Bluray from the timeline -> very blocky!
 

I just finished editing a wedding in HDV, and burned to BD, with simple chapters
(tools/burn Disc from timeline)
I burn the created ISO file with Imageburn, the other disc with Nero.
I can play every disc on LG BD370 player, but the picture is horrible! Very blocky on a 40" full HD LCD.
Vegas8 does recompress the 25mbps HDV stream for BD?
1.5hour video takes 3-4 hour to create the ISO file.
(i use the same settings as the source video, 1440x1080i 25mbps, etc)
Even if it recompress, the size is about 20GB, as the source, so its also 25mpbs video.

I can view the source M2T video on my computer monitor, and it has absolutly no compression error or blocks! whats going on? help

hmm, it seems that everybody can make good quality BD disc..
but whats wrong with my method?