Pipeline Debugging.

[Tiago Katcipis]

Hi Richard,

When i found myself in situations like yours i find useful to use the
identity element before/after the element that I'm suspecting to be the one
that stalled. Also, GST_DEBUG is extremely useful, if you just use
GST_DEBUG=5, the amount of debug information is overwhelming, but if you
use GST_DEBUG=element:level, it gets a lot more interesting (i found a lot
of bugs on my elements using GST_DEBUG=my_element:5).

Debug in general:
http://gstreamer.freedesktop.org/data/doc/gstreamer/head/manual/html/section-checklist-debug.html

Identity element:
http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-plugins/html/gstreamer-plugins-identity.html

Debug elements that may be useful:
http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-good-plugins/html/gst-plugins-good-plugins-plugin-debug.html

Hope this helps.

Best regards,
Tiago Katcipis

On Sat, May 5, 2012 at 9:36 AM, Richard <tuxbox.guru at gmail.com> wrote:

> Hi All,
>
> Is there a method in Gstreamer to determine which component in the
> pipeline has stalled. Currently I have a FIFO file written to by an
> application, this FIFO file is read by a filesrc SRC component and
> after mangling the data is written to a FDSINK (which is a TCP/IP
> handle to a Video viewer)
>
> Randomly (it feels like it) the Gstreamer pipeline stops consuming
> data out the FIFO and then it overflows. I have to tear the pipeline
> down and re-start it for the data flow to resume.
>
> Is there callback function/callback that shows how many packets were
> consumed/produced as I have no idea what pipe is stalling.
>
> I am using a leaky queue before the fdsink to help protect the
> MPEGTSDEMUX/other components but even in this case the filesource
> stops reading data.
>
> I have tried using GST_DEBUG but that spams the console its almost
> unusable... any alternatives to find out where the holdup is occuring?
>
> Richard
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