eitsecfilter: 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/eitsecfilter - from package: opencaster

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