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1. License Manager

All Pixelmania’s products use an industry standard licensing system called Reprise License Manager (RLM), that is licensed from Reprise Software, Inc. This software allows for reliable and fair license tokens that can be used for both node locked and floating license arrangements.

2. Finding your Host ID for specifying to Pixelmania when buying a license

For Pixelmania to be able to issue a valid license to run NNSuperResolution, you need to provide us with your Host ID. The Host ID is a number that is unique to a specific computer that can be used to identify that computer for licensing purposes. Most often it’s the same as the MAC address of your primary ethernet device (en0), but without the colons (“:”). The format is always a hexadecimal string made up of 12 characters.

An example Host ID would be: c56ef435b23d

There are multiple ways to find out your Host ID on your workstation (for node locked licenses), or on you license server (for floating licenses). The easiest one is to download Pixelmania License Server software from the downloads page on our website. Once downloaded and extracted, you will have a utility executable called rlmutil. To get the Host ID, do the following:

  • Open a terminal
  • Change directory to the place where you extracted the Pixelmania License Server, for example “cd ~/Downloads/PixelmaniaLicenseServer-v1.0.1_Linux”
  • Run the rlmutil executable with the following flags: rlmutil rlmhostid ether

Copy the acquired Host ID by selecting it, right-click and choose “copy”, or by selecting it and pressing Ctrl+Shift+C. You can now paste it into the purchase form in the Shop of our website.

An alternative way would be to run the system utility /sbin/ifconfig to print information about all your network devices, and then look for your primary network device (“ether” or “en0”) to find the MAC address. Remove the “:” characters and you have your Host ID.

2. Node Locked License

A node locked license is limited to run on only a single machine, specified by the Host ID that was communicated to Pixelmania at the time of purchase. A node locked license doesn’t need a license server to be setup, and the installation of the license file is simple.

There are a couple of different options of how to install the license file. The recommended way is to simply copy the provided license file to this folder on the local file system (you will highly likely need administrative permissions to do so):


Another option is to put it in the same folder as you installed the downloaded plugin package, i.e. in the same folder as the file is located. This is not recommended since you may accidentally delete it when updating to a newer version of the plugin.

The last option is to put the license file in a custom folder of your choice, and create an environment variable called pixelmania_LICENSE that points to that folder. The simplest way to create this environment variable is to put a single line like this in your .bashrc file in your user’s home folder:

export pixelmania_LICENSE=/full/system/path/to/license/folder

3. Floating License

3.1 Starting the rlm server

A floating license requires running a license server on your local network. Please download our license tools from the downloads page on our website under the section Pixelmania License Server. Once downloaded and extracted to a preferred location, you can start the server with the rlm command:

% rlm [-c license_file] [-dlog [+]logfile]

    [-nows] [-ws port] [-x [rlmdown|rlmremove]]

    [-install_service] [-service_name sname]

    [-isv_startup_delay seconds]

The -c license_file flag overrides the RLM_LICENSE environment variable, and makes it possible to directly specify a path to a folder where you keep your license file(s).

The -dlog logfile specifies the path to a log of what the server does. If you precede the path to the log file with a + character, the log fill be appended instead of overwritten.

The -nows and -ws port options control the operation of the embedded Web Server. The -nows option instructs the rlm server to not start the embedded web server. The -ws port option instructs the rlm server to use port as the port number for the web server.

The -x [rlmdown | rlmremove] option controls whether the rlmdown and/or rlmremove commands will be processed by the server. Specifying only -x will disable both commands. Specifying either command name after the -x will disable just that command.

These options can appear in any order on the command line.

Please note that if the rlm server cannot bind the web server port (which is 5054 by default), the server will not start and directly exit. 

3.2 Configuring the clients to connect to the server

Once the license server is up and running, you need to direct the clients so they can connect to the license server and use the licenses it’s serving. There are three alternatives to configure the clients:

The easiest option is to set the environment variable pixelmania_LICENSE to point to the correct host and port that is running the license server. The format to use is [email protected] where port is the TCP/IP port of the server, where the default is 5053. The host is the hostname of the license server on the network, for example “licman”. The full line to set it to use the example values directly in a terminal or in a .bashrc file would be:

export [email protected]

The second option is to create a new license file (just a simple text file with the file ending .lic) in the following folder:


The actual license file needs to edited to include the following two lines only:

HOST <hostname> 5053

ISV pixelmania

You do need to replace <hostname> with the actual host name of the license server on the network (without the < and > brackets!). If you’ve changed the default port of 5053 to something else, you do need to specify that here as well.

The third option would be to create a license file exactly as above, but place it in a custom path of your choice. I you decide to do that, you need to specify the environment variable pixelmania_LICENSE and point it to that custom folder. The simplest way to create this environment variable is to put a single line like this in your .bashrc file in your user’s home folder:

export pixelmania_LICENSE=/full/system/path/to/license/folder

License Transfer

If you find yourself in a situation where you need to transfer one of your Pixelmania product licenses from an old machine to a new, please visit the License Transfer Form page.