Will this be a problem? (Layer changes) - Blu-ray Forum

Chi TownzBoy05 · 07-05-2006, 08:29 PM

As we know Dual Layer dvd pause to get the next layer.So if a Blu ray has 8 layers there will be 8 pauses correct? Or was that eliminated?

AV_Integrated · 07-05-2006, 08:31 PM

Quote:

Originally Posted by Chi TownzBoy05

As we know Dual Layer dvd pause to get the next layer.So if a Blu ray has 8 layers there will be 8 pauses correct? Or was that eliminated?

Blu-ray Disc movies may not exceed 2 layers per Blu-ray specifications.

As for a layer change pause, this should not be the case as memory buffers should read ahead on the disc and store several seconds of footage eliminating the layer change pause.

FYI: Some DVD players on the market currently do the same thing and have zero pause between layer changes. It is not a very difficult thing to do and just silly that every halfway decent DVD player doesn't incorporate a decent buffer to accomplish this.

Shadowself · 07-05-2006, 09:08 PM

Quote:

Originally Posted by AV_Integrated

As for a layer change pause, this should not be the case as memory buffers should read ahead on the disc and store several seconds of footage eliminating the layer change pause.

FYI: Some DVD players on the market currently do the same thing and have zero pause between layer changes. It is not a very difficult thing to do and just silly that every halfway decent DVD player doesn't incorporate a decent buffer to accomplish this.

I agree.

RAM has become so inexpesive that any decent player (DVD, HD DVD, or Blu-ray) should have enough of a buffer to eliminate *any* noticeable pause. It's just a matter of having a buffer large enough to cover the bit rate (2X or the planned 4X, etc.) times the switch over time. Even at 4X and an unbelieveable 5 second switch over time this has to be less than 100 MB of RAM -- a trivial amount these days.

Thus once the pause is gone it does not matter how many layers there are (1, 2, 4, or 8).

zombie · 07-05-2006, 09:13 PM

Blu-ray disc have seemless layer changes meaning you shouldn't be able to detect when they occur.

Chi TownzBoy05 · 07-07-2006, 12:26 AM

Ok thats good to hear thanks guys.

Psiweaver · 07-18-2006, 11:54 PM

Lots of ram helps a ton.

07-05-2006, 08:29 PM	#1
Chi TownzBoy05 Junior Member Member since:Jun 2006	Will this be a problem? (Layer changes) As we know Dual Layer dvd pause to get the next layer.So if a Blu ray has 8 layers there will be 8 pauses correct? Or was that eliminated?

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07-05-2006, 09:13 PM	#4
zombie Blu-ray Guru Top contributor Member since:May 2004 Trading Score:866	Blu-ray disc have seemless layer changes meaning you shouldn't be able to detect when they occur.

07-07-2006, 12:26 AM	#5
Chi TownzBoy05 Junior Member Member since:Jun 2006	Ok thats good to hear thanks guys.

07-18-2006, 11:54 PM	#6
Psiweaver Special Member Member since:Jun 2006 Location:Los Angeles,CA	Lots of ram helps a ton.

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