[AppleTV2] HOW-TO to enable AC3 and DTS output for Apple TV 2

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Sdpbc Offline
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Post: #241
Yup (well, 7.1 but I believe I've also tried 5.1) ... here you go ...

http://pastebin.com/XegP0z5E

Actually, they are on 5.1..
(This post was last modified: 2012-03-18 23:22 by Sdpbc.)
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Memphiz Offline
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Post: #242
you get 2.0pcm because thats what the video you try to watch has as audio track. I don't think that any youtube video has an ac3 or dts 5.1 audio track. They all are stereo only. Better try a dvdrip or something else with 5.1 sound...

AppleTV2/iPhone/iPod: HowTo find debug logs and everything else which the devs like so much: click here
HowTo setup NFS for XBMC: Wiki NFS
HowTo configure avahi (zeroconf): Wiki Avahi
READ THE IOS FAQ!: iOS FAQ
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Sdpbc Offline
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Post: #243
What about something like this?

http://www.youtube.com/watch?v=UtXJ8tQnh...re=related

Wouldn't that be a 5.1 DTS-MA stream? Comes through as PCM 2.0 as well. Haven't ripped any DVD's as of yet. Just streaming via the various video add-on's available and all seem to come through as PCM 2.0.
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deanmv Offline
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Post: #244
All YouTube is scaled down to stereo. Download and play one of these: http://www.demo-world.eu/trailers/high-d...ailers.php

Set Up
Raspberry Pi running Raspbmc - XBMC 12.2
40" Samsung ES6800 LED Smart 3D 1080P TV
Onkyo HTS3405 5.1 DD True HD and DTS-HD Surround Sound
ReadyNAS Duo with 4TB (2 x 2TB X-RAID) Western Digital Caviar Green using NFS
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Sdpbc Offline
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Post: #245
Thanks, can these be downloaded and run straight out of a directory on the ATV2?
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deanmv Offline
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Post: #246
(2012-03-21 02:40)Sdpbc Wrote:  Thanks, can these be downloaded and run straight out of a directory on the ATV2?

Yeah where it says "Part" click on the number or numbers and download them (they will be zipped) then put them wherever your media is normally stored for xbmc and go to that folder via file mode and you can play it. The video might stutter in some of them (mostly the lossless 7.1 ones) but the audio is proper dts/dd 5.1. Hope they help!

Set Up
Raspberry Pi running Raspbmc - XBMC 12.2
40" Samsung ES6800 LED Smart 3D 1080P TV
Onkyo HTS3405 5.1 DD True HD and DTS-HD Surround Sound
ReadyNAS Duo with 4TB (2 x 2TB X-RAID) Western Digital Caviar Green using NFS
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VonMagnum Offline
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Post: #247
Can anyone tell me if Apple TV 2 can pass a DTS Audio CD file (i.e. 44.1kHz) with XBMC? It seems the Apple TV 2 upsamples all 44.1kHz signals (including CD and therefore DTS CD) to 48kHz, thus destroying the proper DTS signal and not allowing it to play back except as static (whereas my two 1st Gen Apple TV units pass DTS Audio CD rips (as WAV or Apple Lossless encapsulated) through the AppleTV just fine.

What hasn't been clear to me is whether this is an actual hardware limitation because of some crappy chip it uses, a driver/firmware issue (that won't allow it to output a 44.1kHz signal directly even if the hardware supports it) or just a software issue (i.e. Apple's software is set to up-convert, but perhaps XBMC can output a proper 44.1kHz signal)Confused

If not, it's a real bummer because then I have to keep additional hardware around to play my DTS music (or go back to using the actual CDs) if I want to upgrade to newer AppleTV that can handle higher bit-rates, etc.

While I like some of the newer features on the latest AppleTV (I was thinking of getting a 1080p capable ATV3 for my main home theater room, although it remains to be seen if it will be able to be jailbroken any time soon), but some things were just BETTER on the 1st Gen player (internal hard drive, bit-perfect audio output, analog audio outputs available, component video connections available and even some GUI things like stacking movies by SHOW into sub-folders and showing TV seasons inside a sub-folder of the tv show itself (ATV2 just lists each season as a single entry, making the list of tv shows unbearably long and a PITA to get to what you're looking for quickly when you have a lot of shows in your collection. Ironically, the iCloud GUI is VASTLY better with seasons changing by clicking left or right. WTF aren't they consistent?
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mazdaman Offline
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Post: #248
(2011-09-29 13:36)charlietilt Wrote:  
beddy Wrote:Did you try exiting XBMC, and going to Apple TV > Settings > Audio & Video > Audio Output and setting it to "16 bit"?

Thank you very much for your suggestion, that was the magic setting that made the whole thing work for me. I do currently still have AC3 and DTS passthrough enabled in xbmc, but after changing that output setting from AUTO to 16bit the DTC and AC3 starting working through my receiver and the static/feedback was gone.

Thanks again!

