fvstereodecoder: 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 CentOS possible default full paths are:

/usr/bin/fvstereodecoder - from package: fawkes-firevision-tools

You may install the required package with command yum install {package}

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