[gst-devel] Icecast a dv stream via ogg

[matheist76 at westnet.com.au]

Okay. I've attached some sample files. 

test.ogg was created using this script, CPU 32% and 100%
gst-launch-0.10 dv1394src ! queue ! dvdemux ! queue ! ffdec_dvvideo ! queue ! theoraenc quality=4 ! oggmux name=mux ! filesink location=test.ogg

test2.ogg was created using a pre saved dv file, CPU 100 and 27%  
gst-launch filesrc location=test.dv ! dvdemux ! queue ! ffdec_dvvideo ! queue ! theoraenc quality=4 ! oggmux name=mux ! filesink location=test2.ogg

And finally I created a mpg from the live dv stream. CPU 32 and 36%
gst-launch filesrc dv1394src ! dvdemux ! queue ! ffdec_dvvideo ! queue ! fenc_mpeg2video ! mpegtsmux ! filesink location=test.mpg

Thanks guys.

Matt

----- Original Message -----
From: "Ben Schwartz" <bmschwar at fas.harvard.edu>
To: "Discussion of the development of GStreamer" <gstreamer-devel at lists.sourceforge.net>
Sent: Tuesday, 11 May, 2010 11:45:24 PM GMT +10:00 Brisbane
Subject: Re: [gst-devel] Icecast a dv stream via ogg

On Tue, 2010-05-11 at 16:15 +0800, matheist76 at westnet.com.au wrote:
> It produces much the same thing except with a lower cpu usage. 

Is the CPU usage below 100% on all cores?  Most gstreamer elements just
fail hard when the system runs out of CPU.

BTW, you really want a lot of queues: one before DV decode, another
before Theora encode, and another before writing to disk.  You could
even have one between theoraenc and oggmux.

> I think the real problem is with the theora encoding. Are there any other plugins that will do the same job?

Nope, theoraenc is the one and only.  If you post a sample output ogg we
might be better able to diagnose.

--Ben


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