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mmeitine / google-cast-sdk

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Support AC3 Passthrough Audio #192

Closed GoogleCodeExporter closed 9 years ago

GoogleCodeExporter commented 9 years ago 
What steps will reproduce the problem?
1. Try to cast an MKV with AC3 audio

What is the expected output? What do you see instead?
expected: I can hear the audio
actual: No audio is output

What version of the product are you using? On what operating system?
The latest; Linux

Please provide any additional information below.

The Chromecast has the support for AC3 passthrough, the Netflix app clearly 
takes advantage of it, but the Chrome process running on the Chromecast seems 
incapable of doing so.

A "bug" in my mind, but since it's not listed on the Supported Codecs, I'm 
assuming this is an Enhancements.

Thanks for considering.

Original issue reported on code.google.com by cole.mickens on 7 Mar 2014 at 11:54

GoogleCodeExporter commented 9 years ago 
Same here. Really annoying not to be able to pay for movies on Google play and 
using Google chromecast and not getting 5.1 through DTS passthrough!

Original comment by YuriPetu...@gmail.com on 27 Aug 2014 at 12:22

GoogleCodeExporter commented 9 years ago 
Considering the status of this is "WontFix" how can we get google to take 
notice?

Original comment by david.ja...@gmail.com on 27 Aug 2014 at 3:59

GoogleCodeExporter commented 9 years ago 
This is ridiculous...  I feel like I just got took for $35...

Original comment by fwdk98...@gmail.com on 29 Aug 2014 at 12:09

GoogleCodeExporter commented 9 years ago 
Just adding my voice to the growing list. Why can't pass-through be supported?

Original comment by anthony....@gmail.com on 30 Aug 2014 at 2:13

GoogleCodeExporter commented 9 years ago 
Add AC3 Please

Original comment by jdgszo...@gmail.com on 1 Sep 2014 at 2:46

GoogleCodeExporter commented 9 years ago 
Add ac3 please. It's important.

Original comment by gabrygag...@gmail.com on 1 Sep 2014 at 11:17

GoogleCodeExporter commented 9 years ago 
AC3 and DTS support, please.

Original comment by diego.ar...@gmail.com on 2 Sep 2014 at 11:58

GoogleCodeExporter commented 9 years ago 
Why won't fix status! Fix a license with Dolby, I would even pay a dollar for 
it(that's what a license cost!)

Original comment by MLG.Bend...@gmail.com on 2 Sep 2014 at 9:57

GoogleCodeExporter commented 9 years ago 
Please support this feature

Original comment by ursus....@gmail.com on 7 Sep 2014 at 7:41

GoogleCodeExporter commented 9 years ago 
Please, you are Google, has to fix this!! Your products are always the best!

Original comment by car.cran...@gmail.com on 13 Sep 2014 at 2:38

GoogleCodeExporter commented 9 years ago 
Wtf, Google, are you really trying to put Chromecast on your shit products 
list, next to failures like Wave, Hangouts or G+? Add damn codec support, some 
cheap Chinese devices are already better than your device!

Original comment by traian.b...@gmail.com on 14 Sep 2014 at 9:11

GoogleCodeExporter commented 9 years ago 
As many other said, pass-through is what I'd need. My receiver will happily 
decode DTS-HD and AC3. I don't need the Chromecast to do anything fancy with it.

Original comment by jesse.houwing on 17 Sep 2014 at 10:12

GoogleCodeExporter commented 9 years ago 
Fix this.. That is really a no go in 2014..

Original comment by bEha...@gmail.com on 18 Sep 2014 at 1:54

GoogleCodeExporter commented 9 years ago 
Support for AC3 passthrough was added in the recent updated build 19084 for the 
Chromecast device.

Original comment by lnicho...@google.com on 19 Sep 2014 at 7:20

GoogleCodeExporter commented 9 years ago 
Awesome!

Original comment by ragna.ro...@gmail.com on 19 Sep 2014 at 7:24

GoogleCodeExporter commented 9 years ago 
That's definitely GREAT news. Thank you, this was much needed.

Original comment by conde.ak...@gmail.com on 19 Sep 2014 at 7:26

GoogleCodeExporter commented 9 years ago 
Great work!

