[theora] Webcam streaming with ptalarbvorm

[John Kintree]

I didn't get to watch it today, Basil.  Please stream it again tomorrow.
Regards,
John Kintree

On Thursday 15 April 2010 04:02 pm, Basil Mohamed Gohar wrote:
> Well, I'm going to be stopping my stream here shortly.  If you guys are
> actually interested in seeing it tomorrow, I can start it again when I
> get to work.  I was happy to get it to work completely through
> gstreamer, because that will greatly simplify using it for live streams
> of other things in the future.  Of course, I'll make sure to update you
> guys about that when the time comes as well.  ;)
>
> *Basil Mohamed Gohar*
> abu_hurayrah at hidayahonline.org
> http://www.basilgohar.com/blog/
>
> IslamicHomeschool.com - Islamic Education for the Home
> <http://www.islamichomeschool.com/>
>
> On 04/15/2010 01:56 PM, Basil Mohamed Gohar wrote:
> > Hey all!  I'm sure you've all been missing my webcam stream, so I
> > decided to start it up again (also, I wanted to do it for my family
> > overseas).
> >
> > However, this time, I'm doing things a little bit differently.  For
> > starters, the encoder is the current (as of about an hour ago)
> > ptalarbvorm branch which is destined to become libtheora 1.2.  Another
> > difference is that I'm using gstreamer (via gst-launch) to handle every
> > aspect of the webcam streaming, from capturing through to streaming.
> > The command for that is as follows:
> >
> > time gst-launch-0.10 -vvvvv --messages --eos-on-shutdown v4l2src !
> > 'video/x-raw-yuv, width=640, height=480' ! videorate ! 'video/x-raw-yuv,
> > framerate=15/1' ! queue max-size-bytes=100000000 max-size-time=0 !
> > theoraenc bitrate=150 ! oggmux ! tee name=ogged ! queue
> > max-size-bytes=100000000 max-size-time=0 ! oggdemux ! theoradec !
> > xvimagesink sync=false ogged. ! queue max-size-bytes=100000000
> > max-size-time=0 ! filesink location=`date +%F_%T`.ogv ogged. ! queue
> > max-size-bytes=100000000 max-size-time=0 ! shout2send
> > ip=media.basilgohar.com port=8000 password=***passwordhidden***
> > mount=/basil-at-work.ogv streamname='Basil at Work' description='Live
> > video stream of me at work' genre='Webcam'
> > url='http://media.basilgohar.com/stream/' ogged.
> >
> > It might seem a bit daunting at first, and yes, it's taken me a while
> > before I can figure that out and piece it together myself (with plenty
> > of help from #gstreamer, especially ds & MikeS).
> >
> > To explain each step, I am first capturing from my webcam (a v4l2
> > device), I reduce the framerate to 15 fps (since it only does 30 fps
> > natively).  I then encode that stream into Theora at a constant bitrate
> > of 150 kbps.  I then mux the raw Theora video into an Ogg container.
> > Then I demux and decode the video again to view it realtime on screen
> > (so I can see the quality of it as it will be streamed.  Then I write
> > the file to disk.  Then, finally, I do the actual streaming of the file
> > out to my IceCast2 server.
> >
> > Previously, I used to do this with a combination of ffmpeg for capturing
> > the video, encoder_example (from the libtheora source) for the video
> > encoding, and then oggfwd for sending it out to the actual server for
> > streaming.  Now I can use gstreamer for all the parts, from start to
> > finish.
> >
> > Oh, the link...;)
> >
> > http://media.basilgohar.com/stream/
> >
> > You can view that embedded in the browser directly, or you can use that
> > page and grab the raw URL and watch the stream however you like.
>
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