I was having a similar issue with my ATV2 and Pioneer VSX-9130TXH receiver through HDMI. No DTS, AC3 or MKV files would play audio . . . just loud clipping and static. Switch ATV2 to 16bit as you suggested and it works perfectly. My Pioneer receiver reads stereo when in the ATV2 menu and switches over to DTS once the file starts to play. Big thanks goes out to "beddy" for taking the time to post this solution.
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Sinistrate Offline
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Post: #249
Hello

I seem to recieve distorted sound when viewing some files i dd 5.1 format(ac3). For some reason some files work flawlessly, but others dont't. what I hear is the dialogue and such but with a sort of crackling. I haven't experienced this in any movies so far, just a few specific tv-shows. I've tried everything i can think of. Sound settings is in 16bit and so fourth.

Some specifications:

atv2: 5.1 software, jailbroken with Seasonpass. Optical cabel connected to reciever.
reciever yamaha htr-6030: registers dts and dolby surround. works great i general aside from the crackling on certain ac3-files

As I said the sound outputs sound. I can hear the dialogue and such but it's slitely distorted. Any ideas?

Thanks
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onekon Offline
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Post: #250
signed up to post, hope this helps you guys.

ATV2
XBMC Eden 11
Pioneer Elite SC-57
ATV2 connected to SC-57 Via HDMI ONLY

Settings
ATV2>Settings>Audio&Video>
Dolby=On
Audio out=Auto (not 16bit)

XBMC
System>Settings>System>Audio Output:
Audio Output=Optical/Coax (even though I am using HDMI and have absolutely no spdif/optical connected)
Speaker Configuration=7.1 or 5.1
Boost Volume level on downmix= Disabled
Dolby DIgital (AC3) Capable Receiver= Checked
DTS Capable Receiver= Checked

These settings work for me, if I had Audio output to HDMI it would only do Stereo PCM.
Switching to Optical/Coax (AGAIN I DONT HAVE AN OPTICAL CABLE CONNECTED, JUST PICK THIS SETTING) I get Dobly Digital where need be and like wise with DTS.

Also make sure you check your video files settings in the context menu for your video thats being played back. Make sure you pick the 5.1 track and that output is also set to optical/coax there.

I hope this helps someone out there, and if it does please post back.

God Bless
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avoops Offline
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Post: #251
About 15 pages back, someone mentioned the bitstream coming out of the ATV2 was PCM and not being interpreted by some processors as a correct DD or DTS stream. I have a bunch of equipment and have tested many configs and am stuck trying to make some things work.

2 ATV2's 5.1.1 firecore + XBMC 11

2 Meridian 561 processor/preamp
1 Marantz circa 2003 integrated amp
1 Pioneer circa '97 integrated amp

The Marantz and Pioneer pick up the multichannel streams properly, both Meridians, play static yet I've got them to display ac3 5.1 on the display they're just not getting kicked into multichannel mode. Everything else I own works flawlessly except the meridians and it's driving me nuts. I have an external audio authority box that will accept optical and output coax and that still delivers static. I've done the whole switch to 16-bit in atv and nothin but digital static. The Meridians have played everything else I've ever thrown at them but I guess they're picky about something in the bitstream.

Would love to hear ideas...
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Cranial Offline
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Post: #252
Not really an idea, but a suggestion. Put the equipment down. Drop those cables....

When the nightly builds start again for the ATV they will be incorporating the new audio engine, so it's be best to wait until then for further testing.

If I have helped you in any way, please forgive me, it was entirely accidental.
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avoops Offline
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Post: #253
(2012-06-01 10:04)Cranial Wrote:  Not really an idea, but a suggestion. Put the equipment down. Drop those cables....

When the nightly builds start again for the ATV they will be incorporating the new audio engine, so it's be best to wait until then for further testing.

That's a good suggestion. I'll hold off.

Thanks!
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HckMvfan Offline
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Post: #254
Hello,
I had several of the issues described here, but finally got AC3 and DTS working.

My settings are:

AppleTV 4.2.2 (2203) (as seen on Settings -> General -> About)
Settings -> Audio & Video -> Dolby Digital: On, Audio Output: 16 bit

XBMC 11.0 Git:20120321-14feb09
Settings -> System -> Audio output -> Audio Output: HDMI, Speaker Configuration: 5.1, Dolby Digital (AC3) capable receiver: true, DTS capable receiver: true

Worked fine for DD and DTS. Hope this help.
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tabiasdagger Offline
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Post: #255
I had this problem and tried everything listed here.... nothing worked. I then started changing settings on my receiver.

I've got a Denon AVR-1312.... this is what worked for me.

Menu > Input Setup > Input Mode > Decode Mode..... (on the Denon)

Change it from Auto to DTS, then exit the menu and go back in and change it to auto again.

This seems to somehow allow it to start decoding Dolby Digital..... but only for a while, if I leave the system sitting for a while, not playing a movie, the next time I try to play one, I get static again.

Here are my other settings

AppleTV2 with 5.0
Settings -> Audio & Video -> Dolby Digital: On, Audio Output: Auto

XBMC 11.0 Eden
Settings -> System -> Audio output -> Audio Output: HDMI, Speaker Configuration: 5.1, Dolby Digital (AC3) capable receiver: true, DTS capable receiver: true

Hope this helps someone! If anyone has any idea why this is not working after a period of time, I'd be interested to know.
(This post was last modified: 2012-06-20 07:09 by tabiasdagger.)
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