[FFmpeg-user] removing audio from section of video

[Francois Visagie]

> -----Original Message-----
> From: ffmpeg-user-bounces at ffmpeg.org [mailto:ffmpeg-user-
> bounces at ffmpeg.org] On Behalf Of johnd
> Sent: 15 January 2013 23:26
> To: FFmpeg user questions
> Subject: Re: [FFmpeg-user] removing audio from section of video
> 
> On Tue, Jan 15, 2013 at 08:22:13PM +0000, Carl Eugen Hoyos wrote:
> > johnd <john <at> jjdev.com> writes:
> >
> > > If I want to say remove the audio from a part of a video,
> > > must I first break that out then replace the audio for
> > > the entire piece, then concat back together?
> >
> > (I find this very difficult to understand, typical
> > questions on this list are: "I tried ffmpeg -i input
> > -c copy out.avi - see complete, uncut console output
> > at the end of my email - how can I remux only the
> > video?")
> 
> I'm trying to understand things conceptually.  I am describing
> a process I am trying to accomplish.
> 
> For example:
> 
> I have an input video.  At 10 seconds into the video I want to remove
> audio for 5 seconds, then have the audio continue.
> 
> I am trying to understand the general steps so I can then decide
> how to construct the command line args.
> 
> I was assuming (from the little I have learned) that I would
> have to first cut the video into three, remove sound from the section
> from 10 seconds in (duration 5) and then concat all three.
> 
> Then I'd have a file that was missing sound from the 10 second point
> for 5 seconds.  (question? shouldn't it have sound that is muted as
> opposed to no sound track?)
> 
> 
> I just want to understand if this is the way it would be done (at
> a high level), or if there is another process I should follow
> to get my end goal.

Although I haven't tried it, I suspect what you're describing is possible
with ffmpeg.

However, instead of battling with archane and seldom-used command-line
options (to me) in cases like this, I normally just open the file in a video
editor and mute the required segment.