Are all these 20+ year old movies being sold real Blu-Ray quality? Even the ones that were filmed few years ago just before the HD craze came along. What I mean is 20 years ago there was no such thing as high definition, so how are these movies all of a sudden in HD now? Are they converted at the factory to show HD quality or were they always on HD film when made but since we had no technology back then to to show its true definition they were scaled down to VHS quality.