gmerlin-encoders-extra software package provides MJPEG encoders for Gmerlin, 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 gmerlin-encoders-extra
gmerlin-encoders-extra is installed in your system.
Make ensure the gmerlin-encoders-extra package were installed using the commands given below,
$ sudo dpkg-query -l | grep gmerlin-encoders-extra *
You will get with gmerlin-encoders-extra package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Libraries |
| Package | gmerlin-encoders-extra |
| Version | 1.2.0-8+b1 |
| Description | MJPEG encoders for Gmerlin |
| Sub Section | Libs |