DCP-o-matic

Strange. I converted a test movie just recently into both mp4 and prores/mov, and neither shows that issue.In QT Player and media info, they are both shown as straight 24 fps. Which version of DCP-o-matic are you using?

- Carsten

We had similar issues before, and very often, they turned out as bad projector presets. The way to fix this is to play an 'official' setup DCP that is able to convince the operator/cinema owner to have their presets checked. If you play back your DCP with DCP-o-matic player, and there is no cutoff, ...

To complement this - Dolby servers using a CAT745 media block without NTP sync (many small cinemas without TMS) typically suffer from huge clock drifts. Easily in the range of multiple days if not continuously corrected. So, it's pretty easy to 'drop back' or forth one day.

- Carsten

These certs are valid from April 10th, and your KDMs validity window starts at April 10th as well. I remember we had a similar issue a while ago with some KDMs for Dolby servers. I guess the trouble is if you have created the certs/installed DCP-o-matic on the same day as you create your first KDM, ...

I think your KDMs are all okay technically, but the signing cert fails to comply with the KDM validity period. I have no idea currently how this can happen. Could you go to Preferences - Keys - Signing DCPs and KDMs/Advanced, then export Root/Intermediate/Leaf certs and upload them here? They are on...

From that error, there is something wrong with the validity periods of the signing certificate. First, backup your DCP-o-matic configuration. As it seems, this KDM has not been ingested, so it won't unlock the feature. How long is the KDM timeframe you set for your KDM? Which version of DCP-o-matic ...

You can find it here:

https://dcpomatic.com/manual/html/ch07.html

However, some content produces strange results, so, only use them if you can check the DCP in a proper cinema environment.

- Carsten

This is correct. If assets are encrypted, as the OV assets for your non-encrypted VF, a KDM is always needed. The cinema projector can not reuse the KDM for the OV to play the VF. KDMs are strictly for CPLs. If the CPL for a VF uses encrypted assets, there must be a KDM. Maybe this is a bug in DCP-o...

There are differences between Interop and SMPTE MXF, but not within the J2K core stream. That is, you may convert between Interop and SMPTE with DCP-o-matic, and no re-encoding is necessary. It is not allowed and not possible to create a mixed Interop/SMPTE OV/VF combo.


- Carsten

Great!

- Carsten