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FFMPEG Command to Apply Slow Reverbed & Stereo,Mono Effect to Audio File in Terminal
Jun 3, 2025
ffmpeg -i input.mp3 -filter_complex "atempo=0.85, aecho=0.8:0.9:1000:0.3" output.mp3
ffmpeg -i input.mp3 -filter_complex "atempo=0.85, aecho=0.8:0.9:700|900:0.3|0.25" output.mp3
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0:00
uh hello guys welcome to this video so
0:02
in this video I'll show you a ffmpg
0:04
command which will actually apply uh
0:07
various sound effects to your audio file
0:10
it can be slow reverb stereo effect mono
0:12
effect so these are very premium audio
0:15
effects that you can apply to audio
0:17
files it can be a song it can be music
0:20
as well so slow reverbed first of all I
0:23
will apply slow reverbed stereo effect
0:26
mono effect so let me show you the audio
0:28
file that I will be working right here
0:30
this is a simple recording hello guys
0:33
welcome to this video so in this video I
0:34
will show you by using maybe 30 you can
0:38
even uh just take any sort of song music
0:40
as well for copy copyright issues i
0:42
can't use any song in this video so I'm
0:45
just taking this input file so right
0:47
here just open your command line i have
0:50
given all these commands in the
0:52
description of this video so if you
0:54
basically need this you can copy paste
0:57
so the first
0:59
command this will apply the slow reved
1:02
effect so let me just show you for
1:05
ffmpg- i and then we provide the input
1:08
file name input.mpp3 and then we apply
1:11
the filter -ash
1:13
filter complex and in double quotes we
1:17
manipulate the a tempo value which is a
1:20
filter inside ffmppg we provide the
1:23
value
1:24
0.85 comma and then there is again this
1:28
filter a
1:29
echo so these are different filters
1:32
which are there in ffmppg so we are
1:35
simply applying those filters so let me
1:37
just paste it and I show you first of
1:40
all we provide the input file right here
1:42
after that we applying this filter dash
1:45
filter complex in double quotes we're
1:48
manipulating this value a tempo a echo
1:51
so your sound will echo as well
1:55
so So now this is complete just listen
1:59
to this effect the output file uh hello
2:03
guys welcome to this video so in this
2:05
video I will show you how to change
2:08
frame per second now to change the FPS
2:11
we simply write numeric value here so
2:14
you can see
2:15
the it has now this slow reved effect
2:19
effect so your sound is echoing so this
2:24
is the command that you can so this will
2:26
be really useful if you have a song or a
2:29
music it will be a very useful command
2:32
i've given this command in the
2:33
description so there is also a second
2:35
command you can also use which also does
2:38
the same thing but in a slightly
2:40
different way so let me paste it so here
2:44
we again providing manipulating this a
2:46
tempo value again manipulating a
2:49
echo so just listen this
2:53
effect so the command will you can see
2:56
it takes very less time to process it
2:59
and now you can uh hello guys welcome to
3:03
this video so this video using this flag
3:06
here dash so you can see we are not
3:08
using any sort of sound editor we are
3:10
simply using this open-source ffmpg
3:13
libraries so these two commands I've
3:14
given the in the description of this
3:16
video you can copy those commands and
3:19
play with these commands to create these
3:22
awesome sound effects so thank you very
3:24
much for watching this video and also
3:26
check out my website
3:28
freemediatools.com uh which contains
3:30
thousands of tools regarding audio video
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