Roku 2 & Netflix 5.1 Audio

Moderators: RokuDouglas, RokuShawnS, RokuKen, RokuRyan, RokuJamesL

Roku 2 & Netflix 5.1 Audio

Postby __5 » Tue Jul 26, 2011 1:25 pm

Did anyone have yet had the chance to stream Netflix 5.1 Audio on Roku 2?
- How was the Audio quality?
- Is your AV Receiver decodes Dolby Digital (DD)?
- Is your AV Receiver decodes Dolby Digital Plus (DD+)?
- Did your AV Receiver indicate the playback format as DD or DD+?

Thanks & Good Luck w/your new DVP
__5
** Valued Community Member **
 
Posts: 1121
Joined: Tue Dec 23, 2008 7:51 pm

Re: Roku 2 & Netflix 5.1 Audio

Postby kc8pql » Tue Jul 26, 2011 1:32 pm

Roku2 Netflix 5.1 audio is DD+. Roku does not trans code, it just passes the signal though, so your receiver must be able to handle DD+.
Last edited by kc8pql on Tue Jul 26, 2011 1:43 pm, edited 1 time in total.
_______________________________________________________________________________________________________
No, I don't work for Roku.
OTA Antenna, "Netflix Player" N1000X, XDS 2100X (premature death by lightning)
Roku2 XD 3050X, Roku2 XS 3100R
User avatar
kc8pql
** Valued Community Member **
 
Posts: 8224
Joined: Fri Jan 23, 2009 3:54 pm
Location: US

Re: Roku 2 & Netflix 5.1 Audio

Postby jhanson » Tue Jul 26, 2011 1:40 pm

Do you have to use 5.1 or do they still offer stereo only?
jhanson
 
Posts: 82
Joined: Tue Dec 22, 2009 9:49 am

Re: Roku 2 & Netflix 5.1 Audio

Postby kc8pql » Tue Jul 26, 2011 1:42 pm

jhanson wrote:Do you have to use 5.1 or do they still offer stereo only?

Yes, stereo is the default.
_______________________________________________________________________________________________________
No, I don't work for Roku.
OTA Antenna, "Netflix Player" N1000X, XDS 2100X (premature death by lightning)
Roku2 XD 3050X, Roku2 XS 3100R
User avatar
kc8pql
** Valued Community Member **
 
Posts: 8224
Joined: Fri Jan 23, 2009 3:54 pm
Location: US

Re: Roku 2 & Netflix 5.1 Audio

Postby mikeyts » Thu Jul 28, 2011 3:25 pm

There's no actual "transcoding" to be done, in the sense of crunching the bits into another format. DD+ is an extension of DD (it's also known as E-AC-3) and always contains a DD5.1 (aka AC-3) core which can be extracted without modification and sent to AVRs which cannot decode DD+ (like my 5 y/o Onkyo).

I just received a Roku 2 XS this morning and connected it via HDMI and was pretty disappointed that I couldn't use the 5.1 audio available on some Netflix titles (I maintain a list of 5.1 titles in the "Official List of Netflix Watch Instantly Titles w/5.1 Sound" thread at AVS Forum). When I select 5.1 on a title my AVR thinks that it's stereo PCM and no sound emerges. Both my PS3 and Panasonic DMP-BDT110 3D BD player can extract the AC-3 core of Netflix's DD+ audio and send it to my receiver (currently, the PS3 can only do that; its Netflix player can't bitstream DD+); I've been playing the Netflix streams with 5.1 sound since day one. Surround sound is substantially more immersive for me than improved PQ from the 1080p encoding (I've been watching those since day one on the PS3 as well). Being able to handle all of the new Netflix features that the PS3 can (1080p, captioning, 5.1 audio) and also operating silently I expected the Roku 2 to become my new favorite Netflix player.

Roku really ought to include this in their PRs and other advertising, parenthetically: "Support for Netflix 5.1 audio (requires DD+ decoding receiver, cannot output DD5.1)". I'm gonna fire off messages to a couple of tech bloggers and see whether they can post warnings. Not everyone has a recent model AVR.
User avatar
mikeyts
 
Posts: 1527
Joined: Sat Mar 05, 2011 1:59 pm

Re: Roku 2 & Netflix 5.1 Audio

Postby nushmut » Fri Jul 29, 2011 11:57 am

mikeyts wrote:There's no actual "transcoding" to be done, in the sense of crunching the bits into another format. DD+ is an extension of DD (it's also known as E-AC-3) and always contains a DD5.1 (aka AC-3) core which can be extracted without modification and sent to AVRs which cannot decode DD+ (like my 5 y/o Onkyo).

