FFMPEG – Merging .wav files with acrossfade and getting audio crackling

Question

i’m merging two audio files into 1 with a acrossfade filter.

Here is my acrossfade filter config: acrossfade=d=10:o=1:curve1=cbr:curve2=cbr;

The merge is working well, but for some files it results in a intense audio crackling when both of files are playing togheter.

Thanks for any help.

I’m using fluent-ffmpeg, but the commando line should be it:

ffmpeg -i file1.wav file2.wav -filter_complex "acrossfade=d=10:o=1:curve1=log:curve2=log"

The log provided by fluent-ffmpeg is:
SEE THE LOG HERE

PS: this issue only occurs when one or both files are .wav

Answer