no sound on mkv file

[scahoy]

Like others, I am experiencing no sound on several mkv  files. I feel sure it is a codec issue with the WD Media center, and untill there is a update I will probably need to redo the audio on certain files. Can someone recommend a program and the correct setting to covert the audio ?

cheers

[mkelley]

Welcome to the forums.

If your problem is the file was created by a later version of MKVMerge (you can tell this by using the freeware MediaInfo to examine it -- if it says anything later than 4.0 then that's the issue) you can correct it by using an earlier version of that program (or turn off video and audio header compression in the track options).  The good news is that there is a firmware fix for this coming, but it may be a while (i.e. a month or two?). 

If that's not the problem we'd need to see more details (post the log from the Media Info program for us to help).

[dangerous]

Rather than start a new thread, I'll borrow this one.  I have the same issue - .mkv files usually play perfectly but a couple I have acquired in the last couple of days have no sound.

For one, Windows Media Player classic identifies the audio as 6ch, but mediainfo seems to contradict that, and gives the following output:

General 
Complete name : Y:\PUBLIC\TV\some-totally-legit.mkv 
Format : Matroska 
File size : 1.09 GiB 
Duration : 48mn 5s 
Overall bit rate : 3 256 Kbps 
Writing application : x264.exe 
Writing library : mkv2rls x264-tv version built on 2010 jul 11 


Video 
ID : 1 
Format : AVC 
Format/Info : Advanced Video Codec 
Format profile : High@L3.1 
Format settings, CABAC : Yes 
Format settings, ReFrames : 3 frames 
Muxing mode : Container profile=Unknown@3.1 
Codec ID : V_MPEG4/ISO/AVC 
Duration : 48mn 5s 
Bit rate : 2 866 Kbps 
Width : 1 280 pixels 
Height : 720 pixels 
Display aspect ratio : 16:9 
Frame rate : 23.976 fps 
Color space : YUV 
Chroma subsampling : 4:2:0 
Bit depth : 8 bits 
Scan type : Progressive 
Bits/(Pixel*Frame) : 0.130 
Stream size : 965 MiB (86%) 
Writing library : x264 core 88 r1471 1144615 
Encoding settings : cabac=1 / ref=3 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=6 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=20 / sliced_threads=0 / nr=0 / decimate=1 / mbaff=0 / constrained_intra=0 / bframes=3 / b_pyramid=1 / b_adapt=2 / b_bias=0 / direct=1 / wpredb=1 / wpredp=0 / keyint=240 / keyint_min=24 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=2pass / mbtree=1 / bitrate=2866 / ratetol=1.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / aq=1:1.00 


Audio 
ID : 2 
Format : AC-3 
Format/Info : Audio Coding 3 
Mode extension : CM (complete main) 
Codec ID : A_AC3 
Duration : 48mn 5s 
Bit rate mode : Constant 
Bit rate : 384 Kbps 
Channel(s) : 2 channels 
Channel positions : Front: L R 
Sampling rate : 48.0 KHz 
Bit depth : 16 bits 
Stream size : 132 MiB (12%) 
Title : English 
Language : English 

I think the issue with the other file is the same, as I think they were encoded by the same person.  I'm hoping there is some easy program I can run over these files to "fix" the audio so it works on the WD.

Thanks in advance!

[mkelley]

Well, you can always try the older version of Mkvmerge (4.0 or earlier -- there are lots of links in these forums on where to get it, or you can Google it).  Remxuing can't hurt and it might help.

If not there are more advanced things that can be tried but try that first.

[Bull671122]

I remuxed the files with mkvtoolnix 3.3.0 and work fine, all audio problems solve

[scahoy]

Me too, remuxed file with mkvtoolnix,   no sound  issues resolved. YEA ! now I can watch "True Blood"

http://www.free-codecs.com/MKVToolnix_download.htm

download program

add file

start muxing

done, quick and easy

cheers and thanks for the help.

[richUK]

---

scahoy wrote:

Me too, remuxed file with mkvtoolnix,   no sound  issues resolved. YEA ! now I can watch "True Blood"

http://www.free-codecs.com/MKVToolnix_download.htm

download program

add file

start muxing

done, quick and easy

cheers and thanks for the help.

---

If anybody uses this download link don't forget that you will download the latest version. You will need to turn off header compression on both audio and video or you may run into problems.

[jaysen0011]

3.3 available here...

http://freesoftwarefile.com/freeware/multimedia/mkvtoolnix-330-free-application-sets-for-creating-al...