vbv: command not found

Have You tried accessing the binary with the full path?

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/vbv - from package: opencaster

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