YUV420pt75filter: 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/YUV420pt75filter - from package: dirac

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

Error in other languages:
YUV420pt75filter: bevel nie gevind nie
YUV420pt75filter: comandă negăsită
YUV420pt75filter: comando não encontrado
YUV420pt75filter: commande introuvable
YUV420pt75filter: command not found
YUV420pt75filter: käsku ei ole
YUV420pt75filter: không tìm thấy lệnh
YUV420pt75filter: komanda nerasta
YUV420pt75filter: Kommando nicht gefunden.
YUV420pt75filter: kommandot finns inte
YUV420pt75filter: komut yok
YUV420pt75filter: nie znaleziono polecenia
YUV420pt75filter: níor aimsíodh an t-ordú
YUV420pt75filter: no se encontró la orden
YUV420pt75filter: no s'ha trobat l'ordre
YUV420pt75filter: opdracht niet gevonden
YUV420pt75filter: parancs nem található
YUV420pt75filter: perintah tidak ditemukan
YUV420pt75filter: príkaz nenájdený
YUV420pt75filter: příkaz nenalezen
YUV420pt75filter: команда не найдена
YUV420pt75filter: командата не е открита
YUV420pt75filter: 命令找不到
YUV420pt75filter: コマンドが見つかりません