People often ask themselves how to find a volume level software.
Either to normalize the loudness of the audio or video files.
This occurs much more frequently since the music was not recorded in analog form, to become digital music and digital video.
One of the reasons is because digital audio and video files can take up a lot of space if they have not been compressed.
Obviously when digital audio was used, the space it occupied did not matter much.
No one bought a music LP thinking about how much space it takes up.
But when that long play was digitized and saved on the computer’s hard drive, the amount of space it would take up was important and relevant.
That is why the need arose to create audio and video formats that had a quality very similar to the uncompressed Originals but that did offer good compression.
But of course it happens that to be able to compress a file you have to discard a lot of information.
You even have to rely on many strategies where volume is one of the main variables used to discard information.
One of several mechanisms that are used to compress in the case of MP3, for example, is what we call masking.
And this masking is based on a behavior of the human ear.
This behavior of the ear produces that if two sounds with similar frequencies occur more or less at the same time but one of them has a greater volume than the other, the human ear will not perceive the one that has a lower volume.
So it can be discarded and with it you have less information and therefore it takes up less space on the hard disk … but this mechanism, like others, uses the volume as one of the criteria with which it seeks to save space by compressing and the criterion for compressing is volume.
Another criterion for compressing is kilobytes per second and this directly affects the dynamics of the music which obviously has an effect on loudness.
That is, when we found the need to compress the audio, there was a side effect that generated a disparity in the volume and loudness levels, with all the problems that this implies.
And then people feel the need to find some software that can normalize the volume and loudness levels of audio or video files.
Mp4gain is the only software that can successfully normalize audio and video files of the main formats. You can even convert audio or video files, between different formats or even extract the audio from a video and generate an audio file, of the audio format we choose.
For this reason, mp4gain has practically become the norm for normalizing the level and loudness of audio in video and audio files.
