gst123 software package provides GStreamer based command line media player, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install gst123
gst123 is installed in your system.
Make ensure the gst123 package were installed using the commands given below,
$ sudo dpkg-query -l | grep gst123 *
You will get with gst123 package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Video |
| Package | gst123 |
| Version | 0.3.3-1+b2 [amd64, arm64, arme |
| Description | GStreamer based command line media player |
| Sub Section | Video |