In this video I go over a tutorial on using Audacity to remove unwanted background noise in a video or audio file. Audacity is a free and very impressive audio editing piece of software and can be downloaded at https://www.audacityteam.org/. I have had issues with background noise for quite some time and my efforts at removing all practical background noise in the room I record my videos were still not enough. After going over many hours of trial and error and scavenging the internet for audio editing tips, I finally discovered a procedure that worked well for me; and which I have compiled into this video tutorial.
Note that when importing MP4 video files into Audacity it automatically separates the M4A audio file but which requires additional libraries to be downloaded and can be done so here: https://manual.audacityteam.org/man/faq_installing_the_ffmpeg_import_export_library.html.
The main tools I use is the Audacity “Noise Reduction” and occasional “Amplify” option. It is important to first select the most generic background noise to better remove it from a larger section of the video file. After that I suggest skimming through to find any additional and unique background noise and then remove it from those specific regions of the video. Minimizing the number of edits is key to maintain decent sounding audio and especially speech. Spotting background noise is best done with Noise Cancelling Headphones, so I also recommend obtaining a pair if you are in the business of video or audio production.
Later in the video I quickly go over using the Camtasia video editing software to remove the old audio from a video and then add the new fixed audio from Audacity. Camtasia also has a general noise removal option, but it is best done as a second layer to that of Audacity since Camtasia is not as fined tuned or specific as Audacity.
I hope you enjoy this tutorial and let me know if it works well for you!
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