Stereo passthrough issue in L9 and Odroid C2

zanlation · February 10, 2019 at 12:41 AM

I upgraded my Odroid C2 with the latest L9 image and everything went smoothly, with the exception of some audio issues and reconnecting my bluetooth remote control (that's another story). At first I had no sound, however through some setting changes I managed to get audio for all files, with exception of those with 2.0. I have a 5.1 setup and the audio is passed through to my new AV receiver (Marantz SR6013). The only way I can get sound for 2.0 files and live tv is to tick the stereo upmixing option.

In my L8.2.5 installation I didn't have the stereo upmixing ticked and I got stereo pass through. Has anyone else found this issue with L9 and Odroid C2?

My audio settings are:

Audio Output Device: HDMI

Number of channels: 5.1

Output configuration: Best Match/b>

Stereo upmix: Enabled (only way to 2.0 audio)

Normalize levels on downmix: Disabled

Resample quality: Medium

Keep audio device alive: 1 min

Enabled passthrough: Enabled

Passthrough output device: HDMI

All audio formats are enabled

turbotomte · February 10, 2019 at 5:43 PM

I have the same problem with Odroid C2. It stopped working with the LibreELEC (Leia) 9.0.0 upgrade. I have tried a new install but it didn't help. FLAC and mp3 audio files work, but videos with stereo sound don't. Only with stereo upmix do I get any sound.

Gazhay · February 12, 2019 at 4:54 PM

Can also confirm this.

At the very least the ability to turn upmix on/off from the in movie interface is required.

viper4le · February 13, 2019 at 7:27 AM

I have a similar problem after upgrading to 9.0:
A WeTek Play 2, connected via optical out to a pioneer receiver.

AC3 and DTS passthrough enabled in the Kodi settings. AC3/DTS works, but all other audio not. Tested with TV streams from TVHeadend and other video files.
In 8.2.5 there was no problem with the following settings (it is in german, sorry):

AndrewZ · February 13, 2019 at 8:33 AM

seems to be my issue as well - no audio with AAC since 9.0 / audio settings verification

viper4le · February 14, 2019 at 8:33 AM

I tested with a fresh LE9 installation yesterday.

And there I have not the same problem(UPDATE 16.02.: that is incorrect, tested again, both have a problem with 48kHz sample rate) .

First of all the new installation sets the audio device default to "AML-M8AUDIO Analog" on my WeTek Play 2. The Box is connected via optical out to a Pioneer receiver.

I switched it to "AML-M8AUDIO, HDMI".

It was then possible to play a video file with AAC 2.0 (Details from VLC: AAC 44100Hz stereo 96kbps, 32 Bit per Sample ), mmmhh interesting.

I switched then the SD card to the upgraded LE9, problem still there.

I changed the audio device to "AML-M8AUDIO Analog", played the video with AAC 2.0 and audio was there -> cunfusion, why did I get audio on a digital output if the audio device is setup to "Analog"?

Then I started a video with DTS and the passthrough was also working. I was happy then, but unfortunately too early.

I started the video with AAC 2.0 again and now the audio was "dull", played in lower frequency and cuts every few seconds.

Further the "click" sounds in the main menu had this dull sound, too. I had to switch the audio device to bring the menu sound back to the normal sounds.

In result I can choose between 2 problems:
- no audio for stereo streams if the audio device is set to "AML-M8AUDIO, HDMI"

- corrupted audio for stereo streams if the audio device is set to "AML-M8AUDIO Analog"

Log for the "no audio" case:

