[mythtv-users] DTS sound is cracking on some videos

Daniel Herrmann daniel.herrmann1 at gmx.de
Fri Jan 14 09:18:41 UTC 2011

Am 13.01.2011 23:01, schrieb Daniel Herrmann:
> Am 13.01.2011 22:56, schrieb Kevin Ross:
>> On 1/13/2011 1:19 PM, Daniel Herrmann wrote: 
>>> Am 13.01.2011 22:01, schrieb Martin Moores:
>>>> On 13 January 2011 20:58, Daniel Herrmann <daniel.herrmann1 at gmx.de
>>>> <mailto:daniel.herrmann1 at gmx.de>> wrote:
>>>>     Where do i get this from? Are there precompiled packages (or even a
>>>>     ppa), or do i have to compile it myself (not a big problem, but
>>>>     packages
>>>>     save time, though :) )
>>>> http://avenard.com/media/Ubuntu_Repository/Ubuntu_Repository.html
>>> After upgrading to this Version, it works at least, but the Receiver
>>> does not get a DTS Signal anymore, regardless of the settings i make
>>> in Audio Setup...
>> I don't use his prebuilt packages, I built from his git repository. 
>> And I get DTS to my receiver.  I will say that on the Advanced Audio
>> Settings page, I had to check the "Stereo PCM only" checkbox, since
>> my onboard nVidia 8200 can't do 5.1 or 7.1 LPCM.
> If i check this, i get at least a AC3 Signal to my Receiver. Otherwise
> its still PCM, allthough i selected DTS in Audio-Settings
This is the frontend-log when playing a video with DTS. As you can see,
DTS is recognized as Codec, but my Receiver shows up die Dolby Logo, and
not the DTS Logo, which normally appears. Audio settings now are:

Device:     ALSA:hdmi:CARD=NVidia,DEV=0
Dolby:      checked
DTS:        checked
Speaker:    5.1

Advanced audio settings untouched and internal volume control is disabled

Current Version now is: trunk (nk27322)

Here is the log:

2011-01-14 10:12:38.535 TV: Attempting to change from None to WatchingVideo
2011-01-14 10:12:39.210 Pulse: PulseAudio suspend OK
2011-01-14 10:12:39.610 AFD Warning: ScanATSCCaptionStreams() called with no PMT
2011-01-14 10:12:39.611 AFD: Opened codec 0x197bdc0, id(H264) type(Video)
2011-01-14 10:12:39.611 AFD: codec DTS has 6 channels
2011-01-14 10:12:39.611 AFD: Opened codec 0x1c7f650, id(DTS) type(Audio)
2011-01-14 10:12:39.812 Pulse: PulseAudio resume OK
2011-01-14 10:12:40.013 Pulse: PulseAudio suspend OK
2011-01-14 10:12:40.055 AO: Opening audio device 'hdmi:CARD=NVidia,DEV=0' ch 2(6) sr 48000 sf signed 16 bit reenc 1
2011-01-14 10:12:40.058 AudioPlayer: Enabling Audio
2011-01-14 10:12:41.214 VDPAU: Created 2 output surfaces.
2011-01-14 10:12:41.215 VDPAU: Version 1
2011-01-14 10:12:41.215 VDPAU: Information NVIDIA VDPAU Driver Shared Library  195.36.24  Thu Apr 22 19:52:55 PDT 2010
2011-01-14 10:12:41.215 VDPAU: Created VDPAU render device 1920x1080
2011-01-14 10:12:41.677 Player(0): Forcing decode extra audio option on (Video method requires it).
2011-01-14 10:12:41.924 Player(0): Video timing method: USleep with busy wait
2011-01-14 10:12:41.925 TV: Changing from None to WatchingVideo
2011-01-14 10:12:41.980 VDPAU: Added 2 output surfaces (total 4, max 4)

At least the sound works now, but any ideas, why i dont get DTS? I had
this sometimes with 0.23, that when playing audio with DTS, receiver
shows DD. This got fixed for me with 0.24, but in this version it seems
to be there again. Any further ideas?
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