testDVVideoStreamer: 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/testDVVideoStreamer - from package: livemedia-utils

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

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