If you have an mp4 video, you can use ffmpeg (check in the search box on the right of the page. You can use any value you like so if you wanted to increase the volume by only 20db, you’d pass 'volume=20dB' in the command. Ffmpeg: increase the audio volume of a mp4 video. Running the above command will increase the audio by 50 decibels.

Using ffmpeg allowed me to increase the volume of the video in a few seconds and saved me a whole lot of steps.įfmpeg -i -vcodec copy -af 'volume=50dB' FFmpeg has a -volume switch that you can pass to manipulate the video volume. Recording the talk again wasn’t something I wanted to do either so I did a bit of googling and it turns out its possible to increase the volume in a video file from the Linux command line. Giving the talk live wasn’t an option, I had concerns that my old laptop wouldn’t be up to the task of live streaming a whole talk, so I had to fix the audio. A few days before the conference, Marlene, the conference chair, sent me an email letting me know that the audio in the video was barely audible and that I’d either have to give the talk live or do something about the audio. I hadn’t noticed that the volume on my mic had been very low. I knew that I wouldn’t be able to give my talk live, so I sent the organisers a recording of the talk that I had made a few days before. I had the privilege of giving a talk at this conference. Pycon Africa 2020 took place on August 4 to 8 of 2020.

Twitter GitHub Vuyisile Ndlovu Musings of a backend Software Developer 10th August 2020 by Vuyisile in commandline, linux, video editing, volume Linux: How to increase video volume without re-encoding video

Increase volume of mp4