Missing plugin from gst-plugins-bad

[Philippe Normand]

Hi Matt,

On Fri, 2020-12-25 at 10:15 +1100, therecycledrobot at gmail.com wrote:
> Hi all,
> 
> I am trying to use the GstWPE plugin in GStreamer to experiment with
> HTML/web page based overlays (
> https://github.com/Igalia/gst-wpe-webrtc-demo). However, I cannot
> seem to load the plugin, which is contained in the gst-plugins-bad
> package.
> 
> The machine is Ubuntu 20.04 and I have installed gst-plugins-bad via
> "apt-get install gstreamer1.0-plugins-bad" and have confirmed that it
> is indeed installed with version 1.16.2-2.1ubuntu1 (and according to
> the documentation, GstWPE has been included in that package since
> 1.16, so it should be there).
> 

I don't think GstWPE officially shipped in 20.04. It is available in
20.10 though:
https://packages.ubuntu.com/groovy/gstreamer1.0-wpe

You might be able to find a PPA for 20.04.
Another option could be to use a Docker setup including GStreamer 1.18
and the WPE dependencies, such as:
https://hub.docker.com/r/restreamio/gstreamer

Philippe

> When I check for the existence of its main element, wpesrc, by
> running "gst-inspect-1.0 wpesrc" it returns "No such element or
> plugin wpesrc".
> 
> I have searched wide and far to figure out why it's not working
> without any success, including reading 
> https://gstreamer.freedesktop.org/documentation/additional/design/missing-plugins.html?gi-language=c
> but, being a new GStreamer user, I really see anything relevant in
> there (although I might be mistaken, and would be happy to be
> corrected). Is there a way to enable/disable specific plugins which I
> have missed?
> 
> Any help would be appreciated!
> 
> Thanks,
> Matt
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