Using Gstreamer and souphttpsrc in Jupyter Notebook

Mon Sep 21 15:15:11 UTC 2020

Tony, thanks for all your help.  The debian package worked.  I guess I
didn't check that because the Jupyter installation guide made no mention of
a debian package.  I haven't gotten the soup part working yet, but I was
able to create the Gst element ok, so I'm back on the right path.

Thanks,
Jimmy

On Sun, Sep 20, 2020 at 7:52 AM Tony Houghton <h at realh.co.uk> wrote:

> 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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