Gstreamer Error: pipeline could not be constructed: no element “v4l2src”

Question

Am using Ubuntu(14.04) and I am getting this error while trying to use gstreamer.

gst-launch-1.0 v4l2src !  video/x-raw,width=640,height=480 !  x264enc ! h2         


        

Answer 1

Does

gst-inspect-1.0 -b

list any blacklisted plugins? If not check the the pluging pysically exists:

locate libgstvideo4linux2.so

There should be one under e.g.

/usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstvideo4linux2.so

or

/usr/lib/gstreamer-1.0/libgstvideo4linux2.so

Then remove the registry cache again and run

GST_DEBUG="*:5" gst-inspect-1.0 2>debug.log

Search the log for v4l2 and check if gstreamer reports a reason why it won't load the plugin.