I've recently finished a theatre-mix, which I delivered as a stereo wav-file at 48 kHz/24bit. The film was shot on a RED at 4K 25 fps. Protools was also at 48 khz/25fps and everything was fine in the studio during playback and recording. Today the director had a test viewing at a local cinema and unfortunately everything sound pitched down.
At the postcompany, responsible for creating the MXF files, they've checked framerates etc and everything is runs fine at their end. I must admit I don't have any experienced with Digital Cinema Package (DCP) and MXF-files. First thing I checked was the framerate and samplerate, which are fine also.
We are a bit clueless.. What could be the problem? Could it be an issue at the cinema?
UPDATE: first of all thanks all for the responses, great to hear from you! The DCP house has checked the soundtrack again today and described it differently than the director (to add to the confusion :) But the projector at the venue is able to play 25fps files, so that's not the issue. The dcp house is researching the issue further, so for now there is not a lot I can do. I have told them that I can provide a pitched version for 24fps playback if necessary. So thanks for those tips guys, really appreciate it!
UPDATE 2: checked the new DCP file and everything was fine. except for a terribly loud hum (50Hz) in the actual screening room. technician didn't hear it but dared to guarantee that it was not a problem. yeah right. how i'd love to know how cinema routing/setup worked... i've been dissapointed so many times already :) oh and it turns out the post company made a mistake somewhere between splitting channels and rendering the audio for the mxf.