I’m having a strange issue where 2.0 FLAC only has my audio go out briefly, as if it’s timing information is wrong with the video. This happens only when using AML-AUGESOUND HDMI MultiCh PCM audio output. If I use the regular AML-AUGESOUND, HDMI output, the stereo FLAC seems to play back just fine. However, I won’t get 5.1 transcoded DTS for my setup which is why that’s not a solution for me.
My setup is a Ugoos AM6B+ (ng nightly build) into the LG CX TV into the Sonos Arc soundbar.
The audio goes out briefly every 8-15 seconds or so for about a second, and only for stereo FLAC. Mono FLAC seemed to be okay, and DTS-HD tracks which transcode and output as 5.1 PCM also seem to be play back just fine. One thing I experimented with was enabling the “Stereo Upmix” option in Kodi audio settings, and that made the audio cut outs extreme and happen every 2-3 seconds.
My Kodi audio settings are:
- Audio output device = ALSA: AML-AUGESOUND, HDMI MultiCh PCM
- Number of channels = 7.1
- Output config = Best match
- Resample quality = Medium
- Enable Passthrough = Yes
- Passthrough output device = ALSA: AML-AUGESOUND HDMI
- Dolby Digital capable receiver = yes
- Dolby Digital transcoding = no
- DTS capable receiver = no
- TrueHD capable receiver = yes
- DTS-HD capable receiver = no
- Use DTS Core = no
I’ve reset the audio settings to default, and I can 100% reproduce on my files switching between HDMI and HDMI MultiCh PCM gives this issue.
This is also not a new issue. I only got this device earlier this year, and it’s been happening on a few of these movies ever since I first played them around June.
Logs are now attached below! I did get logs, but as I’m a new user I can’t upload them yet it looks like? Happy to do that if there’s another way to provide them.
Here is the MediaInfo of one of the files that has this issue. I can play the Atmos track, which is via passthrough and plays fine. However, in this case I was specifically wanting the stereo FLAC.
MediaInfo
General
Complete name : Batman (1989) Remux-2160p Proper.mkv
Format : Matroska
Format version : Version 4
File size : 67.2 GiB
Duration : 2 h 6 min
Overall bit rate mode : Variable
Overall bit rate : 76.1 Mb/s
Frame rate : 23.976 FPS
Movie name : Batman (1989)
Video
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main 10@L5.1@High
HDR format : Dolby Vision, Version 1.0, dvhe.08.06, BL+RPU, HDR10 compatible / SMPTE ST 2086, HDR10 compatible
Codec ID : V_MPEGH/ISO/HEVC
Duration : 2 h 6 min
Bit rate : 70.0 Mb/s
Width : 3 840 pixels
Height : 2 160 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0 (Type 2)
Bit depth : 10 bits
Bits/(Pixel*Frame) : 0.352
Stream size : 61.8 GiB (92%)
Writing library : ATEME Titan File 3.9.0 (4.9.0.0)
Language : English
Default : Yes
Forced : No
Color range : Limited
Color primaries : BT.2020
Transfer characteristics : PQ
Matrix coefficients : BT.2020 non-constant
Mastering display color primaries : Display P3
Mastering display luminance : min: 0.0050 cd/m2, max: 4000 cd/m2
Maximum Content Light Level : 1284 cd/m2
Maximum Frame-Average Light Level : 113 cd/m2
Audio #1
ID : 2
Format : FLAC
Format/Info : Free Lossless Audio Codec
Codec ID : A_FLAC
Duration : 2 h 6 min
Bit rate mode : Variable
Bit rate : 614 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 44.1 kHz
Frame rate : 10.767 FPS (4096 SPF)
Bit depth : 16 bits
Compression mode : Lossless
Stream size : 554 MiB (1%)
Title : Original Dolby Stereo Mix
Writing library : libFLAC 1.4.3 (2023-06-23)
Language : English
Default : Yes
Forced : No
Source : 1990 Warner Home Video LaserDisc [12000 A/B]
Audio #2
ID : 3
Format : MLP FBA 16-ch
Format/Info : Meridian Lossless Packing FBA with 16-channel presentation
Commercial name : Dolby TrueHD with Dolby Atmos
Codec ID : A_TRUEHD
Duration : 2 h 6 min
Bit rate mode : Variable
Bit rate : 3 772 kb/s
Maximum bit rate : 6 912 kb/s
Channel(s) : 8 channels
Channel layout : L R C LFE Ls Rs Lb Rb
Sampling rate : 48.0 kHz
Frame rate : 1 200.000 FPS (40 SPF)
Compression mode : Lossless
Stream size : 3.33 GiB (5%)
Title : TrueHD Atmos 7.1
Language : English
Default : No
Forced : No
Source : Warner Bros. Blu-ray
Number of dynamic objects : 15
Bed channel count : 1 channel
Bed channel configuration : LFE
removing irrelevant info for size
Any help would be greatly appreciated!
01_KODI.log (1.8 MB)