AudioDelay with -83ms ???

[dominik]

You can't import footage with 23,976fps in Scenarist. You can just import MPEG2 with 29,976fps and 3:2 Pulldown-flags, if you don't want to encode the interlaced pulldown. OK. Also you are just able to move the audio-tracks on the time-axis in the TrackEditor of Scenarist in 1/29,976s-steps. So possible delays could be -33ms, -67ms, -100ms... But DVDs with 23,976fps pulldowned film often has a delay of -83ms which is two times 1/23,976s!! How is this possible?

[ultimatebilly]

Well, I can only guess here...
Since the playback speed of 29.97 and 23.976 is exactly the same (because the difference is due to fields shown several times), it could be the same to just apply a delay of -67ms in scenarist to a stream with pulldown flag.
Maybe this will then be stored as -83ms internally, when scenarist detects that the stream is 23.976 with pulldown-flag; when it is a native 29.97 stream, scenarist will store -67ms...).
Maybe the value of 1/29.97 is only shown so that you can more easily adjust the delay on a frame basis (corresponding to the frame-rate of the pulldowned stream)?
Maybe the delay is generally stored respective to frames on DVD?
I have to check what dvddemystified says about that...
But, as I said, this is only guesswork...
Another possibility:
Maybe dvd2avi is handling the delay in respect to frames?
Could you maybe try demuxing the ac3 from one of your -83ms dvds without force film?
If the delay is -67ms then, you would have detected an error in dvd2avi :D
I would try it myself, but since I live in a PAL country I have only 3 NTSC-DVDs...
I will check tonight when I'm home if one of them has a delay...