tcmodinfo: 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/tcmodinfo - from package: transcode

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

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