pes2txt: 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/pes2txt - from package: opencaster

You may install the required package with command apt-get install {package}
Error in other languages:
pes2txt: bevel nie gevind nie
pes2txt: comandă negăsită
pes2txt: comando não encontrado
pes2txt: commande introuvable
pes2txt: command not found
pes2txt: käsku ei ole
pes2txt: không tìm thấy lệnh
pes2txt: komanda nerasta
pes2txt: Kommando nicht gefunden.
pes2txt: kommandot finns inte
pes2txt: komut yok
pes2txt: nie znaleziono polecenia
pes2txt: níor aimsíodh an t-ordú
pes2txt: no se encontró la orden
pes2txt: no s'ha trobat l'ordre
pes2txt: opdracht niet gevonden
pes2txt: parancs nem található
pes2txt: perintah tidak ditemukan
pes2txt: príkaz nenájdený
pes2txt: příkaz nenalezen
pes2txt: команда не найдена
pes2txt: командата не е открита
pes2txt: 命令找不到
pes2txt: コマンドが見つかりません