Blu-ray to DVD: problem with field order?
Posted: Mon Jan 03, 2011 11:37 am
I wonder if there's maybe a problem with the field order in the created MPEG2 stream. E.g. if a created DVD is played in MPC HC, there are deinterlacer artefacts while there shouldn't be any.
So I tried to load the created VOBs in DGMPGDec and used the preview mode with single step playback. While the progressive flag is set (field order: bottom), obviously the wrong half-frames are combined, as the preview shows heavy interlacing.
It's most interesting though that there is no interlacing whatsoever in the first VOB which contains the menu. Even though the rendered video therein is the same as in the first real movie VOB and the progressive/field settings are the same, only the movie VOB shows the interlacing issue.
I would suspect that maybe the field order is swapped in the MPEG2 stream created from the movie, but not in the one rendered for the menu.
So I tried to load the created VOBs in DGMPGDec and used the preview mode with single step playback. While the progressive flag is set (field order: bottom), obviously the wrong half-frames are combined, as the preview shows heavy interlacing.
It's most interesting though that there is no interlacing whatsoever in the first VOB which contains the menu. Even though the rendered video therein is the same as in the first real movie VOB and the progressive/field settings are the same, only the movie VOB shows the interlacing issue.
I would suspect that maybe the field order is swapped in the MPEG2 stream created from the movie, but not in the one rendered for the menu.