Audio Problem when playing DTS Video


#1

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


#2

Try enabling Dts capable receiver in audio settings.


#3

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.


#4

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


#5

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.


#6

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


#7

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