FFmpeg audio conversions for PBX

Firstly, grab a copy of ffmpeg from the official website if you’re running Windows, or your package manager if you’re running Linux.

Samsung OfficeServ

ffmpeg -i "input.ext" -codec pcm_s16le -ar 8000 -ac 1 -ab 128k "output.wav"

LG/Ericsson eMG/UCP

ffmpeg -i "input.ext" -codec:a pcm_mulaw -ar 8000 -ac 1 -ab 64k "output.wav"

LG/Ericsson Hosted Platform

ffmpeg -i "input.ext" -codec:a pcm_s16le -ar 8000 -ac 1 -ab 64k "output.wav"

Panasonic NS700/NS1000

ffmpeg -i "input.ext" -codec:a pcm_mulaw -ar 8000 -ac 1 -ab 64k "output.wav"

Gamma Horizon Hosted Platform

ffmpeg -i "input.ext" -codec:a pcm_mulaw -ar 8000 -ac 1 -ab 64k "output.wav"

3CX

ffmpeg -i "input.ext" -codec pcm_s16le -ar 8000 -ac 1 -ab 128k "output.wav"

Sometimes, the files can be a little loud when played. You can simply knock this down during conversion via -af volume=0.8 which predictably equates to 80% of the original volume