Error Creating DCP at 25FPS

[Jaume(Dolby)]

Hi Carl,

I just developped a DCP Clip for a public commercial music presentation.
Something goes wrong and I unable to found how resolve.

SOURCE: (Standard from Post-Houses)
======
4K Picture FLAT DCI 4K at 25FPS
Audio 7.1 multifile mono WAV 24Bits 48Khz
Created at Protools Ultimate Sync 25TC

DCPoMATIC 2.16.35
=========
New DCP. Setup, 4K FLAT 25
Import Video and Separate Audio WAV

Release DCP
==========
Audio is 4% LONG (slower) than Picture

Finally I repeated the job with EasyDCP 4.0 and Qubemster Pro and it works perfectly, so the issue is not related to original content but to DCP creation, perhaps my mistake with DOM options. What I am missing?

Thanks a lot in advance,
J

[carl]

Could you attach the metadata.xml file from your project, or email it to carl@dcpomatic.com ?

[Carsten]

With separate video/audio content files (as opposed to a composite/interleaved video/audio file), DCP-o-matic needs to associate the audio to the video in order to perform 24/25 fps adaption. DCP-o-matic needs to know wether a separate audio file is referenced to a specific frame rate.

But - if you created a 25fps DCP from a 25fps source, no frame rate adaption would have to be performed. Hard to understand why DCP-o-matic should slow down the audio. You should also see this in timeline view and under the timing tab. Make sure audio play time is the same for all 7 channels and video. Maybe the project file will tell Carl more.

[carl]

Thanks for sending the files. This is an odd case!

I can't see anything in your logs to suggest that DCP-o-matic resampled the audio to account for any frame rate changes. So it's a bit of a mystery how this happened.

Perhaps you could also share the XML files from the DCP that you made (especially the CPL)? That might give some clues. As before, uploading to this thread or to carl@dcpomatic.com are both fine.