testMPEG2TransportStreamer: 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/testMPEG2TransportStreamer - from package: livemedia-utils

You may install the required package with command apt-get install {package}
Error in other languages:
testMPEG2TransportStreamer: bevel nie gevind nie
testMPEG2TransportStreamer: comandă negăsită
testMPEG2TransportStreamer: comando não encontrado
testMPEG2TransportStreamer: commande introuvable
testMPEG2TransportStreamer: command not found
testMPEG2TransportStreamer: käsku ei ole
testMPEG2TransportStreamer: không tìm thấy lệnh
testMPEG2TransportStreamer: komanda nerasta
testMPEG2TransportStreamer: Kommando nicht gefunden.
testMPEG2TransportStreamer: kommandot finns inte
testMPEG2TransportStreamer: komut yok
testMPEG2TransportStreamer: nie znaleziono polecenia
testMPEG2TransportStreamer: níor aimsíodh an t-ordú
testMPEG2TransportStreamer: no se encontró la orden
testMPEG2TransportStreamer: no s'ha trobat l'ordre
testMPEG2TransportStreamer: opdracht niet gevonden
testMPEG2TransportStreamer: parancs nem található
testMPEG2TransportStreamer: perintah tidak ditemukan
testMPEG2TransportStreamer: príkaz nenájdený
testMPEG2TransportStreamer: příkaz nenalezen
testMPEG2TransportStreamer: команда не найдена
testMPEG2TransportStreamer: командата не е открита
testMPEG2TransportStreamer: 命令找不到
testMPEG2TransportStreamer: コマンドが見つかりません