Code

19:56:25.727 T:4092575664  NOTICE: VideoPlayer::OpenFile: smb://*******************.720p.mp4
19:56:25.732 T:3701764976  NOTICE: Creating InputStream
19:56:25.827 T:3701764976  NOTICE: Creating Demuxer
19:56:25.994 T:3701764976  NOTICE: Opening stream: 0 source: 256
19:56:25.995 T:3701764976  NOTICE: Display resolution ADJUST : 3840x2160 @ 50.00 - Full Screen (40) (wéight: 0.000)
19:56:26.005 T:3701764976  NOTICE: Creating video codec with codec id: 27
19:56:26.008 T:3701764976  NOTICE: Creating video thread
19:56:26.008 T:3498173296  NOTICE: running thread: video_thread
19:56:26.009 T:3701764976  NOTICE: Opening stream: 1 source: 256
19:56:26.009 T:3701764976  NOTICE: Finding audio codec for: 86018
19:56:26.010 T:3701764976  NOTICE: CDVDAudioCodecFFmpeg::Open() Successful opened audio decoder aac
19:56:26.010 T:3701764976  NOTICE: Creating audio thread
19:56:26.010 T:3668194160  NOTICE: running thread: CVideoPlayerAudio::Process()
19:56:26.021 T:3668194160  NOTICE: Creating audio stream (codec id: 86018, channels: 2, sample rate: 48000, no pass-through)
19:56:26.026 T:3498173296  NOTICE: CAMLCodec::OpenDecoder - using V4L2 pts format: 64Bit
19:56:26.241 T:4092575664  NOTICE: Display resolution ADJUST : 3840x2160 @ 50.00 - Full Screen (40) (wéight: 0.000)
19:56:33.168 T:4092575664  NOTICE: CVideoPlayer::CloseFile()
19:56:33.168 T:4092575664  NOTICE: VideoPlayer: waiting for threads to exit
19:56:33.178 T:3701764976  NOTICE: CVideoPlayer::OnExit()
19:56:33.178 T:3701764976  NOTICE: Closing stream player 1
19:56:33.178 T:3701764976  NOTICE: Waiting for audio thread to exit
19:56:33.179 T:3668194160  NOTICE: thread end: CVideoPlayerAudio::OnExit()
19:56:33.179 T:3701764976  NOTICE: Closing audio device
19:56:33.188 T:3701764976  NOTICE: Deleting audio codec
19:56:33.188 T:3701764976  NOTICE: Closing stream player 2
19:56:33.189 T:3701764976  NOTICE: waiting for video thread to exit
19:56:33.189 T:3498173296  NOTICE: thread end: video_thread
19:56:33.191 T:3701764976  NOTICE: deleting video codec
19:56:33.220 T:4092575664  NOTICE: VideoPlayer: finished waiting
19:56:33.221 T:4092575664  NOTICE: CVideoPlayer::CloseFile()
19:56:33.221 T:4092575664  NOTICE: VideoPlayer: waiting for threads to exit
19:56:33.221 T:4092575664  NOTICE: VideoPlayer: finished waiting

Display More

Log for the corrupted audio case:

