# [vlc-devel] building with java bindings

Victor Fuertes Zanon vicfueza at teleco.upv.es
Wed Nov 7 12:56:31 CET 2007

```Hi Diego,

I know Javadocs say you must use the output MRL, and I used it firstly, but I
got an error. The error I got was that 'access' and 'mux' were not specified :?
After a lot of tests, I found the solution I told you.

I use Ubuntu 7.04 Feisty Fawn running on a VMWare. My native OS is MacOSX Tiger
(I'm using an Intel-based MacBook :p). I have tried to compile the latest
subversion revisions but I have not been sucessful. For my application I
website and compiled it myself by doing (on the linux console):

...

sudo ./compile --enable-java-bindings --enable-v4l
sudo make
sudo make install

...

I hope this helps!

Regards, Víctor.

Mensaje citado por Diego Sanchez Gallo <dsgallo at larc.usp.br>:

> Hi Victor,
>
> I was using that format for the output cause in the javadoc they say the
> output parameter is "the output MRL (the parameter to the "sout"
> variable)"... So I tried to use that (from VLC client) in many formats, but
> never only the address:port.... I tried that (hoping that it will work) but
> got the same error message :-(
> Anyway it is good to know that it worked for you using that format... Just
> one question, what version of jVLC are you using on linux? and are you using
> the release from the vlc site (for linux 64bits) or did you compile vlc with
> java bindings by yourself?
>
>
> Regards,
> Diego
>
>
> On 11/6/07, Victor Fuertes Zanon <vicfueza at teleco.upv.es> wrote:
> >
> > Hi Diego,
> >
> > I'm working on a videoconference application using JVLC. I'm using Linux,
> > so my
> > environment is a little different from yours.
> >
> > I used a code similar to the code you show and I got an error too. Try to
> > change
> > the line:
> >
> > channel","E:\\video.mpg","#duplicate{dst=std{access=rtp,mux=ts,dst=
> > 224.123.111.120:1234}}",null,true,false);
> >
> > by the lines:
> >
> > channel","E:\\video.mpg","rtp://127.0.0.1:1234",null,true,false);
> > jvlc.vlc.playMedia("Test channel");
> >
> > where 127.0.0.1 is the destination address and 1234 is the destination
> > port.
> >
> > I'm not an expert so, if my solution doesn't work, I'm so sorry...
> >
> > Cheers, Víctor
> >
> > Mensaje citado por Diego Sanchez Gallo <dsgallo at larc.usp.br>:
> >
> > > 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 {
> > > "#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 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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