Original comment by kitto7...@gmail.com on 19 Sep 2014 at 7:28

GoogleCodeExporter commented 9 years ago 
Google actually listened!? Amazing, thanks :)

Original comment by j...@casaloca.dk on 19 Sep 2014 at 7:31

GoogleCodeExporter commented 9 years ago 
and DTS?

Original comment by david.ja...@gmail.com on 19 Sep 2014 at 7:54

GoogleCodeExporter commented 9 years ago 
Thank you!

Original comment by skipmeis...@gmail.com on 19 Sep 2014 at 7:56

GoogleCodeExporter commented 9 years ago 
tremendous news. Please do yourselves a favour and make a big deal out of this, 
as it is!!!

Original comment by Mike.Gre...@gmail.com on 19 Sep 2014 at 8:07

GoogleCodeExporter commented 9 years ago 
Hurrah!

Original comment by amic...@gmail.com on 19 Sep 2014 at 8:42

GoogleCodeExporter commented 9 years ago 
Great news!

Original comment by arnaubel...@gmail.com on 19 Sep 2014 at 9:54

GoogleCodeExporter commented 9 years ago 
Awesome. So just DTS is missing...

Original comment by shorty1...@googlemail.com on 19 Sep 2014 at 11:00

GoogleCodeExporter commented 9 years ago 
Well done guys! My most requested feature for the Chromecast solved ;)

Original comment by lucaszeg...@gmail.com on 20 Sep 2014 at 3:52

GoogleCodeExporter commented 9 years ago 
Thanx!!

Original comment by msmi...@gmail.com on 20 Sep 2014 at 12:23

GoogleCodeExporter commented 9 years ago 
I suspect that the docs (here: https://developers.google.com/cast/docs/media) 
will be updated to reflect this?

Original comment by jesse.houwing on 21 Sep 2014 at 7:44

GoogleCodeExporter commented 9 years ago 
Is it actually working, guys? I'm on build 19084 and use BubbleUPNP or 
LocalCast to cast videos, but AC3 sound isn't working. Do the apps need to be 
updated or am I doing something else wrong?

Original comment by h4m7...@gmail.com on 21 Sep 2014 at 8:48

GoogleCodeExporter commented 9 years ago 
What about DTS?

Original comment by miran.ml...@gmail.com on 22 Sep 2014 at 5:36

GoogleCodeExporter commented 9 years ago 
Would be nice to add the DTS support and even uncompressed support: DTS-HD 
Master Audio and TrueHD.

Original comment by lasseman...@gmail.com on 22 Sep 2014 at 10:55

GoogleCodeExporter commented 9 years ago 
I would imagine the app in question would have to be aware that sending AC3 to 
CC is now a valid option (provided the TV or receiver can handle AC3 of course).

Original comment by j...@casaloca.dk on 23 Sep 2014 at 8:49

GoogleCodeExporter commented 9 years ago 
Thank you

Original comment by sco...@gmail.com on 23 Sep 2014 at 2:37

GoogleCodeExporter commented 9 years ago 
[deleted comment]
GoogleCodeExporter commented 9 years ago 
DTS passthrough is coming too then?

Original comment by MLG.Bend...@gmail.com on 26 Sep 2014 at 10:34

GoogleCodeExporter commented 9 years ago 
Hey there, just tried testing it with an MKV (h264 + 5.1 AC3) with Synology DS 
Video App and Plex App streaming to Chromecast from my Galaxy S3 (Android 
4.1.2). Both times I did not get 5.1 Sound, only Stereo. 

Is AC3 5.1 working for everyone else? (Build is definitely 19084)

Original comment by dominik....@gmail.com on 26 Sep 2014 at 5:39

GoogleCodeExporter commented 9 years ago 
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GoogleCodeExporter commented 9 years ago 
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GoogleCodeExporter commented 9 years ago 
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GoogleCodeExporter commented 9 years ago 
ac3 5.1 isnt workin at all for me.. (DS Video App)

Original comment by p.holt12...@gmail.com on 27 Sep 2014 at 2:18

GoogleCodeExporter commented 9 years ago 
Why would you add ac3 but not DTS...
Please...Please add DTS.

As a result of your lack of implementation of DTS, I have to bypass my 
chromecast and use my PC instead. 

I want to be able to use my chromecast as my go to device but with issues such 
as this one, I can't.