Code

19:59:02.811 T:4092575664  NOTICE: VideoPlayer::OpenFile: smb://****************.720p.mp4
19:59:02.812 T:3557815152  NOTICE: Creating InputStream
19:59:02.894 T:3557815152  NOTICE: Creating Demuxer
19:59:03.057 T:3557815152  NOTICE: Opening stream: 0 source: 256
19:59:03.059 T:3557815152  NOTICE: Display resolution ADJUST : 3840x2160 @ 50.00 - Full Screen (40) (wéight: 0.000)
19:59:03.072 T:3557815152  NOTICE: Creating video codec with codec id: 27
19:59:03.074 T:3557815152  NOTICE: Creating video thread
19:59:03.074 T:3531744112  NOTICE: running thread: video_thread
19:59:03.075 T:3557815152  NOTICE: Opening stream: 1 source: 256
19:59:03.075 T:3557815152  NOTICE: Finding audio codec for: 86018
19:59:03.077 T:3557815152  NOTICE: CDVDAudioCodecFFmpeg::Open() Successful opened audio decoder aac
19:59:03.077 T:3557815152  NOTICE: Creating audio thread
19:59:03.077 T:3523351408  NOTICE: running thread: CVideoPlayerAudio::Process()
19:59:03.090 T:3523351408  NOTICE: Creating audio stream (codec id: 86018, channels: 2, sample rate: 48000, no pass-through)
19:59:03.096 T:3531744112  NOTICE: CAMLCodec::OpenDecoder - using V4L2 pts format: 64Bit
19:59:03.523 T:4092575664  NOTICE: Display resolution ADJUST : 3840x2160 @ 50.00 - Full Screen (40) (wéight: 0.000)
19:59:09.409 T:4069774192 WARNING: ActiveAE - large audio sync error: -1000.888044
19:59:09.419 T:4069774192 WARNING: ActiveAE - large audio sync error: -1006.003794
19:59:10.700 T:4069774192 WARNING: ActiveAE - large audio sync error: -1006.039863
19:59:10.710 T:4069774192 WARNING: ActiveAE - large audio sync error: -1010.125404
19:59:10.721 T:4069774192 WARNING: ActiveAE - large audio sync error: -1016.249946
19:59:10.731 T:4069774192 WARNING: ActiveAE - large audio sync error: -1021.335446
19:59:10.742 T:4069774192 WARNING: ActiveAE - large audio sync error: -1027.445446
19:59:10.753 T:4069774192 WARNING: ActiveAE - large audio sync error: -1031.553154
19:59:10.763 T:4069774192 WARNING: ActiveAE - large audio sync error: -1036.662029
19:59:10.775 T:4069774192 WARNING: ActiveAE - large audio sync error: -1042.774405
19:59:10.785 T:4069774192 WARNING: ActiveAE - large audio sync error: -1047.869404
19:59:10.796 T:4069774192 WARNING: ActiveAE - large audio sync error: -1052.983404
19:59:10.806 T:4069774192 WARNING: ActiveAE - large audio sync error: -1058.064404
19:59:10.817 T:4069774192 WARNING: ActiveAE - large audio sync error: -1064.181320
19:59:12.097 T:4069774192 WARNING: ActiveAE - large audio sync error: -1004.799980
19:59:12.108 T:4069774192 WARNING: ActiveAE - large audio sync error: -1010.894314
19:59:12.118 T:4069774192 WARNING: ActiveAE - large audio sync error: -1016.007897
19:59:12.129 T:4069774192 WARNING: ActiveAE - large audio sync error: -1021.100064
19:59:12.139 T:4069774192 WARNING: ActiveAE - large audio sync error: -1026.221064
19:59:12.150 T:4069774192 WARNING: ActiveAE - large audio sync error: -1032.447981
19:59:12.161 T:4069774192 WARNING: ActiveAE - large audio sync error: -1038.465897
19:59:12.171 T:4069774192 WARNING: ActiveAE - large audio sync error: -1041.561356
19:59:12.183 T:4069774192 WARNING: ActiveAE - large audio sync error: -1047.685856
19:59:12.193 T:4069774192 WARNING: ActiveAE - large audio sync error: -1052.759813
19:59:12.204 T:4069774192 WARNING: ActiveAE - large audio sync error: -1058.881022
19:59:12.214 T:4069774192 WARNING: ActiveAE - large audio sync error: -1062.976564
19:59:12.225 T:4069774192 WARNING: ActiveAE - large audio sync error: -1069.052342
19:59:12.295 T:4092575664  NOTICE: CVideoPlayer::CloseFile()
19:59:12.295 T:4092575664  NOTICE: VideoPlayer: waiting for threads to exit
19:59:12.305 T:3557815152  NOTICE: CVideoPlayer::OnExit()
19:59:12.305 T:3557815152  NOTICE: Closing stream player 1
19:59:12.305 T:3557815152  NOTICE: Waiting for audio thread to exit
19:59:12.321 T:3523351408  NOTICE: thread end: CVideoPlayerAudio::OnExit()
19:59:12.321 T:3557815152  NOTICE: Closing audio device
19:59:12.334 T:3557815152  NOTICE: Deleting audio codec
19:59:12.335 T:3557815152  NOTICE: Closing stream player 2
19:59:12.335 T:3557815152  NOTICE: waiting for video thread to exit
19:59:12.379 T:3531744112  NOTICE: thread end: video_thread
19:59:12.383 T:3557815152  NOTICE: deleting video codec
19:59:12.420 T:4092575664  NOTICE: VideoPlayer: finished waiting
19:59:12.420 T:4092575664  NOTICE: CVideoPlayer::CloseFile()
19:59:12.421 T:4092575664  NOTICE: VideoPlayer: waiting for threads to exit
19:59:12.421 T:4092575664  NOTICE: VideoPlayer: finished waiting

