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

[Justin]

Thank you everyone for the suggestions!

@David Ing your suggestion was definitely correct. As per your advice I
searched around for a list of required libraries for the gstreamer source
build and came across this article:
https://medium.com/@nareshkumarganesan/nvidia-hardware-accelerated-video-encoding-decoding-nvcodec-gstreamer-4b8eab662bf1.
It provided me a full list of suggested libraries to install to support
gstreamer. After installation, and some tweaking, the tutorial code
examples now seem to run fine. Thank you for your help!

On Wed, Sep 22, 2021 at 10:55 AM David Ing <ding at panopto.com> wrote:

> 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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