I have a call center recording (when played it sounds gibberish) for which the mediainfo shows info as
ion@aurora:~/Inbound$ mediainfo 48401-3405-48403--18042018170000.wav
General
Complete name : 48401-3405-48403--18042018170000.wav
Format : Wave
File size : 327 KiB
Duration : 4mn 11s
Overall bit rate : 10.7 Kbps
Audio
Format : G.723.1
Codec ID : A100
Duration : 4mn 11s
Bit rate : 10.7 Kbps
Channel(s) : 2 channels
Sampling rate : 8 000 Hz
Stream size : 327 KiB (100%)
The ffmpeg info shows this as
ion@aurora:~/Inbound$ ffmpeg -i 48401-3405-48403--18042018170000.wav
ffmpeg version N-91330-ga990184 Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.9) 20160609
configuration: --prefix=/home/ion/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/ion/ffmpeg_build/include --extra-ldflags=-L/home/ion/ffmpeg_build/lib --extra-libs='-lpthread -lm' --bindir=/home/ion/bin --enable-gpl --enable-libaom --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree
libavutil 56. 18.102 / 56. 18.102
libavcodec 58. 20.103 / 58. 20.103
libavformat 58. 17.100 / 58. 17.100
libavdevice 58. 4.101 / 58. 4.101
libavfilter 7. 25.100 / 7. 25.100
libswscale 5. 2.100 / 5. 2.100
libswresample 3. 2.100 / 3. 2.100
libpostproc 55. 2.100 / 55. 2.100
Input #0, wav, from '48401-3405-48403--18042018170000.wav':
Duration: 00:04:11.37, bitrate: 10 kb/s
Stream #0:0: Audio: g723_1 ([0][161][0][0] / 0xA100), 8000 Hz, mono, s16, 10 kb/s
At least one output file must be specified
So I converted this file to PCM using
ffmpeg -acodec g723_1 -i 48401-3405-48403--18042018170000.wav -acodec pcm_s16le -f wav outnew1.wav
But the audio still sound gibberish , I tried many variation and only Goldwave worked but that works on windows and with GUI not cli.
So how can I convert this file to something useful so that atleast I can listen to it , It feels like a challenge now.
Audio file : https://drive.google.com/open?id=1T54lKaI6IJmOqTPNOA_OkYRz89EQ5F2L
PS : Use VLC to play audio file
