mp4chaps/iTunes having problems with b-frame movie duration about mp4v2 HOT 6 CLOSED

If bframes.m4v is the "clean" version before using mp4chaps then please make a 
cleaner version available that does not contain any chapters since bframes.m4v 
already contains a chapter and a different playlength of audio (00:01:00.693) 
and 
video (00:01:00.560).

upping two more files currently
bframes - only av.mp4 gets rid of the chapter track, my apologies, I didn't 
realize the preset I was using for 
encoding automatically added chapters, this cleaner file still exhibits the 
issue. Unfortunately this and every 
other single sample I could give you have different audio and video track 
lengths so I also uploaded
bframes - only v.mp4 - exhibits same issue, but the incorrect duration is ~90 
minutes when mp4chaps is used 
on it as compared to ~48 minutes for file with audio and video tracks.

Which revision of mp4v2 are you using?

I was using 158, I will try a clean checkout of 159 to confirm

No need to use 159, the result will be the same.
The reason is the recalculation of the movie timescale which seems to disturb 
iTunes.

trunk@160 contains a fix that does not recalculate movie header timescale and 
duration for video files