Surround sound question about blu-ray - Blu-ray Forum

Rany1977 · 07-04-2008, 01:12 AM

I have a Samsung home theater system and on some blu-ray movies such as the Spiderman trilogy and other Sony movies.

Before the movie begins all five speakers are working, even on the main menu, but once I play the movie only the front three speakers and a subwoofer work.

With some movies, all five speakers work incredible. Like both national treasure movies, Rush hour 3, 30 days of night, Untraceable, the Brave One, both AVP movies. All the above movies and a whole bunch more all have surround sound on my home theater system.

The only movies that I can't get surround sound on are movies such as, the Spiderman trilogy, War, SuperBad, the other Bolyen girl.

Does anyone know why this is and how I can get it to work?

I have an LG HD DVD/BLU-RAY combo player and have it connected to my Samsung home theater system via optical digital cable.

Any help will be greatly appreciated. Thank you in advance.

crackinhedz · 07-04-2008, 01:52 AM

be sure your bluray player is set to bitstream.

Rany1977 · 07-04-2008, 01:58 AM

How do I do that?

Mr3dfx · 07-04-2008, 02:07 AM

oooo...since optical is capped at 1.5Mbs that could be part of your issue, is your reciever capable of HD audio, does the LG bitstream or does it internally decode? Also, it's possible that the movies you are trying to watch just don't have an active surround mix, like "Shoot 'em up". And make sure you're selecting the proper audio in the blu menu, in War and superbad it would be the 5.1PCM track, because opitcal can not handle the tru-HD or the DTS-MA track.

Rany1977 · 07-04-2008, 02:11 AM

What can handle true HD? I tried using a different audio formats that superbad and war had, but I still could not get the surround.

Mr3dfx · 07-04-2008, 02:14 AM

HDMI is the only connection currently that can handle the higher bitrate needed for DTS-MA, and Dolby-TruHD, So I can see what I'm looking at what is the model of the reciever, and combo player?
I know it's LG and samsung, but I need the actual models so I can get the manuals.

crackinhedz · 07-04-2008, 02:16 AM

in a nutshell, set the Bluray player to Bitstream.

not sure of your players settings but maybe it looks like:

Dolby = Dolby
Dts = Dts

Rany1977 · 07-04-2008, 02:43 AM

I will get the model numbers for you. So if I were to use HDMI I would have to connect and HDMI cable from the home theater receiver to the bluray player?

Mr3dfx · 07-04-2008, 02:47 AM

yes exactly.

crackinhedz · 07-04-2008, 02:49 AM

Quote:

Originally Posted by Rany1977

Samsung home theater system

Im betting even if this system has hdmi inputs, that it is passthrough which will not work for HD audio.

Rany1977 · 07-04-2008, 02:53 AM

The DVD player settings It is set to primary pass through. So the movies that are working with surround are not true HD? Movies like Alien Versus Predator?

This is the DVD player that I have:

http://us.lge.com/SuperBlu/features.html

crackinhedz · 07-04-2008, 02:56 AM

it looks to have Dolby TrueHD decoding, but you would need an HDMI capable receiver that accepts multichannel PCM.

Since you are limited to Optical, your best and only solution is to set player to Bitstream. (im trying to find the manual so I can see how this is set)

Rany1977 · 07-04-2008, 02:56 AM

And this is the home theater I have:

http://www.bestbuy.ca/catalog/prodde...5&catid=20311#

Rany1977 · 07-04-2008, 02:58 AM

The home theater is HDMI capable it's about a year old.

crackinhedz · 07-04-2008, 03:13 AM

Quote:

Originally Posted by Rany1977

And this is the home theater I have:

http://www.bestbuy.ca/catalog/prodde...5&catid=20311#

sorry that does not process multichannel Uncompressed PCM...which is why you use an Optical cable.

set your HDMI to "PCM stereo" and Optical setting to 'Primary Passthrough'.

The one problem I see, is that no matter what, if you try to listen to a Dolby TrueHD audio track, the most you will ever get is 2.0 stereo PCM. (pg.36 user manual)

...also, im pretty confused about what "Dts Re-encode" means? never heard of this option before?

Mr3dfx · 07-04-2008, 03:20 AM

looking at your manual for your reciever, it looks like you will not be able to use Dolby-TruHD, or DTS-MA, this reciever is just not capable. I was looking for LPCM support but all I could find was on page 17, there is no listing of the HD audio or 5.1 LPCM. As for those movies working in surround, it's probably because of the lossless audio on the disks themselves.

WickyWoo · 07-04-2008, 05:19 AM

Quote:

...also, im pretty confused about what "Dts Re-encode" means? never heard of this option before?

It's a standard feature for HD DVD, it re-encoded all advanced codecs to DTS on the fly for optical ouput. I assume LG has enabled this for the Blu side as well. If that is the case you should enable this for PCM audio and Dolby THD (the resulting 1.5mbps DTS re-encode should be better than the DD 5.1 core track)

masob98 · 07-04-2008, 06:18 AM

Quote:

Originally Posted by Mr3dfx

oooo...since optical is capped at 1.5Mbs that could be part of your issue, is your reciever capable of HD audio, does the LG bitstream or does it internally decode? Also, it's possible that the movies you are trying to watch just don't have an active surround mix, like "Shoot 'em up". And make sure you're selecting the proper audio in the blu menu, in War and superbad it would be the 5.1PCM track, because opitcal can not handle the tru-HD or the DTS-MA track.

