I`m experiencing similar problems with one .mkv file.
Video working perfectly but no sound with WDTV on Stereo output .
Neither on TV (via HDMI) nor Stereo amplifier (analog).
- WDTV set to Stereo downmix of course -
No problems when playing the file on VLC.
Seems to be a firmware issue…
—> oops…wrong section. Belongs to “WDTV Live Streaming Mediaplayer”.…sorry
----- Here i got the Media Information -------
Format : Matroska
Format version : Version 2
File size : 5.64 GiB
Duration : 1h 35mn
Overall bit rate : 8 475 Kbps
Writing application : Lavf51.12.1
Writing library : Lavf51.12.1
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Baseline@L3.1
Format settings, CABAC : No
Format settings, ReFrames : 1 frame
Format settings, GOP : M=1, N=12
Codec ID : V_MPEG4/ISO/AVC
Duration : 1h 35mn
Bit rate : 6 896 Kbps
Width : 1 280 pixels
Height : 528 pixels
Display aspect ratio : 2.40:1
Frame rate mode : Variable
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.426
Stream size : 4.59 GiB (81%)
Language : English
Default : Yes
Forced : No
Audio
ID : 2
Format : DTS
Format/Info : Digital Theater Systems
Codec ID : A_DTS
Duration : 1h 35mn
Bit rate mode : Constant
Bit rate : 1 411.2 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Compression mode : Lossy
Stream size : 962 MiB (17%)
Default : Yes
Forced : No