decode_with_drops: 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/decode_with_drops - from package: libvpx-utils

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

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