Audio decoders missing/not working with meson-built Gstreamer 1.18.5 components

[David Ing]

The build (gst-build) requires many packages to be installed in order to
support certain features.  I am guessing that you didn't have a vorbis
library installed before executing the build, and so the gstreamer plugin
for vorbis was never built.

As an example, the build on fedora is actually done like this:
https://gitlab.freedesktop.org/gstreamer/gst-ci/-/blob/1.18/docker/fedora

For an ubuntu build, you'll need to find and install similar packages.  The
exact packages for ubuntu are not typically documented by the gstreamer
devs ... that responsibility typically falls to the ubuntu distro
maintainers (or whoever maintains their package universe).

On Wed, Sep 22, 2021 at 7:41 AM Justin via gstreamer-devel <
gstreamer-devel at lists.freedesktop.org> wrote:

> Extra detail I found: I see this warning in one of the tutorials:
>
> warning: No decoder aviable for type audio/x-vorbis
>
> On Wed, Sep 22, 2021 at 9:25 AM Justin <mrjextreme6 at gmail.com> wrote:
>
>> Hello I am new to trying out Gstreamer.
>>
>> Running the tutorial code (e.g. tutorial 1) against the Gstreamer 1.18.5
>> libraries in devenv produces video but no sound. Audio decoders are either
>> missing or not working. I'm running Ubuntu 20.04 LTS and I've tried the
>> same code with the native apt-installed Gstreamer 1.16 version and both
>> audio/video work with the native libraries.
>>
>> Only strange thing I saw in meson build output was the base-plugins built
>> with warnings regarding meson versions but I have the latest 0.59 version
>> so I disregarded.
>>
>> Has anyone else seen this before? Any suggestions?
>>
>
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