On 11/05/15 12:59, tim nicholson wrote: > Thanks for the confirmation that it s not ffmpeg. > >[..] In fact it is related to:- http://sourceforge.net/p/graphicsmagick/bugs/131/ and for some bizzare reason Ubuntu/Mint do not build it with 16 bit support, my SuSE box is fine... -- Tim. Key Fingerprint 38CF DB09 3ED0 F607 8B67 6CED 0C0B FC44 8B0B FC83