No element "avdec_h264"

[Nirbheek Chauhan]

On Thu, Feb 17, 2022 at 4:30 PM yongcong wu via gstreamer-devel
<gstreamer-devel at lists.freedesktop.org> wrote:
>
> Dear support,
>
> I installed gstreamer in centos7.9.
> #dnf install gstreamer1-devel gstreamer1-plugins-base-tools gstreamer1-doc gstreamer1-plugins-base-devel gstreamer1-plugins-good gstreamer1-plugins-good-extras gstreamer1-plugins-ugly gstreamer1-plugins-bad-free gstreamer1-plugins-bad-free-devel gstreamer1-plugins-bad-free-extras

You need gstreamer1-libav for all avdec_* and avenc_* elements.
Obviously CentOS doesn't ship those, but you can add rpmfusion repos
and get it: https://rpmfusion.org/Configuration. It will be available
with the RHEL 7 free repo.

Cheers,
Nirbheek