[h323plus] h323plus and video codecs

Vladimir Fekete vladko.fekete at gmail.com
Fri Jan 7 06:34:13 EST 2011


Hello Jan,

  thank you very much for the help ! Worked like a charm :-)

Best regards,

  Vladimir

On Wed, Jan 5, 2011 at 3:57 PM, Jan Willamowius <jan at willamowius.de> wrote:

> Hi Vladimir,
>
> all video codecs are plugins, so you need to set the PWLIBPLUGINDIR to
> point to the right directory so they get loaded.
>
> Take a look at the openam sample application how one would send video
> from a file.
>
> Regards,
> Jan
>
> --
> Jan Willamowius, jan at willamowius.de, http://www.gnugk.org/
>
>
> Vladimir Fekete wrote:
> > Hello all,
> >
> >  I'd like to ask you for help/hint about video codecs in h323plus
> (v1.22).
> > Since I'm new I'm not sure I understand everything correctly.
> >
> > What I want to do :   I don't have a camera, but I'd like to be able to
> send
> > some video through the net (between/using 2 MyPhone applications as
> > endpoints).
> >
> > Thanks to other tutorials I was able to rewrite the OpenAudioChannel, so
> I
> > was able to transmit wav file. I hoped it will be equally "easy" for the
> > video. Unfortunately, for MyPhone application, execution did not even
> > entered the OpenVideoChannel method. So I looked at the capabilities of
> my
> > end point and there are no video codecs. So, I'd like to ask you:
> >
> > Are the missing video codes my only problem ? (e.g. do I understand it
> > correctly, that I only need to rewrite OpenVideoChannel in order to read
> > from a file/stream ?)
> >
> > Are video codecs in h323plus represented as plugins only or there should
> be
> > some internal ones which works ?
> >
> > Could ffmpeg plugin for h323 help me ?
> >
> > I tried to compile ffmpeg plugin and use it. Compilation went fine (I get
> > the dll and 2 header files), so I tried to use it. Unfortunately due to
> lack
> > of documentation (other than code itself) I was able to find only classes
> as
> > OpalDynaCodecDLL from dynacodec.h which seemed to do the job (to allow me
> to
> > add h.263 capability and add video codec). However there is dllcodec.h
> file
> > missing in whole h323plus project (I was able to trace it down in
> openh323
> > which is obsolete afaik) and also some classes were missing (such as
> > OpalDLLCodecInfo). I tried to download the OPAL project source codes, but
> I
> > was not able to find dllcodec.h.
> >
> > any hint will be appreciated.
> >
> > Best regards,
> >
> >  Vladimir
>
>
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