The little icon they show between "DVD Video" and the words "PCM Stereo" is Dolby's trademarked symbol for Dolby Digital discrete 5.1. Or perhaps Dolby's patent licence has expired or is being challenged.īut I don't know for sure and that's why I'm asking if anyone else knows anything about it.
DOLBY TM AC3 CODEC SOFTWARE
And if DTS provides better audio than Dolby Digital, it would make sense to go with DTS.īut as far as now having neither DTS 5.1 or Dolby Digital and instead a generic "5.1 surround" track, I'm guessing that perhaps Dolby only receives royalties from the hardware manufacturers and the reason it has always been logo'd as "Dolby Digital" on the software was that "Dolby" was some sort of prestige, recognizable, added value item and now after so many years, DVD manufacturers ( like Rush's ) don't feel they need the "prestige" of providing genuine "Dolby" surround, when their generic "5.1 surround" does the same job and is in fact decoded by Dolby circuitry anyway. And it's understandable that both DTS and Dolby digital encoding isn't necessary as it's redundant. I imagine the PCM track covers the backward compatibility issue. this is for backward compatability with older players who might not support dts or higher bitrates. I was under the impression that it was a dvd standard to include a dolby surround (2 channel) on all discs.
DOLBY TM AC3 CODEC MOVIE
I'm wondering if we'll start seeing DVD non-music movie videos appearing without any mention of Dolby yet containing a "5.1 surround" track which uses the Dolby hardware decoder. This appears to be either wrong, or no longer the case. I'd always assumed that Dolby insisted their logo appear if any form of Dolby encoding was offered on a disc. From the multitude of dolby logos I've seen on past DVDs, it just seemed strange that dolby would be gone completely from a sample of 3 new releases and especially strange that "5.1 surround" would replace Dolby's logo on the Rush DVD. Whichever Dolby we're talking about, none of these 3 DVDs (which yes, are music videos which would explain PCM being standard), mentions dolby anywhere on them. It has "5.1 surround" which when played, lights up as Dolby 3/2 on my receiver. I never said Rush had a DD 5.1 track however.
Yes, in my first post I mentioned Rush having a DTS track but I corrected that a couple of posts later when I double checked and added Queen's DVD to the list. And yes, I have used the term "Dolby surround" eroniously when my concern is simply the fact that the "Dolby" logo doesn't appear anywhere.
I do know the difference between Dolby and DTS. You sound a little confused about the difference between Dolby Surround, Dolby Digital, and DTS, particularly because in your original post you claim your Rush DVD has a DTS track, and then later on you post that it has a DD 5.1 track instead.
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