Video Asylum

TVs, VCRs, DVD players, Home Theater systems and more.

Use this form to submit comments directly to the Asylum moderators for this forum. We're particularly interested in truly outstanding posts that might be added to our FAQs.
You may also use this form to provide feedback or to call attention to messages that may be in violation of our content rules.

You must login to use this feature.

Inmate Login

By default, logging in will set a session cookie that disappears when you close your browser. Clicking on the 'Remember my Moniker & Password' below will cause a permanent 'Login Cookie' to be set.

Moniker/Username: The Name that you picked or by default, your email. Forgot Moniker?	Examples "Rapper", "Bob W", "joe@aol.com".
Password:	Forgot Password?
	Remember my Moniker & Password ( What's this?)

If you don't have an Asylum Account, you can create one by clicking Here.

Our privacy policy can be reviewed by clicking Here.

Inmate Comments

From:
Your Email:
Subject:

Message Comments

Original Message

Hidef and audio/video bitrates

Posted by oscar on August 23, 2007 at 05:14:49:
I thought this post from an admittedly blu-ray advocate but with some credibility on the AVSforum might be interesting. Especially since some of the folks in this forum just might have a tiny bit of interest in audio quality for Hidef movies. I've had lingering questions concerning why HD DVD doesn't support lossless audio ? And wondered if storage capacity and audio bitrates were more the reason than studio indifference to lossless audio ? Paidgeek's opinions are not inconsistent with my own suspicions.

It starts out with a Paidgeek quote:

"To be very specific, what I am saying is that it is using lossless coding on all HD-DVD titles is not practical because it will compromise the picture. Not so on Blu-ray. Period."

Followed later in thread by some clarification:

"What I am trying to convey, (unsuccessfully so far as it generated a whole thread on one sentence) is this:

At a max rate of 25 Mbps for video, HD-DVD always has some coding artifacts. At a max rate of 40 Mbps for video Blu-ray always has some coding artifacts (regardless of title). Having 60% more bandwidth for coding a difficult scene means Blu-ray can do a better job on such a scene. This has been demonstrated in months past using Paramount titles. Having said that, when you max out video bit rate on Blu-ray, you still have 8 Mbps to work with and we can put a lossless stream in there. If you have to limit the max rate of and HD-DVD to something south of 20Mbps in order to accommodate lossless audio, sometimes you will get away with it (avoiding obvious picture break-up), and sometimes you won't. This is one of the principle reasons that so few NA HD-DVD titles attempt it and why even fewer will do so for Europe."
___
Sony Pictures BD Insider