Display More

lionel.tab · February 20, 2019 at 2:28 PM

Hello,

Exactly the same problem for me on my Wetek play 2. Sound works great on movie (DTS and DD) but not on pvr for example (2.0 channel).

Wtek is connected with HDMI to Onkyo receiver passthrough enable.

For the moment i've downgrade my wetek to 8.2.5 => No problem.

mike7 · February 23, 2019 at 7:51 PM

Hello, I've got same issues.

Bug report is created LE 9.0 Odroid C2 Audio issues

Morguito · April 30, 2019 at 4:57 PM

Similar issue, same setup (Odroid C2, latest LibreELEC), except that in my case I'm having problems specifically with aac/mp4 files, video and audio. Other formats, stereo or not, work fine.

Anyway, so far, I've found 3 workarounds, but none of them is ideal.

1-Play everything through the default/analog output. This doesn't affect passthrough signals, but plays music files through Odroid's DAC, which sounds considerably worse than my AVR's DAC.

2-Enable "stereo upmix". This makes aac/mp4 play, but will upmix everything that doesn't passes through, including my music files. Far from ideal, in fact, I'm yet to find any upmixing process that sounds good.

3-Enable "stereo upmix", reduce number of channels to 2, enable "Dolby Digital Transcoding". When you reduce the number of channels to 2, a new option called "Enable Dolby Digital Transcoding" shows up under "Passtrough" settings. This allows video files encoded with aac/pm4 to be properly decoded by the AVR...Again, the downside is that music files are still processed by Kodi; They're not really upsampled, since there are just 2 channels selected, but are still being unpleasantly processed.

To sum up, the problem boils down to playing music. Every one of the above workarounds "solves" the "video without sound" issue, specially option 3. However, in every one of them music quality is still being affected either by Odroid's DAC or Kodi internal processing.

If you ask me, this is a bug.

powerarmour · April 30, 2019 at 8:32 PM

Quote from Morguito

If you ask me, this is a bug.

It's a 'known' bug though, it's not worth fixing until we get a new kernel that isn't 3.14.

Morguito · May 1, 2019 at 1:45 PM

I can confirm that CoreELEC doesn't have this issue.

I've started using it yesterday and it's working just fine.

IfThenERROR · May 9, 2019 at 3:54 PM

Quote from powerarmour

It's a 'known' bug though, it's not worth fixing until we get a new kernel that isn't 3.14.

And when might that be? Will the kernel be changed within the next LE 9.0.x or rather with LE 10 in 3 years?

Currently LE9 works more like a beta on the Odroid C2. I can view exactly one video file with sound and have to reboot before playing the next one.

Morguito · May 10, 2019 at 7:24 PM

Quote from IfThenERROR

And when might that be? Will the kernel be changed within the next LE 9.0.x or rather with LE 10 in 3 years?

Currently LE9 works more like a beta on the Odroid C2. I can view exactly one video file with sound and have to reboot before playing the next one.

I've been using CoreELEC since my last post and it's running smoothly. You should try it.

**blueribb** · May 10, 2019 at 7:39 PM

When switching from Libreelec to CoreELEC, can you just place the CoreELEC file in the Libreelec "updates" folder ?

Or should someone do a Backup, Fresh install and Restore ?

Morguito · May 21, 2019 at 8:04 PM

Quote from blueribb

When switching from Libreelec to CoreELEC, can you just place the CoreELEC file in the Libreelec "updates" folder ?

Or should someone do a Backup, Fresh install and Restore ?

I wouldn't recommend that. The guys from CoreELEC team don't as well.

The backup route is more appropriate, I think.