faad: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/faad - from package: faad

You may install the required package with command apt-get install {package}

Error in other languages:
faad: bevel nie gevind nie
faad: comandă negăsită
faad: comando não encontrado
faad: commande introuvable
faad: command not found
faad: käsku ei ole
faad: không tìm thấy lệnh
faad: komanda nerasta
faad: Kommando nicht gefunden.
faad: kommandot finns inte
faad: komut yok
faad: nie znaleziono polecenia
faad: níor aimsíodh an t-ordú
faad: no se encontró la orden
faad: no s'ha trobat l'ordre
faad: opdracht niet gevonden
faad: parancs nem található
faad: perintah tidak ditemukan
faad: príkaz nenájdený
faad: příkaz nenalezen
faad: команда не найдена
faad: командата не е открита
faad: 命令找不到
faad: コマンドが見つかりません