No difference (ahem) I think. The quality (.. cough.. cough) depends entirely on the (Ahh Choo !!) amount of data encrypted. More detail imagery will (Sneeeze... ) have bigger data to store. Hence (** fart **) the fact that its (Ptttui.. )BDR or BD source does not (uwek!!) matter .

Hope it (...cough... ah ptui !) helps.