Audio Problem when playing DTS Video

Hi all,

CF 9.0.1, TX92 (S912).

When I play a video containing DTS audio you do not hear anything when people speak. Background sound appears OK. Don’t know if this has happened with the recent update to V9 as I don’t play a lot of videos containing DTS.

Here’s an example:

General
Unique ID                                : 200330312029371441825244934486826140974 (0x96B636F4A6B2A34CE7266999C667C52E)
Complete name                            : M:\Serenity.2019.mkv
Format                                   : Matroska
Format version                           : Version 4
File size                                : 5.19 GiB
Duration                                 : 1 h 46 min
Overall bit rate                         : 7 012 kb/s
Movie name                               : Serenity.2019.720p.BluRay.x264.DTS-FGT
Encoded date                             : UTC 2019-02-18 11:40:00
Writing application                      : mkvmerge v31.0.0 ('Dolores In A Shoestand') 64-bit
Writing library                          : libebml v1.3.6 + libmatroska v1.4.9
Cover                                    : Yes
Attachments                              : cover_land.jpg / small_cover.jpg / small_cover_land.jpg / cover.jpg

Video
ID                                       : 1
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High@L4.1
Format settings                          : CABAC / 4 Ref Frames
Format settings, CABAC                   : Yes
Format settings, RefFrames               : 4 frames
Codec ID                                 : V_MPEG4/ISO/AVC
Duration                                 : 1 h 46 min
Bit rate                                 : 5 500 kb/s
Width                                    : 1 280 pixels
Height                                   : 536 pixels
Display aspect ratio                     : 2.40:1
Frame rate mode                          : Constant
Frame rate                               : 23.976 (24000/1001) FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.334
Stream size                              : 4.07 GiB (78%)
Title                                    : Serenity.2019.720p.BluRay.x264.DTS-FGT
Writing library                          : x264 core 148 r2795M aaa9aa8
Encoding settings                        : cabac=1 / ref=4 / deblock=1:-2:-2 / analyse=0x3:0x113 / me=umh / subme=9 / psy=1 / psy_rd=1.00:0.15 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-3 / threads=24 / lookahead_threads=3 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=50 / rc=2pass / mbtree=1 / bitrate=5500 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / vbv_maxrate=31250 / vbv_bufsize=31250 / nal_hrd=none / filler=0 / ip_ratio=1.40 / aq=1:1.00
Language                                 : English
Default                                  : Yes
Forced                                   : No

Audio
ID                                       : 2
Format                                   : DTS
Format/Info                              : Digital Theater Systems
Codec ID                                 : A_DTS
Duration                                 : 1 h 46 min
Bit rate mode                            : Constant
Bit rate                                 : 1 509 kb/s
Channel(s)                               : 6 channels
Channel layout                           : C L R Ls Rs LFE
Sampling rate                            : 48.0 kHz
Frame rate                               : 93.750 FPS (512 SPF)
Bit depth                                : 24 bits
Compression mode                         : Lossy
Stream size                              : 1.12 GiB (22%)
Title                                    : Serenity.2019.720p.BluRay.x264.DTS-FGT
Language                                 : English
Default                                  : Yes
Forced                                   : No

Here are some shots of the settings:



Any help appreciated.

TIA

Greg

Try enabling Dts capable receiver in audio settings.

Also, is there a reason you have 5.1 selected in Number of channels?
If you have a relatively recent AVR, set Number of channels to 2.0 and then in Passthrough settings turn on all of the formats your AVR supports.

Edit: First try to select the supported formats by your AVR without changing Number of channels.

Don’t know if you have AVR or not, but you need to setup your audio as described in kodi wiki as applied to your audio configuration:
https://kodi.wiki/view/Audio_quickstart_guide

just a sidenote, 2.0 -> 5.1 helps me get AAC 5.1 working in my AVR VSX-930 (in passthrough mode). Its because Kodi code I believe, but on 2.0 only stereo goes with the passthrough setting. Other codecs like DD, TrueHD, DTS, Atmos, all fine, but AAC is the pickle.

I’m connected to a TV and not an AVR, and changing the number of channels to 2.0 did the trick.

Many thanks,

Greg

yes, there are plenty of TV which are not capable transcode 5.1 --> stereo…

Seam to be getting mixed answers… But for me.

I have Odroid N2 -> Onkyo Reciever -> Samsung TV

Passthrough enabled, and 2.0 won’t pass through 5.1/7.1 AAC, I had to set the channels to 7.1 to get it to send the full file.

Why are you bumping a 10 month old thread?
You can’t pass through AAC, so you must select 5.1/7.1 channels to output it as multi channel PCM.