I just received a Roku 2 XS this morning and connected it via HDMI and was pretty disappointed that I couldn't use the 5.1 audio available on some Netflix titles (I maintain a list of 5.1 titles in the "Official List of Netflix Watch Instantly Titles w/5.1 Sound" thread at AVS Forum). When I select 5.1 on a title my AVR thinks that it's stereo PCM and no sound emerges. Both my PS3 and Panasonic DMP-BDT110 3D BD player can extract the AC-3 core of Netflix's DD+ audio and send it to my receiver (currently, the PS3 can only do that; its Netflix player can't bitstream DD+); I've been playing the Netflix streams with 5.1 sound since day one. Surround sound is substantially more immersive for me than improved PQ from the 1080p encoding (I've been watching those since day one on the PS3 as well). Being able to handle all of the new Netflix features that the PS3 can (1080p, captioning, 5.1 audio) and also operating silently I expected the Roku 2 to become my new favorite Netflix player.

Roku really ought to include this in their PRs and other advertising, parenthetically: "Support for Netflix 5.1 audio (requires DD+ decoding receiver, cannot output DD5.1)". I'm gonna fire off messages to a couple of tech bloggers and see whether they can post warnings. Not everyone has a recent model AVR.


I agree that it would be good to mention this in the specs and documentation more explicitly. Obviously, the difference between Roku 2 and the PS3 and BD player is that the Roku simply passes the audio through, no processing or AC-3 core extraction.
Roku XDS, AppleTV 3rd Gen
15mbps on TWC, DIR-615 Router (wifi-N to Roku)
Panasonic P42ST30 HDTV & BD-85 Blu-ray Player
Onkyo HT-S5400 7.1 system

Paid services:
Netflix, Amazon Prime, Hulu+, season passes, MLB.tv, IW Browser Roksbox
nushmut
 
Posts: 471
Joined: Fri Feb 11, 2011 7:31 pm
Location: Kansas City, Kansas

Re: Roku 2 & Netflix 5.1 Audio

Postby scyber » Fri Jul 29, 2011 12:40 pm

mikeyts wrote:There's no actual "transcoding" to be done, in the sense of crunching the bits into another format. DD+ is an extension of DD (it's also known as E-AC-3) and always contains a DD5.1 (aka AC-3) core which can be extracted without modification and sent to AVRs which cannot decode DD+ (like my 5 y/o Onkyo).


E-AC-3 does not always contain an AC-3 core. One of the advantages of e-ac-3 is the ability to have a 5.1 audio at a lower bitrate than ac-3. This is likely why netflix is using it instead of ac-3. If it contained the ac-3 core, there would be no bitrate advantage.
scyber
 
Posts: 1296
Joined: Mon Dec 29, 2008 8:51 am

Re: Roku 2 & Netflix 5.1 Audio

Postby GregBe » Fri Jul 29, 2011 12:45 pm

scyber wrote:
mikeyts wrote:There's no actual "transcoding" to be done, in the sense of crunching the bits into another format. DD+ is an extension of DD (it's also known as E-AC-3) and always contains a DD5.1 (aka AC-3) core which can be extracted without modification and sent to AVRs which cannot decode DD+ (like my 5 y/o Onkyo).


E-AC-3 does not always contain an AC-3 core. One of the advantages of e-ac-3 is the ability to have a 5.1 audio at a lower bitrate than ac-3. This is likely why netflix is using it instead of ac-3. If it contained the ac-3 core, there would be no bitrate advantage.


Interesting...didn't know that. Makes sense. I hope we see more titles in 5.1 in the future.
GregBe
 
Posts: 87
Joined: Fri Jun 03, 2011 12:59 pm

Re: Roku 2 & Netflix 5.1 Audio

Postby aaronwt » Fri Jul 29, 2011 1:40 pm

But if it only saves 75k or so, it doesn't seem like that would be worth it.
Roku 3
Roku 2 XS--Roku 2 XD
39TB unRAID1--53TB unRAID2--36TB unRAID3
aaronwt
 
Posts: 218
Joined: Wed Jul 27, 2011 1:01 pm
Location: Washington, D.C. area

Re: Roku 2 & Netflix 5.1 Audio

Postby kc8pql » Fri Jul 29, 2011 4:12 pm

aaronwt wrote:But if it only saves 75k or so, it doesn't seem like that would be worth it.

