[vlc-devel] building with java bindings
Diego Sanchez Gallo
dsgallo at larc.usp.br
Tue Nov 6 19:11:50 CET 2007
Thanks Tony. I will take a look on that.
Regards,
Diego
On 11/6/07, Tony Anecito <adanecito at yahoo.com> wrote:
>
> 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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