Hi everybody...
I benchmarked the Notch Matrix against the IntraShifted Matrix and found some interesting results, which I would like to have explained and confirmed, especially by kwag...
Sample used was a part from LOTR II. Dark Scene with lots of plain surfaces, but also a face closeup and some High Action Scenes in the end... Script used was a simple Bicubic Resize script, no filters...
Compressibility:
KVCD Notch Matrix : 11.646.980 Bytes
Intra Shifted Matrix : 10.541.060 Bytes
That's a difference of 1,1 MB for a 1 minute sample
Quality :
I took 3 snapshots from the same frames with VDubMod from each File and compared them.
1. DCT Blocks : Notch Matrix looks a lot better here, although far from perfect, but that's a TMPGEnc issue I'm sure. The surfaces look more flat with the notch matrix and more "unstable" with the IntraShifted...
Detail : Hard to explain. In the 3 Snapshots I took as far as Details were concerend the differences were minimal. Slight advantages to the Notch Matrix in my eyes.
High Action : Didn't see any differences here after watching the clip 10 times in a row. Might be that I'm just too tired.
Q-Curve given by Bitrate viewer.
Notch Matrix: Average: 3.32 / Peak : 4.04
IntraShifted Matrix : Average: 3.29 / Peak: 3.52
That's a surprise to me. Notice the Peak value of the Notch compared to the one of the Intra Shifted Matrix. Well it's hard to interpret these tests in my eyes. Go ahead and make tests for yourself and tell me what you guys think!