RM

Files that use the .rm file extension contain media files that are used by the RealNetwork's RealPlayer application. The RealPlayer is a computer application that streams audio and video data or links to streaming media files on the Internet. This allows users to watch or listen to the files in real time.Files with the .rm extension contain compressed information. The data in the RM files is compressed using RealNetwork's RealAudio and RealVideo codecs, making them easier to distribute and store.

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MP3

MP3 is an audio coding format for digital audio. Originally defined as the third audio format of the MPEG-1 standard, it was retained and further extended—defining additional bit rates and support for more audio channels—as the third audio format of the subsequent MPEG-2 standard. A third version, known as MPEG 2.5—extended to better support lower bit rates—is commonly implemented, but is not a recognized standard.

- - Wikimedia

Step-By-Step to Convert RM to MP3 for Mac

Interface

Step 1. Download and install the program, then double click it to run it, and then you'll see the main interface of the program.

Load Files

Step 2. Click "Add File(s)" button. Here you can select "Add Video" or "Add Folder" button to add files as you like.

Profile

Step 3. Click the drop-down arrow right beside the "Profile" column and select your desired video format from the drop-down list.

Edit

Step 4. Click "Edit" button to customize the output video like Effect, Trim, Crop, 3D Settings and Watermark.

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