Re: RE:Re: live video switching (was: Linux Tools for Serious Photographers)
IMO kde libs and qt libs aren't an issue. Rui's apps such as QjackCtl already need QT and if you wish to use e.g. K3b, you also have to install kde libs. Regards, Ralf -- Ubuntu-Studio-devel mailing list Ubuntu-Studio-devel@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-devel
Re: RE:Re: live video switching (was: Linux Tools for Serious Photographers)
On Wed, 2012-08-08 at 12:45 -0700, Len Ovens wrote: I think there is a reason it is hard to find software that can do this stuff, not enough people want it or the hardware is just not there yet. I did find a thread where someone was looking for such stuff, the responses were all that it was better to get hardware, that any of the software solutions showed noticeable lag. So computers have gotten faster, but they are still not there yet. There were several threads where coders like Paul Davis gave some comments. The coders say, it's impossible to program this software without a team of many coders that are payed. It already takes a long time to get Ardour that good as it is today, for video software it would take much longer. Ignoring the special video hardware, even for very oldish Apple computers you already get completely professional software. I don't know how much the video hardware is. Regards, Ralf -- Ubuntu-Studio-devel mailing list Ubuntu-Studio-devel@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-devel
RE: RE:Re: live video switching (was: Linux Tools for Serious Photographers)
I was under the impression you were referring to switching PLAYBACK from multiple source files, not from multiple running cameras. Kdenlive can take input from one camera, no idea if it can do multiple cameras, as I've only used that feature for a webcam. I don't own pro cameras, only the $300 kind, as all my activist work is posted under strict no-monetization principles for ethical reasons. Date: Wed, 8 Aug 2012 12:45:53 -0700 From: Len Ovens l...@ovenwerks.net To: Ubuntu Studio Development Technical Discussion ubuntu-studio-devel@lists.ubuntu.com Subject: RE:Re: live video switching (was: Linux Tools for Serious Photographers) Message-ID: 95c0a5ca5c6a54386517b20162b35678.squir...@ssl.ovenwerks.net Content-Type: text/plain;charset=iso-8859-1 clip By live switching I mean having two or more video streams coming in direct from cameras for example and being able to see both streams at the same time as well as the result of the switching (that is at least three live views)... probably four to include at least one stream from the local drive. The resultant video is then output as video that can be broadcast at the same time the incoming video is being made. Bonus if the audio can be mixed on the same machine. or at least added to the stream. Anything less is editing/VJing. clip -- Ubuntu-Studio-devel mailing list Ubuntu-Studio-devel@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-devel
RE:Re: live video switching (was: Linux Tools for Serious Photographers)
On Wed, August 8, 2012 8:03 am, Luke Kuhn wrote: I didn't know LiVES could do anything like that, as it has to import all video files before use. Kdenlive (in repo, and which I use for making If LiVES has to import first, then the feature of taking live streams was just another way to import a video file. That is not what I was talking about. As far as I know, we are not shipping kdenlive this cycle, though it has been made easier to install. I don't get the idea it does live video switching/fading either. By live switching I mean having two or more video streams coming in direct from cameras for example and being able to see both streams at the same time as well as the result of the switching (that is at least three live views)... probably four to include at least one stream from the local drive. The resultant video is then output as video that can be broadcast at the same time the incoming video is being made. Bonus if the audio can be mixed on the same machine. or at least added to the stream. Anything less is editing/VJing. The thing that I am trying to say however, is that I don't think we need to worry about finding an app that does that. That kind of work really can't be done solo. It requires a team of people. A min. of 4 if the switcher can produce as well, but still need two for camera and one for audio. I suppose one could get away with two people if one camera is stationary and the audio is set a little low and there is no need to transition audio streams. In my opinion the result would be sub-standard. Normally, seven people would be used. (even at a place that skimps on _everything_) The only place I see this being used is in a live setting for filling large screens behind or to the side of a stage where it was important to show the performer. We would be getting into specialty work... a very small group of people and a set of apps we probably can't test on any of our HW. (anyone have at least a dual video