From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ricardo Wurmus <rekado@elephly.net>
Subject: Re: WebKit: Failing to play most HTML5 videos
Date: Tue, 11 Dec 2018 09:02:47 +0100
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To: Pierre Neidhardt <mail@ambrevar.xyz>
Cc: help-guix <help-guix@gnu.org>


Pierre Neidhardt <mail@ambrevar.xyz> writes:

> Leo Famulari <leo@famulari.name> writes:
>> It works for me on Debian if I install (at least) gst-plugins-base and...
>
> Hmm, weird.  Possible explanations I can see:
>
> - It's hardware related.  I have an Intel HD 620, driver i915.
> - Something is not purely functional in the dependency graph.
> - It's kernel related, I am on GuixSD.
>
> It used to work perfectly a few weeks ago.  I'll have to try out the diff=
erent
> kernel/mesa/gstreamer combinations.  Pfeww, lots of work :(

I don=E2=80=99t think the kernel is at fault.  This is usually a problem wi=
th
gstreamer only.  Do not forget about environment variables.

I=E2=80=99d suggest looking for gstreamer debugging options and tracing the
discovery of plugins specifically.

I=E2=80=99m seeing the same behaviour in epiphany (and eolie), both webkit
browsers.  I have these gstreamer packages installed:

gst-plugins-good	1.14.3	out	/gnu/store/ar5i930rzx6gx0fllxlj7v0di8av98dn-gst=
-plugins-good-1.14.3
gst-plugins-ugly	1.14.3	out	/gnu/store/7w2bqvdnylh4y87m6r40k644pxd17g3x-gst=
-plugins-ugly-1.14.3
gst-plugins-bad	1.14.3	out	/gnu/store/x8m0kdj9x6smm6ybwd3rzkcpqw809pim-gst-=
plugins-bad-1.14.3
gst-plugins-base	1.14.3	out	/gnu/store/hyjjxxc2q5sfhkmm9iq3g34afm21b62v-gst=
-plugins-base-1.14.3

I used to also have gst-libav, which made a lot of things work better at
a time.

Relevant environment variables:

    GST_PLUGIN_SYSTEM_PATH=3D/home/rekado/.guix-profile/lib/gstreamer-1.0:/=
run/current-system/profile/lib/gstreamer-1.0
    GST_PLUGIN_PATH=3D/home/rekado/.guix-profile/lib/gstreamer-1.0

--
Ricardo