No Sound in .mkv files


I recently bought the WD TV Live media player. I downloaded some .mkv files in which video is running but there is no audio. 

the files are  “BluRay.1080p.x264.AC3-5.1-PeN.mkv”

Please help…


Can we assume that they play OK on your computer? 

Use mediainfo to post  info on the movies.

My comp does not have a high def display…


When you start playing the movie on the WDTV, does a little pop-up come up that says “Audio: AC3” or something of the sort?

No such pop up comes…


Have you tried pressing  Option  and the cycling through the audio tracs (if any) with ok?


The options in sound shows only one:

1/1: English AC3 (Digital) but there is no sound???



Are you plugged into a surround sound audio video receiver (AVR), or direct into a TV?

If direct to TV, you might need to change your audio output to Stereo.  My TV won’t play AC3 (digital) but my AVR does.

Switching to Stereo will downmix the AC3 and you should get audio on your TV again.  :)

Settings > Audio/Video > Audio output

Pixel…thanks for the advice…that worked for me!!! :smiley:

I have some of my movies in .mkv format. The video is working fine, but there is no audio. When i try to play the movie it says (Digital) or something similar to it. The movies are in my Hard disk. I have connected the hard disk to WD media player. I have connected the TV to the WD media player using a HDMI cable. Then I have an optical cable running from WD media player to my  Samsung 5.1 home theater receiver. Still the audio is not working. Am I missing something? Should i setup something in the WD media player or in the home theater receiver. I would appreciate your help.

If the Live is set to “digital” then any surround sound audio must be decoded.  If you are running newer firmware go to the video/audio settings and make sure the setting has the optical out enabled for sound decoding.  Then your Samsung receiver must be set for that cable AND must be able to decode whatever the audio is.

Otherwise, change the settings in Audio/video to “Stereo” and the Live will attempt to play in stereo through it’s audio outputs (but not through the optical cable).

Finally, if you can’t get any of this to work, post the MediaInfo information on the file you are trying to play.

My WD TV Live is connected to my Onkyo Receiver with optical cable and wd tv live is set to ‘Digital’ out.  I have many .mkv files and all play/sound fine, except this only one movie with no audio. It plays/sounds fine on my pc.

Herebelow is the MediaInfo and I appreciate your help to solve the problem.

Complete name                    : D:\movies\movies\Daredevil\Daredevil.2003.DirCut.720p.BluRay.DTS.x264-ESiR.mkv

Format                           : Matroska

File size                        : 4.37 GiB

Duration                         : 2h 13mn

Overall bit rate                 : 4 697 Kbps

Movie name                       : Daredevil Director’s Cut (2003)

Encoded date                     : UTC 2010-08-05 05:31:39

Writing application              : mkvmerge v4.1.1 (‘Bouncin’ Back’) built on Jul  3 2010 22:54:08

Writing library                  : libebml v1.0.0 + libmatroska v1.0.0


ID                               : 1

Format                           : AVC

Format/Info                      : Advanced Video Codec

Format profile                   : High@L4.1

Format settings, CABAC           : Yes

Format settings, ReFrames        : 12 frames

Muxing mode                      : Container profile=Unknown@4.1

Codec ID                         : V_MPEG4/ISO/AVC

Duration                         : 2h 13mn

Bit rate                         : 3 944 Kbps

Width                            : 1 280 pixels

Height                           : 540 pixels

Display aspect ratio             : 2.35:1

Frame rate                       : 23.976 fps

Color space                      : YUV

Chroma subsampling               : 4:2:0

Bit depth                        : 8 bits

Scan type                        : Progressive

Bits/(Pixel*Frame)               : 0.238

Stream size                      : 3.58 GiB (82%)

Title                            : x264 @ 3944kbps

Writing library                  : x264 core 64 r987 e71168d

Encoding settings                : cabac=1 / ref=12 / deblock=1:-3:-3 / analyse=0x3:0x113 / me=umh / subme=7 / psy_rd=1.0:0.0 / brdo=1 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=0 / 8x8dct=1 / cqm=2 / deadzone=8,6 / chroma_qp_offset=-2 / threads=6 / nr=0 / decimate=1 / mbaff=0 / bframes=3 / b_pyramid=1 / b_adapt=1 / b_bias=0 / direct=1 / wpredb=1 / bime=1 / keyint=250 / keyint_min=25 / scenecut=40(pre) / rc=2pass / bitrate=3944 / ratetol=1.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / vbv_maxrate=50000 / vbv_bufsize=40000 / ip_ratio=1.40 / pb_ratio=1.30 / aq=1:1.10


ID                               : 2

Format                           : DTS

Format/Info                      : Digital Theater Systems

Codec ID                         : A_DTS

Duration                         : 2h 13mn

Bit rate mode                    : Constant

Bit rate                         : 755 Kbps

Channel(s)                       : 6 channels

Channel positions                : Front: L C R, Side: L R, LFE

Sampling rate                    : 48.0 KHz

Bit depth                        : 24 bits

Stream size                      : 719 MiB (16%)

Title                            : DTS 5.1 @ 768kbps


ID                               : 3

Format                           : **bleep**

Codec ID                         : S_TEXT/**bleep**

Codec ID/Info                    : Advanced Sub Station Alpha



marman wrote:


Writing application              : mkvmerge v4.1.1 (‘Bouncin’ Back’) built on Jul  3 2010 22:54:08

You should download mkvmerge 4.0.0, and remux the file with it.

WeeDee wrote:


marman wrote:


Writing application              : mkvmerge v4.1.1 (‘Bouncin’ Back’) built on Jul  3 2010 22:54:08


You should download mkvmerge 4.0.0, and remux the file with it.


thanks a lot weedee, it worked like a charm, problem solved.