Often we come across videos that has either a very low or a very high audio volume that forces us to adjust the volume level in our speakers or media player. Sometimes the audio is so faint that turning up the audio volume knob only amplifies the background noise making the actual audio inaudible. Fortunately, there is a fix available.
To rectify such video files, we have to adjust the audio level or in other words, normalize the audio. Earlier I had shown you how to normalize MP3 files. This time we will normalize a video file.
The software we will require is Virtualdub, a free open source video editor. Remember that this method will work only with AVI files (i.e. MPEG4 encoded). If you have an MPEG file you will need to convert it to AVI first.
Open Virtualdub and load the video into the editor.
From the Video menu, select "Direct Stream Copy".
From the Audio menu, select "Full Processing Mode".
From the Audio menu click on “Volume”, check the box "Adjust volume of audio channels" and then adjust the volume level using the slider.
Preview the volume level by playing the output video file. If you are not satisfied, go back to the previous step to readjust the volume.
Finally, save the file as AVI.