up with is a > >> portable ca that is as light weight and unobtrusive as possible, which > >> we > >> can setup before a lecture starts. > >> > > >> > It's worth noting that we are a relatively small institution and don't > >> intend to be turning around 100's or 1000's of hours of video every > >> year. > >> As a result when I said we have a low budget what I mean is that we > >> can't > >> afford to kit out all of our teaching areas with static installations > >> for > >> something that probably won't be in constant use. It's likely that > >> certain > >> lecturers will want to be involved and want all of their modules to be > >> recorded. This causes us a problem because the way our timetabling > >> system > >> works means we can't guarantee that they will be in the same teaching > >> space > >> from day to day (hence the portable requirement). > >> > > >> > Something that we would like to avoid happening is having trailing > >> cables running through the classroom which is one of the reasons for > >> thinking about using these cubes. The other reason is that they will > >> take > >> care of any transcoding of the video feeds, reducing the spec required > >> for > >> pc element of the capture agent. We plan to capture audio via > >> Seennheiser > >> ew 100-NEG radio mics which we already possess and the teaching pc > >> through > >> vga/dvi to hdmi converters connected to a cube broadcasting an rtp or > >> udp > >> stream back to the ca. I am also leaning towards using Gallicaster over > >> the > >> standard MCD spec. > >> > > >> > I do realise the these devices are fairly expensive at $1490 a go but > >> I > >> have to admit I'm having difficulty understanding your cost break down. > >> You > >> said in your message that Vigo are spending around €3000 per capture > >> agent > >> and later on "And still, all this stuff is roughly half as much the cost > >> of > >> a single Cube". A lot of this equipment we already possess so we don't > >> need > >> to start purchasing everything from scratch. > >> > > >> > Another thing to keep an eye on is whether or not using a cube will > >> become redundant in about a year. I say this because in the 3rd quarter > >> of > >> last year the first wireless hd cameras were released but only to the > >> south > >> korean market, so I would expect to be seeing them in European/American > >> market quite soon. > >> > > >> > If you have any better ideas that might fit our requirements I would > >> be > >> very grateful to hear them because we are new to Matterhorn and do > >> appreciate comments/advice from seasoned users. > >> > > >> > Best Regards > >> > Steve > >> > > >> > -----Original Message----- > >> > From: [email protected] > >> > [mailto:[email protected]] On Behalf Of Rubén > >> > Pérez > >> > Sent: 29 March 2012 21:47 > >> > To: Opencast Community > >> > Subject: Re: [Opencast] Teradek Cube > >> > > >> > Hello, > >> > > >> > Steve, I would really like to know what you have in mind, because I > >> > confess I don't understand all the details. You're saying that you > >> > have a low budget for equipment and thus you don't want to set up a > >> > fixed installation in the classrooms, but at the same time you are > >> > willing to spend almost > >> > $2000 in a single transceiver. > >> > > >> > I'm guessing that you'll still need a camera and a computer to send > >> the > >> video stream to. You still need to connect the teacher's pc to get the > >> VGA > >> feed, which I don't know how you want to accomplish, and also how you're > >> going to get the audio feed. Are you installing cameras in every > >> classroom, > >> or are you using a mobile camera, too? What about the audio set up? > >> > > >> > I can tell you that we are spending ca. €3000 in Vigo to equip one > >> classroom, and even though this is a high figure, it includes: > >> > > >> > - An i7-based computer, with 8GB of RAM and 512GB of HD in a > >> RAID-1, > >> for > >> > redundancy > >> > - Please note that this computer is highly over-sized for a > >> simple > >> > capture unit, but we are using this computers at night as > >> Matterhorn > >> > workers. We could easily use much cheaper i3 computers if we > >> were > >> to use > >> > them as capturers only. > >> > - The Epiphan VGA2PCI framegrabber > >> > - An HD Logitech c910 webcam > >> > - A Behringer sound board > >> > - A wearable Revolabs Solo microphone > >> > - A set of two fixed stereo microphones, to work as backup > >> > - An audio gate to control the microphone gain > >> > - A tactile screen > >> > - A VGA splitter > >> > - All the cables and adapters needed for the installation > >> > > >> > All that installed in the classroom in a non-obstructive way and ready > >> to use. > >> > > >> > You can see that we are not installing the cheapest equipment and that > >> we could do with less (less powerful computers, no microphone array at > >> all, > >> cheaper frame grabber and/or microphones...), so the price could be much > >> lower than that. The screen is required because we use Galicaster as our > >> reference capture agent, but you could spare the screen if you are using > >> the official Matterhorn Capture Agents. And still, all this stuff is > >> roughly half as much the cost of a single Cube. > >> > > >> > As an alternative, you could think of having a pre-installation for > >> audio and video, so that all the cables are installed and conveniently > >> "hidden" > >> > from the public, and you'd only have to plug the VGA, audio, etc. from > >> some panel next to the teacher's desk. But, again, it depends largely on > >> what is your intended setup, if there are fixed cameras in each > >> classroom, > >> etc. > >> > > >> > Re. the Galicaster, I'd like to say: > >> > > >> > 1. Olav, thanks for testing and using it. Making something useful > >> for > >> > ourselves, but also for others, was our final goal, and seeing > >> people > >> is > >> > happy with it makes us proud. > >> > 2. You *can* manage Galicaster remotely via VNC. We currently > >> manage > >> all > >> > our Galicaster equipments in such a way. Configuring Ubuntu for > >> providing a > >> > VNC signal without a physical screen attached may be a bit tricky, > >> though, > >> > but it can be done and it works perfectly. > >> > 3. That RTP feature seems very interesting. If you want to share > >> your > >> > developments or concerns regarding that, we are more than happy to > >> hear > >> > them and even contribute to get those functionality on board! There > >> is a > >> > mail list for Galicaster users [1] and you are welcome to subscribe > >> and > >> > share your experiences. > >> > > >> > > >> > I'm willing to hear Stephen's comments on their "ideal" setup, because > >> this kind of discussions are good for adopters to make better decisions > >> re. > >> > their classroom equipment. > >> > > >> > Best regards > >> > Rubén > >> > > >> > 2012/3/27 Olav Bringedal <[email protected]> > >> > > >> >> On 2012-03-22 16:47, Dr Leslaw Zieleznik wrote: > >> >> > >> >>> Steve, > >> >>> > >> >>> This is an interesting concept, but: > >> >>> > >> >>> 1. in my opinion the cost just for the transmitter is quite high > >> >>> ($1690-$1990) > >> >>> 2. you still need to run some wire between the camera/microphone and > >> >>> the device 3. the question is where you will keep your recordings? > >> >>> on the decoder/receiver which will add another $1600-$1900 to the > >> >>> cost 4. will you have access to recordings on the receiver, such > >> >>> that in a case of lost connection with the core (or missed > >> >>> transmission) this can be recovered. > >> >>> > >> >>> > >> >> I think this might be an interesting product for capturing a screen > >> >> together with an IP-camera. We UiB have looked into solutions where > >> >> we can depend less on a stationary PC in the class room, and rather > >> >> have a virtualised agent. > >> >> > >> >> We have seen that the Galicaster agent is much easier to configure > >> >> for rtp streams than the native MH agent. We are currently working > >> >> with two > >> >> scenarios: > >> >> > >> >> 1: have a device (either epiphan vgabroadcaster or the epiphan MCD) > >> >> capture the screen and stream it to rtp. It is here the Tcube can be > >> >> a replacement. An ip-camera does the same. Then a galicaster agent > >> >> takes these streams as an agent. The drawback here is that the output > >> >> for the galicaster is native, and without a pc in the room, no > >> >> feedback is provided for the lecturer. If galicaster had a web > >> >> interface we would probably go for that right away. > >> >> > >> >> 2. Get the MCD to work and accept the (less than optimal) quality of > >> >> the s-video input. We see that the firmware on the MCD is also quite > >> >> buggy, and are very unsure if it is production worthy. > >> >> > >> >> > >> >> In my only few months experience with the MH system, the best > >> >> solution is > >> >>> to have an autonomous capture device, permanently placed in the > >> >>> lecture room. > >> >>> And so in the case of any problem, recordings can always be uploaded > >> >>> at any time 'by hand' to the core. > >> >>> > >> >>> You would probably be better of if you design a laptop based capture > >> >>> device, but then there is unavoidable hazard when moving laptop > >> >>> around and making every single time connections to the network and > >> >>> to video/audio devices. > >> >>> We did use such idea in the past with MiniMac based Podcast Capture > >> >>> portable device, which we found very unpractical. > >> >>> > >> >>> Anyway, an interesting concept and I wonder what other peoples will > >> say? > >> >>> > >> >>> Best, > >> >>> Leslaw > >> >>> > >> >>> > >> >> -- > >> >> > >> >> Olav Bringedal > >> >> > >> >> Seksjon for integrasjon og applikasjonsutvikling IT-Avdelingen UIB > >> >> > >> >> ______________________________**_________________ > >> >> Community mailing list > >> >> [email protected] > >> >> http://lists.opencastproject. > **org/mailman/listinfo/community<http:// > >> >> l ists.opencastproject.org/mailman/listinfo/community> > >> >> > >> >> > >> >> To unsubscribe please email > >> >> community-unsubscribe@**opencastproject.org > <community-unsubscribe@ope > >> >> n castproject.org> ______________________________**_________________ > >> >> > >> > _______________________________________________ > >> > Community mailing list > >> > [email protected] > >> > http://lists.opencastproject.org/mailman/listinfo/community > >> > > >> > > >> > To unsubscribe please email > >> > [email protected] > >> > _______________________________________________ > >> _______________________________________________ > >> Community mailing list > >> [email protected] > >> http://lists.opencastproject.org/mailman/listinfo/community > >> > >> > >> To unsubscribe please email > >> [email protected] > >> _______________________________________________ > >> _______________________________________________ > >> Community mailing list > >> [email protected] > >> http://lists.opencastproject.org/mailman/listinfo/community > >> > >> > >> To unsubscribe please email > >> [email protected] > >> _______________________________________________ > >> > > _______________________________________________ > > Community mailing list > > [email protected] > > http://lists.opencastproject.org/mailman/listinfo/community > > > > > > To unsubscribe please email > > [email protected] > > _______________________________________________ > > _______________________________________________ > Community mailing list > [email protected] > http://lists.opencastproject.org/mailman/listinfo/community > > > To unsubscribe please email > [email protected] > _______________________________________________ >
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