First post - be kind, please.

I am trying to make backups of Blu-ray movies, but since I only have access to single-layer Blu-ray blanks I am seeking ways to reduce the size of the source material.

I'm looking for an app that will do the following:

a) Take Blu-ray movie original discs, or disc images thereof, as input;

b) Allow me to cut-edit this material to remove unwanted bits (namely end credits, which will save me 10%);

c) Write this material onto a blank Blu-ray so it can be read by a standalone player just like the original movie.

It would be relatively easy for me to compress a BD-50 movie onto a BD-25 disc, but obviously I would lose quality this way.

Anybody have any suggestions? I'm basically looking for something that will do to Blu-rays what VirtualDub does to DivX/avi files.

Many thanks in advance,