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Old 26th May 2020, 20:54   #1910  |  Link
JKyle
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Join Date: Sep 2018
Posts: 411
Quote:
Originally Posted by lordalibaski View Post
Have a listen to this original capture
Code:
https://fromsmash.com/Sx_EM8QFUX-bt
This is a conversion using the settings you said
Code:
https://fromsmash.com/l1utbSmE5t-bt
I can hear a slight difference but not much.
These two are definitely different. I put those two videos in one folder and ran this command in a Command Prompt window:

Code:
for %a in (*.*) do ffmpeg -hide_banner -i "%a" -c:v copy -af "volumedetect" -sn -f null NUL 2>> log.txt
And log.txt is like this.

As you can see there, test.vob has
Code:
mean_volume: -24.4 dB
max_volume: -10.4 dB
while testaac.mp4 has
Code:
mean_volume: -14.0 dB
max_volume: -0.1 dB
Just looking at those two index values, anyone can see that they are very different.

If you really want to edit the spectrum pattern of the audio, you need to use a dedicated audio editing app such as Audacity or Ocenaudio, not a simple audio filter in ffmpeg.

Last edited by JKyle; 26th May 2020 at 21:00.
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