On Wed, Dec 19, 2018 at 10:24:29 -0800, Rene Claus wrote: > + if (ctx->sharpness >= 0) Can this ever be untrue? Because: > + { "sharpness", "Sharpness", OFFSET(sharpness), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 7, VE}, ^^^^^^^^^^^^^^^ Moritz