BD Rebuilder is a free tool that can 'shrink' a Blu-ray movie to BD5, BD9 or BD25, keeping all menus or Main movie only. I tested on Transformers, the main movie is 2:23 hours long, packed in 41 GB M2TS container. BD Rebuilder is set to shrink Transformers to BD25. It took 10 hours to complete on a 3GHz Quad Core system.
Tested in PS3, my first impression was: where is the Dolby TrueHD audio? since my AV Receiver only shows Dolby Digital.
Fast forward, the video quality looks "very good". But curious, I clicked the "Display" button on the PS3 remote and examine the video bit rate. On a few screens they show bit rate between 15Mbps and 25Mbps. Not bad, definitely higher than DVD bit rates which is max 9.8 Mbps.
But what is the original Transformers bit rate? And how does it really compares?
I took both discs --the original and backup-- to my PC and checked them with Nero ShowTime. Pics below, click to see hi-res image.
Transformers screenshot #1: Original Blu-ray disc vs BD Rebuilder backup (25GB). First pic is the Original, 2nd pic is the backup. Click each image to see hi-res pic. Both looks "the same" don't they? The original has 53.02 Mbps rate while the backup 24.65 Mbps. Let's try another frame.
Transformers screenshot #2: Original Blu-ray disc vs BD Rebuilder backup (25GB). Click the image to see hi-res pic. Our eyes still can't see the different? Let's zoom in the red box on Megan Fox arm:
The original (left) is smoother, and we can see blemish spots on the backup.
What do you think? What is your experience?