tsstamp: 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/tsstamp - from package: opencaster

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