[FFmpeg-user] show the audio waveform of a file

[Paul B Mahol]

On Wed, Aug 25, 2021 at 11:22 AM Michael Koch <astroelectronic at t-online.de>
wrote:

> Hi,
>
> is it possible to convert the waveform of an entire audio file (or a
> segment of it) to a picture?
> The "showwavespic" filter has the problem that for each sample it draws
> a line from +level to -level. For example, if the input is a +0.5 DC
> signal, I can't decide from the output picture if the level was +0.5 or
> -0.5. I need a filter that draws only a pixel for each sample. Like an
> oscilloscope.
>

If you have 65536x44100000 image sure.


>
> Michael
>
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