About the process to create a Blu-ray and related concerns

[eneim]

I don't know if this question is stupid or not.

What I want to know is: after the mastering process of a movie (hope that you know what I mean), for example - editing by Final Cut, what will they do next, and how a Blu-ray comes out?

The reason I want to know is: if we now have x264, which is a powerful encoder, free and it can provide almost transparent image quality with the source Video stream, why don't they use x264 to create Blu-ray's content to reduce the size. Actually, I have seen a mediainfo log that informed a Blu-ray whose content is written by x264 "some where".

Thanks.

[Guest]

Some commercial blu-ray disks do in fact use x264 for AVC encoding, e.g., Criterion Collection. Others do not, possibly because the encoder is part of the authoring suite and is proprietary. Anyway, most disks in fact use AVC while some use VC-1 or MPEG-2.