[FFmpeg-user] Replace part of the audio

[Paul B Mahol]

On 1/19/23, Michael Koch <astroelectronic at t-online.de> wrote:
> Am 19.01.2023 um 15:49 schrieb Alexander Bieliaev via ffmpeg-user:
>> How can I replace a part of the audio from and to a specific time with
>> some
>> other audio/sound (I want to replace it with beep in this case)?
>>
>
> Here is an example:
>
> ffmpeg -lavfi sine=500:d=10 -y audio1.wav
> ffmpeg -lavfi sine=2000:d=10 -y audio2.wav
>
> ffmpeg -i audio1.wav -i audio2.wav -lavfi
> [0]volume='1-between(t,4,6)':eval=frame[a];[1]volume='between(t,4,6)':eval=frame[b];[a][b]amix
>
> -y out.wav

That is never going to give smooth transitions.

Also overly complicated as can be simplified with commands to to amix filter.

>
> Michael
>
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