CODEWITHSUNDEEP
gstreamerpkg-config
chronosynclastic
chronosynclastic

Reputation: 1675

Gstreamer plugins not found by gst-inspect-1.0

I'm running Ubuntu 16.04 with Anaconda Python distribution. I installed gstreamer-1.0 libraries using Synaptic. I wanted to test my installation with: gst-inspect-1.0 fakesrc (as suggested in the docs) but I get the following error:

No such element or plugin 'fakesrc'

So, I tried just typing gst-inspect-1.0. This told me that it looks like none of the plugins were successfully installed:

staticelements:  bin: Generic bin
staticelements:  pipeline: Pipeline object
Total count: 1 plugin, 2 features

I don't understand why no plugins are found because I had already installed through Synaptic the libraries: libgstreamer-plugins-bad1.0,libgstreamer-plugins-base1.0,libgstreamer-plugins-good1.0, libgstreamer-1.0-0 as well as all the -dev versions. I also made sure that I removed the old gstreamer0.10* plugins so that they wouldn't interfere.

Finally, I checked the output of pkg-config --cflags --libs gstreamer-1.0 and noticed something that might be causing the problem:

-pthread -I/home/guel/anaconda2/include/gstreamer-1.0 
-I/home/guel/anaconda2/lib/gstreamer-1.0/include 
-I/home/guel/anaconda2/include/glib-2.0 
-I/home/guel/anaconda2/lib/glib-2.0/include 
-I/home/guel/anaconda2/include 
-L/home/guel/anaconda2/lib -lgstreamer-1.0 -lgobject-2.0 -lglib-2.0

It looks like the required libraries are inside the Anaconda directories. Could that somehow prevent the gst-inspect-1.0 binary (which is in /usr/bin) to link to those libraries? My PKG_CONFIG_PATH contains the directory /home/guel/anaconda2/lib/pkgconfig.

Sorry if the question is too naive; I'm a beginner with pkg-config and linking libraries.

Upvotes: 0

Views: 10678

Answers (1)

chronosynclastic
chronosynclastic

Reputation: 1675

I solved the problem by first realizing that I had modified my PKG_CONFIG_PATH in my .bashrc file in order to add some custom pkgconfig paths for libraries like ffmpeg and anaconda (I had added e.g. /opt/ffmpeg/lib/pkgconfig). However, I forgot to keep the default paths in PKG_CONFIG_PATH and simply overwritten the variable with the new ones with export command.

The answer here helped me figure out where pkg-config searches for installed libraries by default. The default path includes the /usr/lib/x86_64-linux-gnu/pkgconfig directory where all gstreamer-*-1.0.pc are present. Therefore, it was just necessary to keep the default search paths of pkg-config so that the system could locate the gstreamer plugins.

Upvotes: 1

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