Audio Issue

[big44g]

I am hoping to get some direction on what me be causing my audio passthrough issue. I have a brand new Intel NUC DCCP847DYE connected to a Denon AVR-E300 then to my Samsung TV by HDMI This setup worked well with my raspberry pi. I got the NUC yesterday; installed the memory, mSATA card. updated the NUC firmware and installed Openelec 5. Setup Openelec with passthrough enabled and I can not get it to pass Dolby Digital audio to my Denon. I am able to watch and hear my movies but they are all in two channel sound instead of 5.1. My Denon shows the PCM indicator and PLII 2 instead of Dolby Digital. I was not sure what log files would be helpful so I included them all in my drop dox account; https://www.dropbox.com/sh/qe7f9dgojri9y...zgFfa?dl=0

Thanks

[ALG]

In system settings you may need to go to the user mode and change it to expert then you should have the option to indicate what your receiver is capable of playing (DTS AC3 etc) otherwise it transcodes it to PCM

Also make sure you've selected 5.1

[big44g]

In Settings, System, Audio Output i have selected "Enable Passthrough" and "Dolby Digital (AC3) capable receiver." For the "Number of channels" I have had selected 2. and have changed it to 5.1 with no change in results. It was my understanding that the "Number of Channels" does not affect passthrough.

[dkdkdk]

Do you have the right audio mode selected on your AVR for this? Shouldn´t be something like "PCM Multichannel" or so?

[big44g]

Yes I have checked my Denon. I did some testing, I have a Raspberry Pi that works great with 4.2.1. I did a clean install of 5.0.0 on th ePi and I have the same problem, no AC3 passthrough. Back to clean Install with 4.2.1 on the Pi and I get AC3 passthrough. I also tried a clean install of 4.2.1 and then 5.0.0 on my new Intel NUC and I cannot get AC3 passthrough. Anyone have any ideas of where I need to go looking or do

Thanks

[big44g]

Below is a part of my KODI.log , I am about to ask a dumb question. How does the audio stream get selected during playback? This video has two streams AAC and AC3. It looks like the AAC audio is selected and not pass-through AC3. I have another dumb question, what is codec id:86018?

18:14:03 T:140669133756160 NOTICE: Opening stream: 0 source: 256
18:14:03 T:140669133756160 NOTICE: Creating video codec with codec id: 28
18:14:03 T:140669133756160 NOTICE: CDVDVideoCodecFFmpeg::Open() Using codec: H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
18:14:03 T:140669133756160 NOTICE: Creating video thread
18:14:03 T:140669133756160 NOTICE: Opening stream: 1 source: 256
18:14:03 T:140669133756160 NOTICE: Finding audio codec for: 86018
18:14:03 T:140669167326976 NOTICE: Thread DVDPlayerVideo start, auto delete: false
18:14:03 T:140669167326976 NOTICE: running thread: video_thread
18:14:03 T:140669133756160 NOTICE: Creating audio thread
18:14:03 T:140669133756160 NOTICE: Opening stream: 4 source: 256
18:14:03 T:140669100197632 NOTICE: Thread DVDPlayerAudio start, auto delete: false
18:14:03 T:140669100197632 NOTICE: running thread: CDVDPlayerAudio:rocess()
18:14:03 T:140669100197632 NOTICE: Creating audio stream (codec id: 86018, channels: 2, sample rate: 48000, no pass-through)
18:14:03 T:140669150541568 NOTICE: Thread Vaapi-Output start, auto delete: false

Thanks Gary

[big44g]

Anyone? Based on my week of research I will assume its an intel firmware issue?

[Gizmo81]

Hi, I have more or less the same Problem with my Pi and openelec 5.
Audio drop-outs to my Onkyo everywhere, not only with a running Video.
On my Onkyo I can see that it searchs for Audio Signal and Video still works fine.
I'm running it with Audio passthrough and "Adjust display refresh rate to match video"
I downgraded to 4.2.1 and everything works fine again.

[Zymac]

http://lmgtfy.com/?q=kodi+select+audio+stream&l=1

[big44g]

OK, I will report what I have found out so far of those having issues with passthrough AC3. I am beginning to think its a playback issue with openelec and handbrake encoded mp4 files. I have three system; Openelec on Raspberry Pi and Intel NUC, and an ATV3. Under Gotham my handbrake mp4 files will pass AC3 on to my receiver from the Pi but not from the NUC (with Gotham). Under KODI no AC3 passthrough to my receiver from the Pi or NUC. Same handbrake mp4 files pass AC3 audio to my receiver from my ATV3. I also created some test files with MakeMKV with AC3 and DTS for the NUC which will pass AC3 and DTS no problem.