[mythtv-users] no sound on some DVD's ( DTS )

[mark at onnow.net]

Have been looking throught the archives etc.. and found nothing.

17 release on FC3 from Jerods guide.  All works great, except on certain DVD's I
get no sound.  Others I do and TV is fine.  SB live card.
Here is the front end log.  Assistance appreciated... Things to try, etc...

Full log output below when playing a silent DVD, but here is an interesting snip

------------
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
ADecoder init failed :(
Opening audio decoder: [hwac3] AC3/DTS pass-through SP/DIF
hwac3: switched to DTS, 768000 bps, 48000 Hz
AUDIO: 48000 Hz, 2 ch, 16 bit (0x400), ratio: 96000->192000 (768.0 kbit)
Selected audio codec: [hwdts] afm:hwac3 (DTS through SPDIF)
---------------------------------------------------

Full log:

Opening joystick device /dev/input/js0
Can't open joystick device /dev/input/js0 : No such file or directory
Setting up LIRC support...
Playing dvd://.
Reading disc structure, please wait...
There are 15 titles on this DVD.
There are 27 chapters in this DVD title.
There are 2 angles in this DVD title.
DVD successfully opened.
MPEG-PS file format detected.
VIDEO:  MPEG2  720x480  (aspect 3)  29.970 fps  9800.0 kbps (1225.0 kbyte/s)
==========================================================================
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
ADecoder init failed :(
Opening audio decoder: [hwac3] AC3/DTS pass-through SP/DIF
hwac3: switched to DTS, 768000 bps, 48000 Hz
AUDIO: 48000 Hz, 2 ch, 16 bit (0x400), ratio: 96000->192000 (768.0 kbit)
Selected audio codec: [hwdts] afm:hwac3 (DTS through SPDIF)
==========================================================================
vo: X11 running at 800x600 with depth 24 and 32 bpp (":0.0" => local display)
==========================================================================
Opening video decoder: [mpegpes] MPEG 1/2 Video passthrough
VDec: vo config request - 720 x 480 (preferred csp: Mpeg PES)
Could not find matching colorspace - retrying with -vf scale...
Opening video filter: [scale]
VDecoder init failed :(
Opening video decoder: [libmpeg2] MPEG 1/2 Video decoder libmpeg2-v0.4.0b
Selected video codec: [mpeg12] vfm:libmpeg2 (MPEG 1 or 2 (libmpeg2))
==========================================================================
Checking audio filter chain for 48000Hz/2ch/16bit -> 48000Hz/2ch/8bit...
AF_pre: af format: 2 bps, 2 ch, 48000 hz, big endian AC3
AF_pre: 48000Hz 2ch AC3
alsa: 48000 Hz/2 channels/4 bpf/65536 bytes buffer/Signed 16 bit Little Endian
AO: [alsa] 48000Hz 2ch AC3 (1 bps)
Building audio filter chain for 48000Hz/2ch/16bit -> 48000Hz/2ch/8bit...
Starting playback...


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