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Old 12th February 2024, 15:26   #1  |  Link
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Join Date: Sep 2008
Posts: 989
FFmpeg arnndn filter has bugs?

Test files: https://we.tl/t-TrGUOgj5IN

ffmpeg.exe -i out-full.wav -filter_complex [0:a]arnndn=m=sh.rnnn[s0] -map [s0] out-full.sh.wav

1 case) Spectrograms of result look exactly same on i5-2500M and i7-13700K:

2 case) But for i7-8700K and Ryzen 5 5500 results look like this [both have similar look, but not same]:

Anyone knows what is going on? Or how to debug it?

I tried:
ffmpeg.exe -i out-full.wav -filter_complex [0:a]arnndn=m=sh.rnnn[s0] -map [s0] o_0.wav -cpuflags 0
For "1" case it didn't had influence, for "2" case it produced ~slightly different spectrograms.

Tried FFmpeg v5.1.2 vs v6.1.1, no influence on "1" case, for "2" case spectrograms ~slightly different.

Last edited by VoodooFX; 12th February 2024 at 15:29.
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