[gst-devel] problems with firewire port

[Edward Hervey]

Hi,

On Mon, 2008-07-28 at 14:21 +0100, Valentina Messeri wrote:
> Quoting Edward Hervey <edward.hervey at collabora.co.uk>:
> 
> > Hi,
> >
> >   Have you tried not specifying the port ? Unless you have several
> > cameras on your firewire port you don't need to specify it.
> >
> >   And a simpler way to test if you're getting anything from that source
> > is to try this:
> >   gst-launch-0.10 dv1394src ! fakesink
> >
> >   If that pipeline goes to playing, you're all set.
> 
> 
> ok:
> 
>   vale at valedipiu:~$ gst-launch-0.10 dv1394src ! fakesinkSetting  
> pipeline to PAUSED ...
> Pipeline is live and does not need PREROLL ...
> Setting pipeline to PLAYING ...
> New clock: GstSystemClock
> 

  Fine, therefore your source works fine.

> 
> but still "could not link dv1394src0 to dv" even if port is not specified....
> 
> Can you use firewire port for any other pourpose? i mean can you  
> suggets any other pipeline i can use for capture only? (sorry very  
> newbie in gst...)
> 
> >
> >     Edward
> >
> > P.S. 'sudo gst-launch-0.10' <== BAD BAD BAD ! Change your user
> > privileges to be able to access that device as non-root.
> 
> why? i mean why is that BAD?

  What if one of those plugins does something stupid (by mistake) and
tries to erase your hard drive ? Do you still want to run that pipeline
as root ?

  That pipeline of yours is overkill and deprecated also. the '{' '}'
style is from 0.8.
  You're using a dv decoder as if it was a demuxer (use dvdemux after
your source).

   Edward

> 
> thx!!!!!
> 
> Vale
> 
> 
> 
> 
> >
> > On Mon, 2008-07-28 at 13:48 +0100, Valentina Messeri wrote:
> >> I!
> >>
> >> We're tryin to run this pipeline, in order to stream from firewire port:
> >>
> >>   vale at valedipiu:~$ sudo gst-launch-0.10  dv1394src port=0 ! dvdec
> >> name=dv quality=3 {
> >> dv.audio ! queue ! audioconvert !
> >> audio/x-raw-int,rate=22050,channels=2 ! queue !
> >> vorbisenc quality=0.5 ! queue ! mux. } { dv.video ! queue ! videorate !
> >> video/x-raw-yuv,framerate=25/2 ! videoscale !
> >> video/x-raw-yuv,width=320,height=240 !
> >> ffmpegcolorspace ! tee name=tscreen ! queue ! autovideosink tscreen. !
> >> queue ! theoraenc
> >> quality=2 ! queue ! mux. } { oggmux name=mux ! shout2send ip=xxx.xx  
> >>  port=8000
> >> mount=mountpoint.ogg password=xxxx streamname= description= genre= url= }
> >>
> >> BUT:
> >>
> >> WARNING: erroneous pipeline: could not link dv1394src0 to dv
> >>
> >> i'm actuallly using:
> >>
> >>   gst-launch-0.10 version 0.10.18
> >> GStreamer 0.10.18
> >> https://launchpad.net/distros/ubuntu/+source/gstreamer0.10
> >>
> >> on a intel coreduo:
> >>
> >> Linux valedipiu 2.6.24-16-generic #1 SMP Thu Apr 10 13:23:42 UTC 2008
> >> i686 GNU/Linux
> >>
> >> modules ok:
> >>
> >> ohci1394               33584  1 dv1394
> >> ieee1394               93752  4 raw1394,dv1394,sbp2,ohci1394
> >>
> >>
> >> I'm linux-videomaker but not so experienced using gstreamer....and,
> >> for example...can't
> >> catch how to set correctly port and channel parameters.
> >> Gscanbus says port is 0......
> >>
> >> I googlelize but couldn't find info :D so i'm available to produce,
> >> once i could make it
> >> works....
> >>
> >> :)
> >>
> >> http://encosianima.net/
> >>
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> > --
> > Edward Hervey <edward.hervey at collabora.co.uk>
> > Collabora Multimedia
> >
> >
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> >
> 
> 
> 
> http://encosianima.net/
> 
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-- 
Edward Hervey <edward.hervey at collabora.co.uk>
Collabora Multimedia