
Hi all, we have an instruction video with a bad sound. Most of it caused by breathing into the micro. I thought about using Audacity to clean it up. But first I have to "extract" the audio only, and later I have to re-attach the audio afterwards. I do not have any experience with it so any recommendation is welcome. Thank you Peter

On Fri, 16 Mar 2012, Peter Ross wrote:
we have an instruction video with a bad sound. Most of it caused by breathing into the micro.
I thought about using Audacity to clean it up.
But first I have to "extract" the audio only, and later I have to re-attach the audio afterwards.
I do not have any experience with it so any recommendation is welcome.
ffmpeg is quite useful for extracting audio. ffmpeg -i in.mkv -vn -ab 128 out.mp3

Quoting "Con Tassios" <ct@ct.id.au>:
On Fri, 16 Mar 2012, Peter Ross wrote:
we have an instruction video with a bad sound. Most of it caused by breathing into the micro.
I thought about using Audacity to clean it up.
But first I have to "extract" the audio only, and later I have to re-attach the audio afterwards.
I do not have any experience with it so any recommendation is welcome.
ffmpeg is quite useful for extracting audio.
ffmpeg -i in.mkv -vn -ab 128 out.mp3
And with the -newaudio option I can reattach the clearer sound? That seems to be exactly what I was looking for:-) Thanks Peter

On 16/03/12 3:32 PM, Con Tassios wrote:
ffmpeg is quite useful for extracting audio.
In my experience, anything involving ffmpeg requires hideous workarounds. I have had better experience with the GPAC tools including MP4Box. And mkvextract for pulling data out of mkv containers. ...Richard.
participants (3)
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Con Tassios
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Peter Ross
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Richard Archer