In my case, I wanted to adjust the bit rates of the audio and do a little re-equalizing. For straight out “Normalizing” all you need to do is simply add your video files and press “Normalize”. The author offers a trial version, which I downloaded and installed.
This process is called “Normalizing”.Ī Google search returned only one batch MP4 volume normalizer of note, MP4Gain. I needed a way to make the audio volume level of all of my mp4 video files the same. Recently I compiled and organized them into an archive on my WDTV Live Hub, and I found that as I have used several different devices to record the episodes over the years, the audio volume levels range from barely audible to deafening. I have been saving episodes of the Discovery Channel show “ How It’s Made” for years. Mac users please see my Mac specific article HERE. MP4Gain – Normalize Audio Volume Levels in your MP4 Videos