yuvcorrect: 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/yuvcorrect - from package: mjpegtools

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

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