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PostPosted: Mon Nov 27, 2017 11:21 pm 
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Joined: Thu Jan 24, 2013 1:21 pm
Posts: 12
So CDDB/FreeDB used CD track times/counts in order to get a "fingerprint" of an individual disc, making it easy to rip your own CD and automatically fill in the proper metadata (track names, CD composer/singer, track numbers, etc.).

Is there anything like that for Blu-Ray? I mean, the mpls files that litter the
Code:
BDMV/PLAYLIST
folder have track and timecode data, so wouldn't it be possible to get a disc-specific fingerprint from those files? Given how few CDs have collisions on track length/order, it would probably be near-impossible for two Blu-Ray discs with different movies to have the same MPLS arrangement. And that's assuming you can't get the UPC/serial info from a disc, which for all I know you can.

Anyhoo, just curious to know if this is something that already exists.


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PostPosted: Tue Nov 28, 2017 2:08 am 
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Joined: Sun Jul 24, 2011 11:21 pm
Posts: 5199
There have been some efforts towards this sort of solution, but...

Lionsgate single-handedly has made it difficult at best - a single DVD or BD title can have dozens of variations, each with a unique signature, due to rotating fake playlists. Sure, there would be few collisions, but "Ender's Game" (for example) would have several dozen different entries.

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PostPosted: Sun Dec 24, 2017 9:13 pm 
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Joined: Thu Jul 28, 2016 4:18 am
Posts: 27
unless multiple versions of the disc have different disc IDs (and therefore different VUKs) then it shouldn't really be a problem.

The same CD was released with multiple different releases and gracenote/cddb handled it ok.


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