user26625: I have a MXF file with 6 mono channel (part of a 5.1 mix), How can I create a new mxf increasing the volume of the third (center) channel without reencoding video and the other audio channels? 

user1871: The command template would be,
ffmpeg -i in.mxf -map 0 -c copy -filter:a:2 volume=2 -c:a:2 pcm_s16le out.mxf


26625: <p>I have a MXF file with 6 mono channel (part of a 5.1 mix), How can I create a new mxf increasing the volume of the third (center) channel without reencoding video and the other audio channels? </p>
 1871: <p>The command template would be,</p>

<pre><code>ffmpeg -i in.mxf -map 0 -c copy -filter:a:2 volume=2 -c:a:2 pcm_s16le out.mxf
</code></pre>
