Outputdata wrong

[Mattis95]

Hi all,
I use a machine with Ubuntu 20.04.2 LTS. I installed gst-shark like explained on the Getting started page with the option for ubuntu.
When I run any pipeline, for example the example pipeline for cpu usage:
GST_DEBUG="GST_TRACER:7" GST_TRACERS="cpuusage" gst-launch-1.0 videotestsrc num-buffers=10000 ! 'video/x-raw, format=(string)YUY2, width=(int)640, height=(int)480, framerate=(fraction)30/1' ! videorate max-rate=30 ! videoconvert ! queue ! avenc_h263p ! queue ! avimux ! fakesink
I get no error but the result dosen't make sense at all, the percent values vary between -20000 and +10000. I added a result file.
tracer.pdf
I wasn't able to reproduce this on an other machine, so I think I have done something wrong with the installation process, but reinstalling gstreamer and gst-shark did not help.
Do you have any advice?

[hugosvirak]

I get the exact same unfortunately

[robbel]

I observe the same (negative cpu usage output) on Ubuntu 18.04 when following the installation instructions on the gst-shark site.