[vlc-devel] building with java bindings

[Tony Anecito]

Hi Diego,

I am using JVLC as a viewer but not as a server for
streaming out video. I have had recent problems with
JVLC but it was as mentioned not having a native
window available. In the process of doing that I
discovered there is a jni call to describe the
exception that might help. The issue is the vlc code
trying to indicate a problem but the java code not
handling it and I got an exception pending error and
the jre crashed.
This might be different than your issue. The JVLC team
is working on updateing the interfaces to the native
vlc methods and it might be done in two week.

Hope the jni describeException call can help.

Regards,
-Tony

--- Diego Sanchez Gallo <dsgallo at larc.usp.br> wrote:

> Hi Tony,
> 
> since you work with jvlc on windows, maybe you can
> help me with my issue...
> I'm trying to use the VLM part of jVLC, to do a
> simple video streaming...
> and I got stuck in the following problem...
> 
> I'm trying this:
> 
>         JVLC jvlc = new JVLC(options);
>         try {
>             jvlc.vlm.addBroadcast("Test channel",
> "E:\\video.mpg",
>
"#duplicate{dst=std{access=rtp,mux=ts,dst=224.123.111.120:1234}}",
> null,
> true, false);
>         } catch (VLCException e) {
>             e.printStackTrace();
>         }
> 
> and I'm getting the following exception:
> 
> org.videolan.jvlc.VLCException: Media Test channel
> creation failed
>     at org.videolan.jvlc.VLM._addBroadcast(Native
> Method)
>     at
> org.videolan.jvlc.VLM.addBroadcast(VLM.java:39)
>     at test.Test.main(Test.java:19)
> 
> I tried to identify what is this issue and what to
> do to fix it but I
> couldn't find a solution... neither on the list nor
> trying to debug the
> aplication and looking inside the C code... So I
> would like to know if you
> have any idea in what could be the reason for this
> error... The video file
> is there and I already tried to use other formats
> (like file://E:/video.mpg)
> with no success... I've also tried to stream through
> unicast instead of
> multicast but got the same error...
> 
> Any help would be greatly appreciated.
> 
> Thanks in advance,
> Diego
> 
> On 11/6/07, Tony Anecito <adanecito at yahoo.com>
> wrote:
> >
> > Hi Alexander,
> > I am working with the windows cygwin build so I
> can
> > not help. At least one of the jvlc developers is
> on
> > vacation so not sure when they might get to you
> but it
> > might be soon.
> > I do not have problems with the dlls for windows
> > except for an issue with input not found error
> when
> > doing a java reparent() after the creation of a
> vlc
> > instance. The jvlc developers are going to fix
> that
> > soon and add more to the java bindings interface
> (I
> > think). After that hopefully the windows bindings
> will
> > be working again.
> > Considering Sun just announced a Java Media
> Control is
> > in the works I am hoping it will have a positive
> > effect on the java bindings group.
> >
> > Regards,
> > -Tony
> >
> > --- Alexander Bethke <abethke at oamk.fi> wrote:
> >
> > > Hi again,
> > >
> > > still trying to build a vlc that has working
> > > java-bindings, flv-muxing
> > > and latest ffmpeg (nellymoser decoding), that
> can
> > > serve as a extension
> > > for Red5.
> > > I took the vlc revision from 01.06.2007,
> guessing
> > > from svn commit
> > > messages that the java bindings are still
> working by
> > > then (before change
> > > to media instance). But the latest ffmpeg is not
> > > compatible with this
> > > vlc revision it seems. Producing following error
> on
> > > vlc startup:
> > >
> > > cannot load module
> > > `/usr/local/lib/vlc/codec/libffmpeg_plugin.so'
> > > (/usr/local/lib/vlc/codec/libffmpeg_plugin.so:
> > > undefined symbol:
> > > IF2block_size)
> > >
> > > Is the 01.06. revision a good guess or can I
> also
> > > take a later one for
> > > the bindings to work. Anybody any hints?
> Littlejohn
> > > perhaps?
> > > Otherwise I might just have to sadly say goodbye
> to
> > > the java bindings in
> > > my project and connect Red5 and vlc's video
> stream
> > > per http and remote
> > > control like via vlm telnet interface(?). Or
> does
> > > somebody have a better
> > > idea?
> > >
> > > @j-b: RTMP support in vlc would be the best
> thing.
> > > :) But I think this
> > > is out of the scope for me now.
> > >
> > > By the way is anybody investigating on that
> > > flv-muxing bug at the moment?
> > >
> > >
> > > I am kind of lost with this one,
> > >
> > > Thanks for your help, Alex
> > >
> > >
> > > _______________________________________________
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> > >
> >
> >
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