Original comment by borninma...@gmail.com on 28 Sep 2014 at 2:29

GoogleCodeExporter commented 9 years ago 
Tried to play a mkv with ac3 but still no sound. Any idea ?

Original comment by yilmazgu...@gmail.com on 28 Sep 2014 at 5:55

GoogleCodeExporter commented 9 years ago 
AC3 in mkv is not working. No sound. Sending via android apps (all).

Original comment by claudior...@gmail.com on 30 Sep 2014 at 7:14

GoogleCodeExporter commented 9 years ago 
This isn't fixed at all in my opinion?

Original comment by sven.klo...@gmail.com on 30 Sep 2014 at 9:46

GoogleCodeExporter commented 9 years ago 
Same issue for me, tested with Synology Video Station, DS Video on iOS 8, 
Chromecast and many MKV files. No sound is playing.
By the way, the passtrough option on Video Station does not help.
Used Plex server, but my NAS can not transcode video on the fly.

Google, I am disapointed, why put on the market a product which is not 
compatible with all formats ??!

Original comment by romain.d...@gmail.com on 2 Oct 2014 at 9:19

GoogleCodeExporter commented 9 years ago 
Why no passthrough for DTS? 
Wrote an App for Android and can't publish it without DTS sound because it 
streams media from a media station, which use DTS...

Original comment by profd...@gmail.com on 10 Oct 2014 at 6:38

GoogleCodeExporter commented 9 years ago 
Just a few remarks:
1- Only AC3 passthrough is supported. This means an A/V receiver is needed to 
actually decode AC3 (usually, TVs do not support AC3 passthrough).

2- Apps might have to be updated (some of these apps used to transcode AC3, 
they should now transcode only when the receiver do not support AC3 
passthrough).

3- A quick way to test the AC3 passthrough support with your setup:
 Assuming you have a web server hosting your video (e.g. YOURVIDEO.mkv), create in the same directory an HTML file which embeds your video in a media element:
<!DOCTYPE html>
<html>
<body>
<video autoplay controls>
  <source src="YOURVIDEO.mkv" type="video/webm">
  Your browser does not support the video tag.
</video>
</body>
</html>
Then in Chrome for Android open the URL referring to this html file. Then put 
the video full screen to have the cast capability. Cast to your Chromecast. 
With an A/V receiver supporting AC3 passthrough, audio should play (otherwise, 
you should get only video).

Original comment by dami...@google.com on 11 Oct 2014 at 1:42

GoogleCodeExporter commented 9 years ago 
My TV specs say that it has a Dolby Digital 5.1 decoder, but it still won't 
play audio when I cast through a chrome tab. 

http://www.lg.com/us/commercial/large-lcd-tvs/lg-32LH200C

What am I missing here, I'm not an A/V guy, having the decoder means it should 
support the passthrough yeah? Or can it not go through the HDMI encoded?

Original comment by Cam.Bar...@gmail.com on 14 Oct 2014 at 8:33

GoogleCodeExporter commented 9 years ago 
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GoogleCodeExporter commented 9 years ago 
I have a sony tv with dolby digital 5.1 decoder built-in and chromecast seems 
not working as expected, there is no sound from the tv with an mkv file with 
ac3 5.1 inside, but I tested another mkv file with AAC-LC 5.1 and it played the 
sound from the tv... what is wrong?

Original comment by ricardo...@gmail.com on 17 Oct 2014 at 6:00

GoogleCodeExporter commented 9 years ago 
This is not working for me. I have cast both mp4 and mkv test files with 6 
channel ac3 using a webpage, allcast, and local cast. There is no sound sent 
through to the tv. I have tested the files using a blueray player attached to 
the same HDMI port on the tv, and it passed the ac3 just fine - my sound bar 
displays the dolby digital symbol and correctly plays the tracks through the 
rear speakers. So I know it is not the tv or the soundbar. 

I have attached my mkv and mp4 test files. 

I also do not get a 5.1 option on the Netflix app, which doesn't bother me 
since my soundbar actually doesn't support dolby digital plus, but it makes me 
wonder if somehow my Chromecast has misdetected some capability I have somehow 
and therefore won't do the psssthrough. Ideas?

Original comment by novach...@gmail.com on 17 Oct 2014 at 6:12

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