I did an apt-upgrade today... which included several gstreamer-
components, but not specifically gstreamer1.0-plugins-bad... but did
upgrade several other things and installed a new package that I haven't
seen before: gstreamer1.0-gl:amd64 1.14.0-2ubuntu1... and now all seems
well.
** Changed in: gst-plugins-bad1.0 (Ubuntu)
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1760693
Title:
gstreamer openglmixers
Status in gst-plugins-bad1.0 package in Ubuntu:
Fix Released
Bug description:
I've been trying to test using the openglmixers sinks, and found an
easily reproducible bug on todays build of bionic beaver. I've done
quite a bit using previous versions of the same plugins in 16.04, and
never ran into this one.
Steps to reproduce:
1) Fresh-install of bionic-beaver gstreamer1.0-plugins-bad with all of the
corresponding bits.
2) execute `gst-inspect-1.0 glvideomixer`
Results:
(gst-inspect-1.0:2868): GStreamer-CRITICAL **: 15:28:33.427: gst_bin_add:
assertion 'GST_IS_ELEMENT (element)' failed
(gst-inspect-1.0:2868): GStreamer-CRITICAL **: 15:28:33.427:
gst_bin_add: assertion 'GST_IS_ELEMENT (element)' failed
(gst-inspect-1.0:2868): GStreamer-CRITICAL **: 15:28:33.427:
gst_element_link_pads_full: assertion 'GST_IS_ELEMENT (src)' failed
(gst-inspect-1.0:2868): GStreamer-CRITICAL **: 15:28:33.427:
gst_element_get_static_pad: assertion 'GST_IS_ELEMENT (element)'
failed
(gst-inspect-1.0:2868): GStreamer-CRITICAL **: 15:28:33.427:
gst_element_link_pads_full: assertion 'GST_IS_ELEMENT (dest)' failed
(gst-inspect-1.0:2868): GStreamer-CRITICAL **: 15:28:33.427:
Trying to dispose object "mixer", but it still has a parent "(null)".
You need to let the parent manage the object instead of unreffing the object
directly.
...
Any gstreamer pipeline using the glvideomixer dies with the same
errors above. If I switch back to using the non-open-gl version of
'videomixer', the pipeline mostly-works, but is not hardware
accelerated... and tries to do everything in CPU, resulting in
horrible performance. Additionally, I am unable to pass multiple sink
elements into the non-gl videomixer without getting many nondescript
errors:
ERROR: from element /GstPipeline:pipeline0/GstUDPSrc:udpsrc3: Internal data
stream error.
Additional debug info:
gstbasesrc.c(3055): gst_base_src_loop ():
/GstPipeline:pipeline0/GstUDPSrc:udpsrc3:
streaming stopped, reason not-negotiated (-4)
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