pamdeinterlace: 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 CentOS possible default full paths are:

/usr/bin/pamdeinterlace - from package: netpbm-progs

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

On Debian possible default full paths are:

/usr/bin/pamdeinterlace - from package: netpbm

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