For every batch that you are compressing you probably should give it a proper name other than what was automatically applied. For your batch you will likely have both an audio and video file. Each one should be named individually, with each having a comparable title with an indication as to whether it is audio or video. When you begin the compression it will also ask you to save the compression project by a name, which should be specified again to the project and any other information you would need for quick reference if opening this compression project again.