DVD playback speed wrong - is this a PAL 4% speedup issue?
I purchased this DVD from Amazon.com several years ago - but one thing I noticed when playing this movie DVD is that all the music sounds off-key (about one semitone sharp) [1] [2]. I tried playing it at 95% speed [3], after which all the music sounded about right [4]. Might this be caused by the PAL 4% speedup issue (http://www.michaeldvd.com.au/articles/PALSpeedUp/PALSpeedUp.asp)?
For the record, I live in the U.S. I'm unsure as to which region this DVD is encoded (likely Region 1). Thanks in advance for any discussion.
[1] I seem to have very good relative (almost absolute) pitch. Not that I wish to brag - or that even this is something to brag about, but more like a curse as I can notice quite easily (and sometimes get annoyed) when music sounds "out of key".
[2] As an example, the trombone solo in Mahler's 3rd Symphony (near the beginning of the movie) sounds as if it were played in D# minor instead of D minor. I do realize that some orchestras (including The Concertgebouw performing here) tune sharp, but nowhere near a whole semitone!
[3] I watch DVDs on my computer using software that can speed up or slow down the playback speed of the movie.
[4] Slowing down all pitches one semitone would require a playback speed of 94.387%, but even my ears wouldn't be able to tell the difference in pitch between that and 95%.