SuperAVConverter is a professional ALL-in-ONE multimedia conversion tool, which can help you to convert RMVB to Apple TV MP4 or whatever format you want. SuperAVConverter supports so many media formats that it can almost handle whatever conversion job you want, SuperAVConverter will be your best choice!
Step1: After download the SuperAVConverter, install and run it, you can see two different conversion engines in first screen. Click the 'Load Portable Engine' button to load the corresponding encoders.

Step2: Click the 'Add video to list' button to import your rmvb file/files into the video source list. SuperAVConverter supports batch conversion, so you can import multiple files at a time. If you experience any problems adding files by directly clicking the 'Add' button, you can click 'Add video to list -> Add video files' or 'Add video to list -> Add all video files in a folder' to add the video files you want to convert from your computer.


Step3: Then you need to select your output format, click the drop-down list as follow:





Step4: Now you can see the task list and add/modify/remove from the queue. Don't forget to setup the Output folder.






Congratulations! You have finished your RMVB to Apple TV MP4 conversion by following this step by step guide with SuperAVConverter.