How can I keep bitrate and DN when I just want to change fps?

[maldon]

Original file (25 fps) on eac3:

AC3, 5.1 channels, 1:38:47, 384kbps, 48kHz, dialnorm -27dB

I used this:

audio.ac3 -25.000 -changeTo23.976 -keepdialnorm

The result (23.976 fps) on eac3:

AC3, 5.1 channels, 1:43:01, 640kbps, 48kHz

I want to keep DN and 384kbps.

[tebasuna51]

Change duration implies recode the audio, you can use:

eac3to audio.ac3 stdout.w64 -25.000 -changeTo23.976 | ffmpeg -i - -c:a ac3 -b:a 384k -dialnorm -27 -center_mixlev 0.707 output.ac3

[maldon]

Originally Posted by tebasuna51

Change duration implies recode the audio, you can use:

eac3to audio.ac3 stdout.w64 -25.000 -changeTo23.976 | ffmpeg -i - -c:a ac3 -b:a 384k -dialnorm -27 -center_mixlev 0.707 output.ac3

Thanks, but now eac3to says:

Don’t found ffmpeg.exe

Which version of ffmpeg should I download and how to install it?

https://ffmpeg.zeranoe.com/builds/

[tebasuna51]

The static version 32 bit (or 64 if your OS is 64 bit).
You only need ffmpeg.exe at same folder than eac3to.exe and other files.