CPL and UUID

Anything and everything to do with DCP-o-matic.
Post Reply
millinho
Posts: 3
Joined: Thu Jan 23, 2020 11:55 am

CPL and UUID

Post by millinho »

Hi,

I just discovered that some DCP systems like Clipster have a problem managing DCPs with the UUID in its CPL filename.
I did find the option to change the CPL name by hand - but the UUID will always be added to the end of the filename? Is there a way to remove the UUID completely? Thanks a lot

Kind regards
carl
Site Admin
Posts: 1304
Joined: Thu Nov 14, 2013 2:53 pm

Re: CPL and UUID

Post by carl »

Not at the moment. The tricky part would be to make sure that there can't be duplicated filenames in the DCP.

I added a note in the bug tracker.
Carsten
Posts: 1682
Joined: Tue Apr 15, 2014 9:11 pm
Location: Germany

Re: CPL and UUID

Post by Carsten »

millinho wrote: Thu Jan 23, 2020 12:23 pm
I just discovered that some DCP systems like Clipster have a problem managing DCPs with the UUID in its CPL filename.
Can you be more specific? As it is very common now to compose DCP file names with UUIDs (I see this daily in DCPs from major studios). Does Clipster have issues when source content/DCPs to be imported uses UUIDs in file names? May it be that only a specific way to include UUIDs in the file name causes these issues?

- Carsten
Carsten
Posts: 1682
Joined: Tue Apr 15, 2014 9:11 pm
Location: Germany

Re: CPL and UUID

Post by Carsten »

This is a DCP-o-matic CPL file name:

cpl_5df8f474-d171-4089-9fbb-1bcc3ddb286d.xml

These are CPL filenames from international mainstream commercial trailers:

CPL_98e5ae73-4a75-4749-b089-1a9ecdd8c6c9.xml (created by Clipster)

CPL_35328e64-b99d-4ae9-9366-c9ff46b88807.xml (created by EasyDCP Creator)

I don't see DCP-o-matic doing something unusual?
gunnar
Posts: 52
Joined: Tue Apr 15, 2014 1:06 am

Re: CPL and UUID

Post by gunnar »

UUID is part of the cpl filename in every commercial DCP mastering softwares like: Dolby CineAsset, EasyDCP and Clipster so I am sure if Clipster is struggling with something the UUID in the filename is not the reason for it.
millinho
Posts: 3
Joined: Thu Jan 23, 2020 11:55 am

Re: CPL and UUID

Post by millinho »

Thanks a lot for the replies :)

The DCP I created was made with an older version of the easyDCP creator - so no worries, DOM did nothing wrong, I am just trying to find out if I can use the DOM instead of the easyDCP in the future (and of course pay a decent price).

As it turns out it is possible in newer versions of the easyDCP creator (since version 3.6.2) to change the cpl title.

To be sure I talked to someone of the easyDCP technicians and he confirmed that it's becoming more often that DCPs have the movie title in the filename of the cpl.. To be honest, I find this very strange..

I talked to the person who had the Clipster problem and he confirmed that he sees the UUID of the cpl instead of the composition name. He was able to change it accordingly and offered me to come by and try to find out what the problem is.
carl wrote: Thu Jan 23, 2020 1:13 pm Not at the moment. The tricky part would be to make sure that there can't be duplicated filenames in the DCP.

I added a note in the bug tracker.
So if this all is really turns out to be true and it's possible to implement that somehow, I would be more than happy to use DOM in the future :)
I saw a cpl file which looked like this: cpl_Movietitle_EN_OV_64d379ed0f2e.xml
Carsten
Posts: 1682
Joined: Tue Apr 15, 2014 9:11 pm
Location: Germany

Re: CPL and UUID

Post by Carsten »

I think it is a bad idea to create any filename in a DCP without a UUID.

During a certain time in digital cinema history, many things were possible and common in DCPs, and sometimes, when looking at todays raw DCP files, I miss revealing file names for metadata, assets and KDMs. But I think the use of UUID is a must for reasons of file consistency.

While there are some filename length limitations to keep in mind, I think the best idea is to enable another placeholder in advanced prefs - metadata file name format to include the shortened CPL title together with a UUID. Maybe %c (compliant with asset filename format, or 'cpl name'). Or %d ('DCP name') (%n for 'name' and %t for 'title' is already taken for number of reels and asset type and could be confusing).

Occasionally, I see UUIDs for package/DCP names on servers. Usually they reveal that users did not understand the difference or used their software with some some standard settings not delivering what they'd intend to do.


- Carsten
Bildschirmfoto 2020-01-24 um 20.21.09.jpg
Bildschirmfoto 2020-01-24 um 20.21.09.jpg (52.7 KiB) Viewed 2619 times
I think, in this example the reason is that no annotation text is set in the PKL file, so, our Sony shows only the PKL UUID. Other servers may handle this in a different way. Some servers may go for PKL/Package, some browse for CPLs. There is no actual standard on how servers display content for ingest or playout.
millinho
Posts: 3
Joined: Thu Jan 23, 2020 11:55 am

Re: CPL and UUID

Post by millinho »

Ok good to hear, thank you all for the help!
Post Reply