The help output reports: +---- -s/--ctu <64|32|16> Maximum CU size (WxH). Default 64 -s/--max-tu-size <32|16|8|4> Maximum TU size (WxH). Default 32 +---- But there can be only one option linked to the short option "-s". -- Fun and success! Mario *LigH* Rohkrämer mailto:contact at ligh.de