I have one more request.
WAV files seem to export only part of metadata.
FFmpeg has not been able to export album_artist, composer, ReplayGain info,
etc of WAV files.
Could you modify it to support metadata that can not be exported from WAV
source code: libavformat/wavdec.c
input method: wav_read_header(AVFormatContext *s)
The following is the actual input information of AIFF and WAV.
Innocence.aiff : aiff_input_fix_export_replaygain_version.txt
* Input of AIFF by FFmpeg which applied the patch of ReplayGain of AIFF
Innocence.wav : wav_input_by_ffmpeg4.1.1.txt
* Input of WAV by FFmpeg 4.1.1