Using Gstreamer and souphttpsrc in Jupyter Notebook

[Tony Houghton]

I googled "jupyter deb" and found this
<https://pkgs.org/download/jupyter-notebook>. There also seems to be at
least one PPA containing it. I'm not sure what you mean about the namespace
error, but I googled that too, and it seems that could be because the
python bindings for gstreamer are missing. There should be packages called
python3-gst-1.0 and/or python-gst-1.0.

If none of this works, you could also try installing gstreamer-plugins-bad
and use the curl plugin instead of soup. Or is soup necessary to integrate
with Jupyter?

On Sun, 20 Sep 2020 at 05:14, Jimmy Bush <mr.jimmybush at gmail.com> wrote:

> Well, I'd be happy to use the 1.16 version that comes with Linux Mint 20
> (which I think is what apt would be), but I haven't found how to get
> gstreamer to work in the Jupyter Notebook.  At least the conda-forge
> version fixes the namespace error.
>
> I have only found conda and pip ways of installing Jupyter Notebook.  If
> there's an apt way to do that, that might get me further.
>
> Barring that, should I continue to try the local build route?  I also
> found the article linked below suggesting that GI_TYPELIB_PATH might be the
> issue.  Does gstreamer/gobject-introspection rely on environment variables
> that Notebook might not be seeing?
>
>
> https://stackoverflow.com/questions/50440365/raise-valueerrornamespace-s-not-available-namespace-valueerror-namespace
>
> On Sat, Sep 19, 2020 at 5:49 PM Tony Houghton <h at realh.co.uk> wrote:
>
>> Couldn't you just use apt instead of conda?
>>
>> On Sat, 19 Sep 2020 at 20:48, Jimmy Bush <mr.jimmybush at gmail.com> wrote:
>>
>>> When I execute
>>>
>>>     conda install gst-plugins-good
>>>
>>> it causes gstreamer, gst-plugins-base, and gst-plugins good to be
>>> installed.  All are 1.14.5.  Same behavior, as gst-inspect-1.0 reports "No
>>> such element or plugin 'souphttpsrc'.
>>>
>>> After uninstalling these conda packages, I also attempted to install
>>> jupyter notebook with pip in my conda workspace.  This installed okay, and
>>> it didn't break my command line usage of souphttpsrc.  In the notebook,
>>> however, when I try to gi.require_version("Gst", "1.0"), it gives me an
>>> error that "Namespace Gst not available", even though I have
>>> gobject-introspection and pygobject installed.  If this is an easier
>>> problem to attack, it would let me use 1.16, which might be preferable
>>> given that a lot of gst_plugins packages aren't available in conda.
>>>
>>> Thanks,
>>> Jimmy
>>>
>>> On Sat, Sep 19, 2020 at 1:15 PM Tony Houghton <h at realh.co.uk> wrote:
>>>
>>>> It looks like soup is in gst-plugins-good, so try installing that too.
>>>>
>>>> On Sat, 19 Sep 2020 at 17:21, Jimmy Bush <mr.jimmybush at gmail.com>
>>>> wrote:
>>>>
>>>>> Hey, everyone, sorry if this is the wrong forum for this.
>>>>>
>>>>> I have been working for the last week to run gstreamer inside a
>>>>> Jupyter notebook, and for the most part I have been successful.  From the
>>>>> command line of Linux Mint 20, I am able to run the 1.16.2 version of
>>>>> gstreamer with gst-launch-1.0 call, and I use souphttpsrc and youtube-dl to
>>>>> watch a youtube clip.
>>>>>
>>>>> From
>>>>> http://lifestyletransfer.com/how-to-watch-youtube-videos-with-gstreamer/
>>>>>
>>>>> gst-launch-1.0 souphttpsrc is-live=true location="$(youtube-dl
>>>>> --format "best[ext=mp4][protocol=https]" --get-url
>>>>> https://www.youtube.com/watch?v=ndl1W4ltcmg)" ! decodebin !
>>>>> videoconvert ! autovideosink
>>>>>
>>>>> Works great.  When I install Jupyter in conda, it pulls 1.14.5
>>>>> versions of gstreamer and gst-plugins-base.  I have been able to pop up the
>>>>> videotestsrc within Jupyter Notebook as one would expect.  However, I
>>>>> can no longer use souphttpsrc. If I gst-inspect-1.0 souphttpsrc, I get "No
>>>>> such element or plugin 'souphttpsrc'".  Same is true if I conda install
>>>>> gstreamer by itself.  From my readings, I think that means that
>>>>> --enable-soup was not used.
>>>>>
>>>>> My questions:
>>>>> 1) Has anyone gotten this to work?
>>>>> 2) Is there a version of gstreamer for conda with soup enabled?
>>>>> 3) Should my next step be to build gstreamer locally, enabling soup
>>>>> myself?
>>>>> 4) Would there be value in trying to publish a soup-enabled version to
>>>>> conda-forge? Would 1.14.5, 1.16.2 or 1.18 be the best candidate should I
>>>>> get that far?
>>>>>
>>>>> I've used Linux for several years, but this would be my first foray
>>>>> into contributing to the open source community, so please help with any
>>>>> baseline misunderstandings on my part.
>>>>>
>>>>> Thanks,
>>>>> Jimmy
>>>>>
>>>>> _______________________________________________
>>>>> gstreamer-devel mailing list
>>>>> gstreamer-devel at lists.freedesktop.org
>>>>> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>>>>
>>>>
>>>>
>>>> --
>>>> TH
>>>>
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>>
>>
>> --
>> TH
>>
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-- 
TH
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