Hi all,
To solve some long-running problems with verification failures of SMPTE DCPs (made by DCP-o-matic) with some distributors, the new candidate release 2.16.51 has a fairly significant change to its audio writing. In SMPTE mode it will now write 16 channels of audio in all cases.
It would be great to hear of any successes or failures of DCPs made using 2.16.51.
Thanks!
Carl
New version test help
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jdent02
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Re: New version test help
Is it just for 7.1 tracks or across the board? I just checked a trailer for "65" in 5.1 and it only had a six channel audio MXF
EDIT: the 7.1 track for the Super Mario trailer was a full 16 channels.
EDIT: the 7.1 track for the Super Mario trailer was a full 16 channels.
Last edited by jdent02 on Fri Mar 31, 2023 1:29 pm, edited 1 time in total.
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carl
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Re: New version test help
This was in SMPTE mode?
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jdent02
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carl
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Re: New version test help
Just to be clear, these are trailers you made with DCP-o-matic?
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jdent02
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Re: New version test help
No, these are official trailers from Deluxe.
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jdent02
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carl
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Re: New version test help
Ah right. My question was more about whether new DCPs made with DCP-o-matic work.
It is possible indeed to make SMPTE DCPs with fewer channels. But to do that, as far as I can see, you need to choose whether or not to include all the new SMPTE metadata (audio subdescriptors and so on). If you omit that, it seems fine to have 6 channel MXFs.
At the moment I'm inclined to say that having an option for this in DCP-o-matic is confusing, so it now always writes the full metadata and 16-channel MXFs.
It is possible indeed to make SMPTE DCPs with fewer channels. But to do that, as far as I can see, you need to choose whether or not to include all the new SMPTE metadata (audio subdescriptors and so on). If you omit that, it seems fine to have 6 channel MXFs.
At the moment I'm inclined to say that having an option for this in DCP-o-matic is confusing, so it now always writes the full metadata and 16-channel MXFs.
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jdent02
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Re: New version test help
Gotcha. Thanks for the clarification
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StephW999
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Re: New version test help
Hi Carl,
If DOM produce a audio mxf with 16 tracks, then the "cpl-meta:MainSoundConfiguration" field must have 16 symbols. Unused or silent tracks should have the hyphen symbol
Exemple : 51/L,R,C,LFE,Ls,Rs,-,-,-,-,-,-,-,-,-,- (for 5.1)
71/L,R,C,LFE,Lss,Rss,-,-,-,-,Lrs,Rrs,-,-,-,- (for 7.1 DS)
But version test 2.16.51 produce this string : 51/L,R,C,LFE,Ls,Rs.
Today Most 5.1 movies are made with 8 tracks and 7.1 with 16 tracks.( Including Deluxe)
If DOM produce a audio mxf with 16 tracks, then the "cpl-meta:MainSoundConfiguration" field must have 16 symbols. Unused or silent tracks should have the hyphen symbol
Exemple : 51/L,R,C,LFE,Ls,Rs,-,-,-,-,-,-,-,-,-,- (for 5.1)
71/L,R,C,LFE,Lss,Rss,-,-,-,-,Lrs,Rrs,-,-,-,- (for 7.1 DS)
But version test 2.16.51 produce this string : 51/L,R,C,LFE,Ls,Rs.
Today Most 5.1 movies are made with 8 tracks and 7.1 with 16 tracks.( Including Deluxe)