UPDATE: For whatever reason, only one set of logs was being put into the DVDFab9 folder and then subsequent logs were disabled and when I enabled them were defaulted to the DVDFab folder instead. Anyway, the log is attached, but I believe I found the issue with DVDFab.
The imput was an already decrypted ISO of the movie "RED 2." This movie has what seems to be a somewhat irregular use of an opening studio credit title that is inserted as the first piece of the playlist (674). This opening credit piece of the playlist has regular 640 kbps DD 5.1 audio, while the other pieces, which are truly the main movie have the DTS audio. So, it seems that DVDFab analyzes the first piece with the regular DD 5.1 audio and therefore doesn't even try to convert the DTS to DD, presumably because it believe the whole movie has the same audio format as the studio credit piece.
After witnessing how the "remove HD Audio" and "convert DTS to DD" options work (correctly) on other movies, I am certain that DVDFab is not even attempting to convert the DTS on this movie. On the movies where it works successfully, I can watch the compression ratio change and the starting movie size decrease as I select these options in the Advanced Options dialog. On this title this does not happen, which tells me DVDFab has already decided that this movie does not have DTS audio to convert.
RECOMMENDATION: on playlists with multiple titles chained together, have DVDFab scan each and every playlist to verify the audio format. I suppose this should also be done for video, in the event that different video formats are changed together, i.e. DVD resolution MPEG2 and BluRay resolution MPEG4.
Regards,
Kevin Fritz
