[vlc] Re: VLC with AXIS 241Q server and MPEG4?

[Sigmund Augdal]

On Tue, Apr 12, 2005 at 07:50:55AM +0200, Marcel Ruff wrote:
> Sigmund Augdal wrote:
> >On Mon, Apr 11, 2005 at 07:39:51PM +0200, Marcel Ruff wrote:
> >
> >>Hi,
> >>
> >>has anybody successfully used VLC with AXIS
> >>241Q in RTP/UPD multicast mode and MPEG4?
> >
> >I have unsuccessfully tried to view streams from one axis(I belive) camera.
> >This was however set up for sending through http or similar.
> 
> I'll report back my results, i think the AXIS video server
> is using mpeg4ip ...
> 
> >
> >
> >>I want to use 4 video sources (AXIS) connected over
> >>an IGMP capable 1GB switch with 9 sinks (video clients).
> >>Is the RTP multicast approach the right thing to try?
> >
> >If the camera provide standard rtp multicast, and has a .sdp file for it,
> >vlc should be able to play that just fine. This setup should be good enough
> >for your needs then. Before spending too much time coding though, you 
> >should
> >test in a standalone vlc instance. (if you haven't bought the camera yet 
> >you
> >should proably wait for someone else to answer whether it is possible).
> >
> >>I have an existing Motif / gtk X11 GUI (C and C++ on Linux)
> >>and want to embed vlc into it.
> >>Is there an example how to do this?
> >
> >The mozilla plugin in vlc's sources is an excellent example of this.
> >
> >
> >>How can i merge the two main loops?
> >
> >VLC uses threads, so I don't think that is necessary.
> >
> >
> >>Any hint if it is possible and were to take care
> >>are welcome.
> >
> >It should be possible, but the integration part will need some coding. Note
> >that VLC is gpl, and if you use vlc inside your application, this
> >application must be gpl or compatible as well.
> 
> The GPL license issue is another problem for me.
> (Note: I respect and honour all open source developers for their
> beautiful piece of work.)
> 
> Is mozilla getting GPL software when the vlc plugin is loaded,
> if yes i think nobody may use the plugin as nobody can change
> anothers license during the plugin is loaded?
I'm a bit uncertain about the gory details here, but basically this is how I
view it:
Mozilla is released under the mozilla license, which is gpl-compatible. This
mean that vlc-mozilla-plugin can depend on mozilla. It doesn't change
mozillas license to load the plugin, what is important for the license is
how things are distributed. Vlc mozilla plugin is distributed by videolan
for usage with mozilla, if the user desides to use it with opera, netscape
or any other program capable of loading a mozilla plugin, that is the users
problem. Now if an app with a non-gpl-compatible license is shipping with the
vlc-plugin, then the case is a bit different. If now the non-gpl app also
has little to no function when the vlc plugin is removed that is a clear
violation.

> 
> Is the adobe pdf plugin getting GPL software when the vls plugin is loaded
> additionally?
I'd say no. these two doesn't in any way depend on each other, even though
they might run in the same process. 

> Do you know any other open source video player which
> is cabapable doing what i need with a more free license
> like LGPL (for example could mpeg4ip do it which is under Mozilla license)?
The ffmpeg library, which vlc depend on for most of it's codec action, is
gpl. You could perhaps consider using it directly rather than embedding an
existing player?

Sigmund
> 
> thanks
> Marcel
> 
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-- 
Sigmund Augdal
Edgar B. Schieldropsv 29-14
N-7033 Trondheim
Norway
tlf: 91809129

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