If you put it to 5.1PCM wouldn't decode to 2.1 through optical cable. Wouldn't be better to choose DTS-MA cuz you would get the core dts at least. On Spiderman Trilogy, you got TrueHD, which if your using optical cable it would decode to 5.1 dolby digital. So I dont think it has anything to do with the use of the optical cable.

crackinhedz · 07-04-2008, 06:37 AM

Quote:

Originally Posted by WickyWoo

It's a standard feature for HD DVD, it re-encoded all advanced codecs to DTS on the fly for optical ouput. I assume LG has enabled this for the Blu side as well. If that is the case you should enable this for PCM audio and Dolby THD (the resulting 1.5mbps DTS re-encode should be better than the DD 5.1 core track)

interestiing.

so would this be ideal for his setup? (optical)

Petra_Kalbrain · 07-04-2008, 06:40 AM

Quote:

Originally Posted by crackinhedz

...also, im pretty confused about what "Dts Re-encode" means? never heard of this option before?

Quote:

Originally Posted by crackinhedz

interestiing.

so would this be ideal for his setup? (optical)

WOAH! The mighty Crackinhedz has fallen!

And I always thought that you were audionipotent!!!

07-04-2008, 01:12 AM	#1
Rany1977 Junior Member Member since:Jul 2008	Surround sound question about blu-ray I have a Samsung home theater system and on some blu-ray movies such as the Spiderman trilogy and other Sony movies. Before the movie begins all five speakers are working, even on the main menu, but once I play the movie only the front three speakers and a subwoofer work. With some movies, all five speakers work incredible. Like both national treasure movies, Rush hour 3, 30 days of night, Untraceable, the Brave One, both AVP movies. All the above movies and a whole bunch more all have surround sound on my home theater system. The only movies that I can't get surround sound on are movies such as, the Spiderman trilogy, War, SuperBad, the other Bolyen girl. Does anyone know why this is and how I can get it to work? I have an LG HD DVD/BLU-RAY combo player and have it connected to my Samsung home theater system via optical digital cable. Any help will be greatly appreciated. Thank you in advance.

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07-04-2008, 01:52 AM	#2
crackinhedz Super Moderator Member since:Feb 2007 Home Theater Gallery:10 Blu-ray reviews:8 Trading Score:19	be sure your bluray player is set to bitstream.

07-04-2008, 01:58 AM	#3
Rany1977 Junior Member Member since:Jul 2008	How do I do that?

07-04-2008, 02:07 AM	#4
Mr3dfx Active Member Member since:Oct 2007 Blu-ray collection:123	oooo...since optical is capped at 1.5Mbs that could be part of your issue, is your reciever capable of HD audio, does the LG bitstream or does it internally decode? Also, it's possible that the movies you are trying to watch just don't have an active surround mix, like "Shoot 'em up". And make sure you're selecting the proper audio in the blu menu, in War and superbad it would be the 5.1PCM track, because opitcal can not handle the tru-HD or the DTS-MA track.

07-04-2008, 02:11 AM	#5
Rany1977 Junior Member Member since:Jul 2008	What can handle true HD? I tried using a different audio formats that superbad and war had, but I still could not get the surround.

07-04-2008, 02:14 AM	#6
Mr3dfx Active Member Member since:Oct 2007 Blu-ray collection:123	HDMI is the only connection currently that can handle the higher bitrate needed for DTS-MA, and Dolby-TruHD, So I can see what I'm looking at what is the model of the reciever, and combo player? I know it's LG and samsung, but I need the actual models so I can get the manuals.

07-04-2008, 02:16 AM	#7
crackinhedz Super Moderator Member since:Feb 2007 Home Theater Gallery:10 Blu-ray reviews:8 Trading Score:19	in a nutshell, set the Bluray player to Bitstream. not sure of your players settings but maybe it looks like: Dolby = Dolby Dts = Dts

07-04-2008, 02:43 AM	#8
Rany1977 Junior Member Member since:Jul 2008	I will get the model numbers for you. So if I were to use HDMI I would have to connect and HDMI cable from the home theater receiver to the bluray player?

07-04-2008, 02:47 AM	#9
Mr3dfx Active Member Member since:Oct 2007 Blu-ray collection:123	yes exactly.

07-04-2008, 02:53 AM	#11
Rany1977 Junior Member Member since:Jul 2008	The DVD player settings It is set to primary pass through. So the movies that are working with surround are not true HD? Movies like Alien Versus Predator? This is the DVD player that I have: http://us.lge.com/SuperBlu/features.html

07-04-2008, 02:56 AM	#12
crackinhedz Super Moderator Member since:Feb 2007 Home Theater Gallery:10 Blu-ray reviews:8 Trading Score:19	it looks to have Dolby TrueHD decoding, but you would need an HDMI capable receiver that accepts multichannel PCM. Since you are limited to Optical, your best and only solution is to set player to Bitstream. (im trying to find the manual so I can see how this is set)

07-04-2008, 02:58 AM	#14
Rany1977 Junior Member Member since:Jul 2008	The home theater is HDMI capable it's about a year old.

07-04-2008, 03:20 AM	#16
Mr3dfx Active Member Member since:Oct 2007 Blu-ray collection:123	looking at your manual for your reciever, it looks like you will not be able to use Dolby-TruHD, or DTS-MA, this reciever is just not capable. I was looking for LPCM support but all I could find was on page 17, there is no listing of the HD audio or 5.1 LPCM. As for those movies working in surround, it's probably because of the lossless audio on the disks themselves.

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