Thanks a lot Wouter, it is useful information for me, now i have to read the docs, wikis, forums and project pages relationed with DVSwitch and IceCast.
I had the idea that the "spread" of the equipment consist in many cameras connected to a device like "video mixer" and this connected to a "video/storage server" computer and another computer for internet streaming, some like the videoconference systems cameras and wireless mics connected to mixers, the mixers connected to a VC-Codec and the codec to an internet dedicated link. Well, i will search information and testing Thanks again 2011/7/30 Wouter Verhelst <[email protected]> > On Fri, Jul 29, 2011 at 07:30:21PM -0500, Edgar Aquino wrote: > > which software is used for stream the DebConf11? > > if is freely/libremente available, i want to test it local and may be use > it > > for educational purposes in the web. > > The debconf-video software stack consists of two main components: > dvswitch, and icecast. > > DVswitch is an application that can be used to take a DV stream from a > video camera (as produced by some consumer video cameras over FireWire), > and with which one can select which camera stream to send to the output > stream 'live', i.e., without post-processing. For more information, see > <http://dvswitch.alioth.debian.org>. DVswitch can produce a stream for > recording (with 'dvsink-files') and one for streaming (with > 'dvsink-command') at the same time, so the video that is streamed live > over the Internet is recorded for future reference at the same time. > > What happens with the stream that goes over the Internet is totally out > of scope for DVswitch. We use icecast with ffmpeg2theora to encode, but > it is perfectly possible to use something else, provided the software > you use has a helper application that will accept a DV stream on > standard input, transcode it, and send it off to the streaming server. > > > What kind of requirements are needed? [machine, server, client, kind of > > cameras, storage, connection speed...] > > For the DVswitch machine, you need a fairly powerful machine, since it > needs to decode several DV streams in parallel, and may have some > additional computational requirements if you want to use some of the > effects that DVswitch supports (like picture-in-picture, or fade > transitions in the newest development release). In my experience, any > 2Ghz or better machine will suffice, however it may be possible that > slightly slower machines will work too; you may have to experiment > there. > > It is recommended that you do not transcode the stream on the DVswitch > machine, since that will take away precious computing time. The machine > doing the transcoding will also require a somewhat powerful processor. > How powerful exactly depends on the codecs you wish to use. > > If you wish to use more than two or three cameras and also wish to do > live streaming, you need a gigabit network; DV streams take about > 25-30Mbit/s of data, so will clog your network if you use more than 3 > streams over a 100Mbit network (and up to the transcoder, the output > stream is also a DV stream). > > You will need cameras that produce a DV stream. Any camera with a DV > tape deck and firewire output can do this. For each camera, you will > also need a computer or laptop with firewire port. Note that these > laptops can be rather slow, provided they have a gigabit port; the > processor requirements on the dvsource laptops are very low. It is safe > to use the laptop on which dvswitch runs as one to which you connect a > camera. > > For storage, you'll need about 13GB per recorded hour. > > > **Sorry if my english is wrong, i'm not very skilled on writting..... > > That's okay, it's better than my spanish :-) > > Hope this helps, > > -- > The volume of a pizza of thickness a and radius z can be described by > the following formula: > > pi zz a >
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