75k X 15,000,000 or so streaming customers X the number of streams delivered per year is a lot of bandwidth.
_______________________________________________________________________________________________________
No, I don't work for Roku.
OTA Antenna, "Netflix Player" N1000X, XDS 2100X (premature death by lightning)
Roku2 XD 3050X, Roku2 XS 3100R
User avatar
kc8pql
** Valued Community Member **
 
Posts: 8224
Joined: Fri Jan 23, 2009 3:54 pm
Location: US

Re: Roku 2 & Netflix 5.1 Audio

Postby ewsjr » Sat Jul 30, 2011 7:19 am

So if I understand it correctly, if you have a DD+ enabled pre/pro or receiver you will get 5.1 on Netflix streams that have it on them, but only stereo if your equipment isn't able to produce DD TruHD ? Hope that's something they can change if that's true.
ewsjr
 
Posts: 87
Joined: Tue Mar 30, 2010 7:20 pm

Re: Roku 2 & Netflix 5.1 Audio

Postby aaronwt » Sat Jul 30, 2011 7:51 am

Dolby Digital Plus. Is the Roku 2 capable of passing through Dolby True HD?

kc8pql wrote:
aaronwt wrote:But if it only saves 75k or so, it doesn't seem like that would be worth it.

75k X 15,000,000 or so streaming customers X the number of streams delivered per year is a lot of bandwidth.


If that is really going to be an issue, then they should not even offer any 1080P encodes. They should just keep it at 720P and provide 5.1 for those. That would save many, many times more bandwidth. I know I would rather have a higher bitrate 720P encode than a bit starved 1080P encode for streaming content.

VUDU used to provide 4mb/s 1080P content when they first offered HD. Then later after they offered higher bitrate 1080P HDX titles they started using 4mb/s encodes at 720P for their HD titles. It looks much better now at 720P and 4 mb/s than it used to when they were using the same bitrate for 1080P.
Roku 3
Roku 2 XS--Roku 2 XD
39TB unRAID1--53TB unRAID2--36TB unRAID3
aaronwt
 
Posts: 218
Joined: Wed Jul 27, 2011 1:01 pm
Location: Washington, D.C. area

Re: Roku 2 & Netflix 5.1 Audio

Postby TheEndless » Sat Jul 30, 2011 12:25 pm

aaronwt wrote:But if it only saves 75k or so, it doesn't seem like that would be worth it.

Where did you read that it was only a 75k savings?
My Channels: http://roku.permanence.com - Twitter: @TheEndlessDev
Instant Watch Browser (NetflixIWB), Aquarium Screensaver (AQUARIUM), MainSqueeze (MAINSQUEEZE), iTunes Podcasts (ITPC), Twitch.tv (TWITCHTV), My Channels (MYCHANNELS)
User avatar
TheEndless
** Valued Community Member **
 
Posts: 8053
Joined: Mon Oct 04, 2004 10:15 am
Location: US

Re: Roku 2 & Netflix 5.1 Audio

Postby ewsjr » Sat Jul 30, 2011 8:43 pm

aaronwt wrote:Dolby Digital Plus. Is the Roku 2 capable of passing through Dolby True HD?

kc8pql wrote:
aaronwt wrote:But if it only saves 75k or so, it doesn't seem like that would be worth it.

75k X 15,000,000 or so streaming customers X the number of streams delivered per year is a lot of bandwidth.


If that is really going to be an issue, then they should not even offer any 1080P encodes. They should just keep it at 720P and provide 5.1 for those. That would save many, many times more bandwidth. I know I would rather have a higher bitrate 720P encode than a bit starved 1080P encode for streaming content.

VUDU used to provide 4mb/s 1080P content when they first offered HD. Then later after they offered higher bitrate 1080P HDX titles they started using 4mb/s encodes at 720P for their HD titles. It looks much better now at 720P and 4 mb/s than it used to when they were using the same bitrate for 1080P.

Sorry for the mistake. I thought DD+ was shorthand for TrueHD. I didn't realize it was a whole separate audio compression. I stand corrected.
ewsjr
 
Posts: 87
Joined: Tue Mar 30, 2010 7:20 pm

Re: Roku 2 & Netflix 5.1 Audio

Postby scyber » Sat Jul 30, 2011 9:04 pm

aaronwt wrote:But if it only saves 75k or so, it doesn't seem like that would be worth it.


It's my understanding that DD+ is much more efficient that DD. I believe 5.1 is 640kbps in DD while it can be 256kbps in DD+.
scyber
 
Posts: 1296
Joined: Mon Dec 29, 2008 8:51 am


Return to Roku Streaming Player General Discussion

Who is online

Users browsing this forum: twiceover and 17 guests