user21499: I currently have a 1 minute long video where in the beginning of the video someone says something inappropriate. I was wondering what the easiest way to silence that part of the video would be. I am wondering if Quicktime or iMovie can do the job in Mac.

user34894: Use ffmpeg (terminal tool).
https://github.com/fluent-ffmpeg/node-fluent-ffmpeg/wiki/Installing-ffmpeg-on-Mac-OS-X
Copy the audio into a separate file.
Then use ffmpeg again to silence desired part (https://stackoverflow.com/q/38180809/2792138 or https://stackoverflow.com/q/29215197/2792138).
Then merge new audio file with the initial video file, replacing old audio track.

21499: <p>I currently have a 1 minute long video where in the beginning of the video someone says something inappropriate. I was wondering what the easiest way to silence that part of the video would be. I am wondering if Quicktime or iMovie can do the job in Mac.</p>
 34894: <p>Use ffmpeg (terminal tool).
<a href="https://github.com/fluent-ffmpeg/node-fluent-ffmpeg/wiki/Installing-ffmpeg-on-Mac-OS-X" rel="nofollow noreferrer">https://github.com/fluent-ffmpeg/node-fluent-ffmpeg/wiki/Installing-ffmpeg-on-Mac-OS-X</a></p>
<p>Copy the audio into a separate file.
Then use ffmpeg again to silence desired part (<a href="https://stackoverflow.com/q/38180809/2792138">https://stackoverflow.com/q/38180809/2792138</a> or <a href="https://stackoverflow.com/q/29215197/2792138">https://stackoverflow.com/q/29215197/2792138</a>).</p>
<p>Then merge new audio file with the initial video file, replacing old audio track.</p>
