[FFmpeg-user] superimpose audio on stream

Zoltan Kerenyi Nagy kerenyi.nagy.zoltan at gmail.com
Mon Apr 2 15:02:11 EEST 2018


yes, but it's not quiet what I'd like.

I'm here so far, now I'm playing with the volume filter, but i'd like the
waveform as well:

# enlarge the original stream with a bottom pad:
bottompad=40

ffmpeg -i "$stream" -vf
"pad=width=240:height=160+$padbottom:x=0:y=0:color=black" outfile.mp4

# audio volume

ffmpeg -i $stream -filter_complex "[0:a]showvolume=f=1:b=3:w=240:h=20"
audioVolume.mp4

On 2 April 2018 at 13:49, Moritz Barsnick <barsnick at gmx.net> wrote:

> On Mon, Apr 02, 2018 at 09:39:18 +0200, Zoltan Kerenyi Nagy wrote:
> > I'd like to overlay the audio waveform coming from an axis camera's
> stream.
> > I've started to read the documentation, but It's quiet complex. For
> testing
> > I use that bunny stream.
> [...]
> > I'd like similar to this video:
> >
> > https://www.youtube.com/watch?v=BG9SYC0wWYw
> >
> > Could you please help me?
>
> Did you read that video's description (and the comments)? The command
> line is kindly included.
>
> Moritz
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