[FFmpeg-user] Replace part of the audio
Paul B Mahol
onemda at gmail.com
Sun Jan 22 17:25:24 EET 2023
On 1/22/23, Michael Koch <astroelectronic at t-online.de> wrote:
> Am 21.01.2023 um 17:05 schrieb 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
>>>> 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
>>> -y out.wav
>> That is never going to give smooth transitions.
>> Also overly complicated as can be simplified with commands to to amix
> If my example is too complicated, then please show a simpler example.
asendcmd=10.0 amix weights 'X Y',
X/Y being wanted volume of first/second input to amix filter.
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