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 ! h264parse ! rtph264pay ! udpsink host=127.0.0.1 port=5000
I have checked the gst-inspect-1.0 v4l2src
It say element not found "No such element or plugin 'v4l2src'"
What should I do ? From where can I get this element or plugin. I have tried resinstalling entire gstreamer. But am unable to do so.
the v4l2src plugin belongs to the gstreamer-plugins-good package; so
sudo apt-get install gstreamer1.0-plugins-good
should help you out
Gstreamer packages most of its plugins in separate packages; you have
- gst-plugins-base
- gst-plugins-good
- gst-plugins-ugly
and more. They are pluggable; so just updating gstreamer won't auto-select gst-plugins-good for you...
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.
I'm using a gstreamer-1.0 on Raspberry and I was having the same issue. As I was running out of options I've tried to install also the 0.10 plugins and unexpectedly it works.
sudo apt-get install gstreamer0.10-plugins-good
my 2 cent ^_^
EDIT: Well, actually it doen't work yet, but at least it's giving me a different error :)
EDIT 2: It was a syntax error, It actually works for me :)
On Ubuntu you can install with just:
sudo apt-get install v4l-utils
来源：https://stackoverflow.com/questions/28712079/gstreamer-error-pipeline-could-not-be-constructed-no-element-v4l2src