Ask questions to BD authoring and compression insider "2themax"

[McBain]

Originally Posted by oppopioneer

I'm always interested in seeing how far and agressive they push the boundaries. I'd love to see a 192khz/32 bit LPCM on one of Pioneer's 400GB and 500GB bd in development.

As it stands today, Pioneer's 400/500 GB discs are just laboratory experiments.

[Ray_Rogers]

Would very long titles such as:
The Lord of the Rings Trilogy Extended Editions
Lawrence of Arabia
Dances with Wolves (227m)
BEN HUR
Schindler's List
Cleopatra
War and Peace

And various other longer running time features be more feasible to put onto BD100s for the best compression bitrates?

[FlipperWasIrish]

Originally Posted by Ray_Rogers

Would very long titles such as:
The Lord of the Rings Trilogy Extended Editions
Lawrence of Arabia
Dances with Wolves (227m)
BEN HUR
Schindler's List
Cleopatra
War and Peace

And various other longer running time features be more feasible to put onto BD100s for the best compression bitrates?

Read post #280 to understand why it's not feasible.

[2themax]

Originally Posted by Ray_Rogers

Sorry I prefer getting the information from personally more reliable sources compared to them. My own opinion of course which none of you care.

You really shouldn't take every chance you have to dis the guys at the Bits. They are reliable source of info.

But, to answer your question. BD100 won't be a consumer format. Anything beyond two layers in mass replication is a nightmare. Most of these would work on BD50 anyways. Take Dances with Wolves as an example. If the feature disc had nothing but a menu and the movie with one lossless track and a couple of subtitle tracks, the video bitrate would be in the low 20's. With the encoder enhancements I've personally seen, that is not going to ruin the video presentation. And if it does, the feature would be split on 2 BD50's.

[DaViD Boulet]

Originally Posted by Biggiesized

You can disable dialnorm in the encoders. There is no point in using LPCM anymore.

Yes, but if the encoding engineer failes to disable it because (like 99% of the time) he just leaves the Dolby encoder defaults alone which already have a DN setting turned on, there's no way on the playback side to disable it for in-spec consumer gear.

Now... if Dolby would allow the consumer to disable DN upon playback, I'd have no problem with TrueHD versus any other "lossless" delivery algorithm.

[PeterTHX]

Originally Posted by DaViD Boulet

Yes, but if the encoding engineer failes to disable it because (like 99% of the time) he just leaves the Dolby encoder defaults alone which already have a DN setting turned on, there's no way on the playback side to disable it for in-spec consumer gear.

Now... if Dolby would allow the consumer to disable DN upon playback, I'd have no problem with TrueHD versus any other "lossless" delivery algorithm.

Sigh. DaViD, you're my friend but it's time for an intervention on this issue.

It's been proven time & again DialNorm has no real world effect on playback quality, no matter what theoretical digital manipulation you think is being done.

Now if PCM & DTS-HD MA had DRC so I can watch a BD at decent volume 24/7 without waking the kids/neighbors...

[DaViD Boulet]

Originally Posted by PeterTHX

Sigh. DaViD, you're my friend but it's time for an intervention on this issue.

It's been proven time & again DialNorm has no real world effect on playback quality, no matter what theoretical digital manipulation you think is being done.

Digital attenuation isn't "theoretical manipulation", it's actual recalculation of the waveform. With good algorithms the process can be relatively transparent. But bad digital volume can also sound on-par with bad sample rate conversion... just listen to the digital volume adjustment in the software for many music-CD applications for burning CDs.

For those who prefer to let the original bits make their way to the d/a converter... why the resistence to a pass-through that would bypass digital attenuation?

Now if PCM & DTS-HD MA had DRC so I can watch a BD at decent volume 24/7 without waking the kids/neighbors...

Just get a decoder that provides dynamic-range compression for late-night listening regardless of source signal.

[PeterTHX]

Originally Posted by DaViD Boulet

Just get a decoder that provides dynamic-range compression for late-night listening regardless of source signal.

Sure, you have $2500 to give me?

[DaViD Boulet]

Originally Posted by PeterTHX

Sure, you have $2500 to give me?

You can give me $2500 for a professional-grade decoder to bypass DN on Dolby tracks and I'll give you $2500 for a processor that applies dynamic-range compression for night time viewing for all sources. We'll both be happy.

No Comments........

[yellowcakeuf6]

Is this thread still open to questions?

[FrontierDK]

Hi there "2thyemax", and thank you for taking the time to share your knowledge and work with us :-)

I'm new in this blu-ray arena, so pardon me if I'm asking a silly question.

Before I buy something new, I always check the net for info about the product and the technology. And, if possible, I check out the support options and people available before purchase - saves me a lot of time and money from time to time.

When looking into blu-ray authoring, I'm stumbled over the small amount of information available. I've checked user manuals for Scenarist, Sony's DVD DoStudio and DVD architect etc., and all of them have a simple walk-through a simple authoring - and the amount of information is not that much different than the amount we give our secretary - "click there, click there and then it should work" - while she has no idea why something happens and when.

Books
There's only been written 2 books about bluray, and one of them doesn't even cover HDMV - and the other is very sparse. The publicly available documents from the blu-ray association is no better than the manual you'll find in the glove compartment of an old car - it will tell you that there's a radio and the max. tire pressure...and then it stops there.

My question...
Where does one go for in-depth knowledge about blu-ray? From reading the forums, it seems that some people are very sharp about authoring, but a source of their knowledge is never revealed...