hi, when I try to get a signal in Linux from the capture card, it always get the first source (TV). how can I change to composite or s-video?
cheers. On Tue, Apr 27, 2010 at 11:33 PM, <[email protected]> wrote: > On Wed, April 28, 2010 00:43, Snaky Love wrote: >> Hi, >> >> first a BIG THANK YOU for this very promising project! Looks really >> interesting! Please keep up the good work! >> > > Thanks, I will try to. > >> What I want to do: I would like to use my old DV Cams (not HDV) for a >> realtime interview situation. I can not afford a live DV mixer / switch, >> so >> I found LIVES :) >> >> My question: is it possible to mix / switch two dv cams and stream the >> results + write the mix to a file in DV or MPEG2 quality? Has anybody done >> this before? If it is possible, what cpu will this need? (Audio should >> come >> from Cam A always.) >> > > If the cameras have firewire or TV outputs you can mix the two cameras in > LiVES 1.3.2 or higher. Just go to File -> add live input, and add the two > cameras. Right now it only supports video (no audio) so you would have to > look into other methods of capturing audio. If you press the "r" key > before or during playback, you can record the incoming video streams. For > mixing, you can for example press ctrl-8 and select foreground and > background clips as the two cameras. I have managed to do this in realtime > on a 2.GHz AMD64. > > After recording you can then render the recorded frames and encode to dv > or mpeg. > > > > >> Even more: is it possible to do the same as above plus add overlay (text) >> to >> the video before streaming + writing out to a file? >> > > LiVES in realtime mode can only mix two sources, so if you want an overlay > it could only be done on one camera stream at a time. But there is a text > overlay effect, which you could use to overlay basic text over both > streams mixed. > >> Even more: is it possible to apply any effects like color correction to >> video data and compression to the resulting audio? I am thinking of adding >> some nice effects + jingles and apply these live while recording. Also >> subtle color correction to make pics of two different cams fit better >> would >> be really nice! >> > > You can apply a colour correction to the foreground frame. This can be > done in realtime. You could then apply a second colour correction to the > mix. What you cannot do (yet) is apply effects in realtime to the > background clip. As I mentioned, audio from the cameras is not yet > supported, but you could have some audio clips loaded and switch between > these with a camera stream in the background. > > I would recommend using a MIDI controller for all this, you may find it > easier to control. > > > I would advise also reading the LiVES manual, because all of this is > pretty advanced functionality. The manual is now a bit out of date and so > does not cover the live inputs, but all the rest of the stuff should be > described there - look at the sections on the clip editor, switching clips > and applying realtime effects and transitions, and recording/rendering. > > Cheers, > Gabriel. > > >> I wanted to test it, but I think it is better to ask before I try doing >> things that are impossible (yet) :) I know I am talking about features >> present in expensive hardware, but maybe with a very fast processor (or >> two >> or four) this can be done today? Any experiences with this kind of usage >> for >> lives? Would be a great help for the independent video underground... >> >> Thank you very much for your attention! >> >> Snaky >> ------------------------------------------------------------------------------ >> _______________________________________________ >> Lives-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/lives-users >> > > > > ------------------------------------------------------------------------------ > _______________________________________________ > Lives-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/lives-users > -- VJ pixel http://vjpixel.net http://openvideoalliance.org http://metareciclagem.org http://mediasana.org http://lives.sf.net ------------------------------------------------------------------------------ _______________________________________________ Lives-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/lives-users
