QCP (PureVoice QCELP) audio speeds up and truncates
I made a bunch of voice recordings years ago on my Sanyo feature phone and they're stored as QCP files. VLC 1.1 has trouble playing some of these on both Windows (Vista 32-bit) and Linux (Kubuntu 11.04 64-bit):
-
The audio speeds up (pitch increases) in certain parts. If I pause and play (e.g. press space bar twice) the pitch stays correct. Someone else reports "the audio speeds up and slows down at random" in the forum thread http://forum.videolan.org/viewtopic.php?f=14&t=83000
-
The audio stops playing early.
I downloaded the PureVoice SDK from Qualcomm and VLC plays the short PVsample.qcp file from at the right pitch, but it stops playing early ("This is Qualcom's PureVoice..." should continue to say "... file".)