One software license is required per user.
Each purchased license key is good for all supported platforms and includes the right to run the transcoder on one machine.

mediaEngine is available for Microsoft Windows and Linux. It comes as a command line transcoder.

mediaEngine SDK - Optional addition to full mediaEngine SDK is available for integration with 3rd party products.

Maintenance and Support* - Includes updates within the same major version (e.g., 2.xx) and support via e-mail.

* It is recommended that you purchase Maintenance and Support with your License.