tcextract: 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/tcextract - from package: transcode

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

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