No Sound

Hi!

I have a MKV file that plays well on the computer, but there is no sound in WD TV Live. Other files play fine on both WD and on computer.

I dont see anything unusal in the info:

AudioID : 2Format : AC-3Format/Info : Audio Coding 3Mode extension : CM (complete main)Codec ID : A_AC3Duration : 1mn 2sBit rate mode : ConstantBit rate : 640 KbpsChannel(s) : 6 channelsChannel positions : Front: L C R, Side: L R, LFESampling rate : 48.0 KHzVideo delay : 13msStream size : 4.75 MiB (8%)Title : AC3 5.1 @ 640 kbps

Firmware is the latest beta.

Here is a sample, too: http://rapidshare.com/files/404648835/sample.mkv.html

What settings do you have for sound – either Stereo or Digital?

And how are you connecting to your audio output device and is it direct to your TV or to a receiver?

Stereo, the sound goes to TV trough HDMI.

I can confirm that this does not play any sound either via HDMI or the composite audio output. It must be some strange thing to do with audio encoding.

If it’s just that file it’s easy to fix.  FFmpeg would do it in a few minutes.

OK I have now got the sound to work.

Run the file through MKVmerge Version 4.0.0 (The stars were mine) and the new file should now have sound. It takes a few seconds and obviously corrects some problem with the file which may have been caused by the latest MKVmerge 4.1.0 (Boiling point). Just add the original file and start muxing.

You can download the old version from here

http://www.videohelp.com/download/mkvtoolnix-unicode-4.0.0-setup.exe

Hope this helps.

Yes, that helped. Thank you!

Thanks a lot for this info. I was having the same issues w/mkv files-no audio. The mkvmerge seems to have solved the problem.

frakkin awesome.  this has been bugging the heck outta me.  newer versions of mkvmerge don’t work.  v4.0.0.0 works perfectly for this.  wish i read this post before i deleted some things. 

sincerest thanks.

Hey RichUK thanks so much for the 4.0.0 fix!  It worked for me, only catch was I could just run mux right away, I had to set the default track flag to default and forced track flag to yes.  that seemed to do the trick as I am watching and listening to it now!  Thanks so much.

Great post! It’s very nice. Thank you so much for your post.

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WD FIX it please…


Why does audio or video not play anymore since v4.1.0 (e.g. MP3, AC3, DTS audio tracks, h264 video tracks)?


The Matroska specifications know a feature called “header removal compression”. This allows a muxer to keep a certain number of bytes that are identical for each frame in the track headers removing them from the individual frames. This reduces the size of the tracks significantly without altering the content as a demuxer can add the bytes found in the track headers to each frame during demuxing.

Starting with v4.1.0 mkvmerge uses header removal compression for a couple of track types by default. These include AC3, DTS and MP3 audio tracks as well as Dirac and MPEG-4 part 2 (aka. XviD/DivX) video tracks. The user muxing a file may disable it by explicitely selecting ‘none’ as the compression scheme for such a track.

If your player has difficulties playing such files then it is a bug in that player or in the demuxer but not in mkvmerge. This feature has been part of the Matroska specification since more than six years, and there’s no excuse for refusing to add support for it.

The proper solution is to ask the vendor of your player to support this feature. A temporary solution is to re-mux such files turning off extra compression for all tracks.


http://www.bunkus.org/videotools/mkvtoolnix/faq.html#header_removal_compression

I have avi files with AC3 audio that will not play.

What are my options, if any?!?!?

Thanks in advanced!

dG

I have avi files with AC3 audio that will not play.

What are my options, if any?!?!?

Thanks in advanced!

dG

You should be able to play AC3 sound – can you post the MediaInfo on the file that won’t play?

If it’s something to do with the codec it can always be changed or re-encoded, using ffmpeg would be the best bet.  But let’s see what that file looks like.  Also, I’d advise you to start your own thread, as it is not the best idea to post at the end of a long thread of someone else’s.

Duckmanfoo wrote:

I have avi files with AC3 audio that will not play.

 

What are my options, if any?!?!?

 

Thanks in advanced!

 

dG

There is no need to post multiple queries. 

http://community.wdc.com/t5/General-Discussions/No-sound-from-AVI-files-with-AC3-digital-audio/td-p/50250

How do I get you the info you require about these avi files that wont play?

Let me know if a pic or something else is required.

Dg

Use the program MediaInfo and copy and paste the information about the file (but do it in the other thread you started).

I Tried it first with mkvtoolnix 4.3,but it did not work!Then i downloaded mkvtoolnix 4.0 and now it works!

Thanx a lot!

I hope that WD sometime in the future releases a firmware update for the WDTVlive to fix  this mkvsound issue

without saying that you have to buy the “WDTVlive plus”!

I already sold my first wd player, then bought the live, now I need to go buy the live plus?!?!

Give me a break!  Whats up with this company??  This is totally ridiculous!

Next purchase will be asus or another competitor.  There is plenty of competition and I’m sure they are studying all the short comings of this media player and will design ONE machine that will cover ALL of these redundant issues that the users keep complaining about…