Quote:
Originally Posted by Andrew Mottl  @Neil: Just a short question - I think I remember you recommending to indeed ONLY use 16 bit dithered files, as some cheap DVD players just trancate (drop) the last 8 bits when receiving 24bit audio. What made you change your mind? Any new info on the topic?
Thanks in advance for sharing! |
Andrew.
That is the recommendation for LPCM audio. With AC3/Dolby Digital, the recommendation is to use 24-bit files as it is a perceptual process & it just plain works better.
With LPCM, although up to 24/96 is optionally supported there are many players that do not output this. One of the more recent examples is the (expensive) upscaling Cambridge Audio 540MkII Azur unit. Whilst the picture quality is truly exceptional, it's LPCM output is 16-bit only at up to 96KHz, which is pointless given 24/48 is actually (IMSHO) higher resolution than 16/96 is.
The rule of thumb is essentially that unless there is a firmware option to set that states 24-bit output, or it specifically states it in the manual, then it is truncated to 16 bits. Sadly, this is far too common. Blame CD compatibility if you like, but it's in reality down to lazy firmware coding.
@ danijel.
BeSweet is a reverse engineered hack. It cannot reliably produce properly DVD compliant output. Period. This is *not* free technology, it is licensed.
And to be brutally honest with you, if you have no idea what the Dolby Logo licensing is then you should not be creating DVD Video discs for sale & replication.
And you should not legally be using any mention of Dolby Digital on your packaging either.
Go read all about it at Dolby Labs website. You are looking for the TMA agreements. I will not give links, consider it a research job that
should have already been done
@jesse.
I also use the Nuendo DDE (This is actually covered under the Dolby Labs licensing so you are eligible for a TMA as well) and believe the issue may be a setting in your encoder or a need for an update as there have been issues lately.
What version are you using - is it the latest in N4,. or an earlier build in N3?
I ask as I have created many AC3 files and never had a single issue with any one of them yet (including the rare occasions where I deliver for someone else to author in Maestro, Scenarist etc. As DVDSP is not commonly seen by me, it is hard to say - but I would be very surprised if one of my DD files had *not* been imported to it somewhere along the line, (although it is a poor version of what was Maestro after Apple ballsed it up when they took over Spruce), and to re-iterate - you certainly should *not* be using nasty hack encoders.
Don't know about this new Codec either - but what I will certainly do is find someone with DVDSP on an Intel Mac & send them an AC3 from my DDE to see what we see.
I recommend trying the very latest update at
Dolby Digital Encoder :: Steinberg Media Technologies GmbH :: www.steinberg.net