input card as well as video out?) My machine has trouble giving smooth video from a cheap webcam... and the video out is way lagged behind the input. I think live video work would require getting rid of X and handling the video directly with a video version of jackd. I think there is a reason it is hard to find software that can do this stuff, not enough people want it or the hardware is just not there yet. I did find a thread where someone was looking for such stuff, the responses were all that it was better to get hardware, that any of the software solutions showed noticeable lag. So computers have gotten faster, but they are still not there yet. -- Len Ovens www.OvenWerks.net -- Ubuntu-Studio-devel mailing list Ubuntu-Studio-devel@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-devel
Re: live video switching (was: Linux Tools for Serious Photographers)
On Tue, August 7, 2012 7:13 am, Emmet Hikory wrote: Len Ovens wrote: I don't find SW to handle 3 or more input streams and do on the fly switching. (I think we used closer to 7 or 8 streams... though our switchers had more.. they had access to every stream in the building) Assuming one is either willing to play with *lots* of gstreamer pipelines, or can pre-cache streams in one way or another, freemix can handle this sort of thing: I've stood behind someone using it to select video at a club, and they had multiple streams/previews running locally, switching which was on the main screen regularly. Took a while to find any docs for it... in the doc directory of the src package. freemix is designed to do live showing switching of videos stored as file on the computer like a VJ. I don't know if it can connect to a gstream opened by another app or not. But it is not designed for it. It is only available as a src package right now. However, I tried looking up VJ in synaptic and that spit out LiVES, already in the repos. In it's features page it says Support for live firewire cameras and TV cards. I don't know that we should ship it by default, but extra sw yes. Comments? -- Len Ovens www.OvenWerks.net -- Ubuntu-Studio-devel mailing list Ubuntu-Studio-devel@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-devel
Re: live video switching (was: Linux Tools for Serious Photographers)
On Tue, 2012-08-07 at 15:13 -0700, Len Ovens wrote: Comments? Since Linux suffers of no or no serious NLE video cut, there shouldn't be too much video packages included to an install media. Regarding to soundtracks, resp. audio productions for videos, I would welcome http://rg42.org/wiki/a3vtl as a package. -- Ubuntu-Studio-devel mailing list Ubuntu-Studio-devel@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-devel
Re: live video switching (was: Linux Tools for Serious Photographers)
Regarding to a German post Lives seems not to run with 12.04 and there are packages for Packages are available for the following releases: Ubuntu 10.04: 1.4.6-1~getdeb1 Ubuntu 10.10: 1.4.2-1~getdeb1 Ubuntu 9.04: 1.1.5-1~getdeb1 Ubuntu 9.10: 1.2.1-1~getdeb1 Ubuntu 11.04: 1.4.6-1~getdeb1 at http://www.getdeb.net/app/lives I suspect Cinelerra is uninteresting regarding to IIRC no live streams and of course license issues? -- Ubuntu-Studio-devel mailing list Ubuntu-Studio-devel@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-devel
Re: live video switching (was: Linux Tools for Serious Photographers)
Len Ovens wrote: Took a while to find any docs for it... in the doc directory of the src package. freemix is designed to do live showing switching of videos stored as file on the computer like a VJ. I don't know if it can connect to a gstream opened by another app or not. But it is not designed for it. It is only available as a src package right now. Ah, indeed: the demo I saw must have either used named pipes or been a derivative of the sources currently on launchpad (engine.py would need extension to directly access non-file sources, although it's all gstreamer). Packaging this source is fairly trivial, if it's considered particularly useful: it's a clean setup.py and fairly sensibly licensed. However, I tried looking up VJ in synaptic and that spit out LiVES, already in the repos. In it's features page it says Support for live firewire cameras and TV cards. I don't know that we should ship it by default, but extra sw yes. Unless someone can document a sensible video processing workflow (VJ, broadcasting, etc.) which is known to be well-done with it, I'm not sure it ought get any more or less attention than any of the other audio/video tools in the archive that aren't part of known workflows: while there's *lots* of software in the archive, and all of it is presumably useful and used by some folk, the more that we attempt to call supported (even as extra sw), the less I would expect we could refine the experience to be ideal for accomplishing real tasks. -- Emmet HIKORY -- Ubuntu-Studio-devel mailing list Ubuntu-Studio-devel@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-devel
