MediaPortal Audio renderer - better video playback quality (7 Viewers)

[tourettes]

12-09-2010 21:12:58.576 [ f30] DevicePeriod: 50000 (1 == minimal, 0 == driver default, other user defined)

12-09-2010 21:12:58.891 [ 1030] WASAPIRenderer::InitAudioClient device reported latency 10 ms - buffer based latency 0

Looks like my theory would be right. 5 ms buffer turns into a 10 ms latency.

Could you test the attached binary? It should fix the 50 ms A/V sync issue you were seeing with the 500000 as device period setting.


UPDATE: unfortunately there might be a change that the latency query is done before the audio device has been initialised -> 0 latency is reported. The bad thing is that we cannot delay the latency query since we need to do it right when the preroll time is queried from the audio renderer by DS graph.

So, most likely that patch only makes the A/V sync worser. It should be 100 ms now when audio buffer is 50 ms on Xonar. But maybe it just makes us to drop few more samples to reach the correct A/V sync (just visible in the log, no audible difference for the correctly working case).

 

[red5goahead]

12-09-2010 21:12:58.576 [ f30] DevicePeriod: 50000 (1 == minimal, 0 == driver default, other user defined)

12-09-2010 21:12:58.891 [ 1030] WASAPIRenderer::InitAudioClient device reported latency 10 ms - buffer based latency 0

Looks like my theory would be right. 5 ms buffer turns into a 10 ms latency.

Could you test the attached binary? It should fix the 50 ms A/V sync issue you were seeing with the 500000 as device period setting.


UPDATE: unfortunately there might be a change that the latency query is done before the audio device has been initialised -> 0 latency is reported. The bad thing is that we cannot delay the latency query since we need to do it right when the 1st audio sample arrives to the renderer since we need to decide the A/V sync at that point.

So, most likely that patch only makes the A/V sync worser. It should be 100 ms now when audio buffer is 50 ms on Xonar.

Mhh Seems better. (but the placebo is another good explanation)
I tried to set -50 ms (like before) and the sound haste. so something happened because -50 ms solve the delay in previous case.

Can you ask a little implementation with the new audio renderer during tests? Wuold be possible to name any renderer release with different name so "Media Portal - Audio Renderer V.11" or something like that? Much easier to test and compare..

 

[red5goahead]

yes, Tourettes . setting to 500.000 (50 Ms? am I right) the audio delay is about 100 ms. (-100 ms in ffdshow to compensate)

with 50.000 (5 ms) the synch is very good.

in the log a lot of new lines:

12-09-2010 22:23:53.428 [  95c] WASAPIRenderer::CheckAudioClient First initialization of the audio renderer
12-09-2010 22:23:53.428 [  95c] WASAPIRenderer::InitAudioClient
12-09-2010 22:23:53.433 [  95c] WASAPIRenderer::InitAudioClient format supported
12-09-2010 22:23:53.445 [  95c] WASAPIRenderer::InitAudioClient service initialization success
12-09-2010 22:23:53.445 [  95c] WASAPIRenderer::InitAudioClient device reported latency 100 ms - where buffer size 50 ms
12-09-2010 22:23:53.445 [  95c] WASAPIRenderer::StartAudioClient
12-09-2010 22:23:53.448 [  95c] SetBias: 1.0409582974
12-09-2010 22:23:53.448 [  95c] SetBias - updated SoundTouch tempo
12-09-2010 22:24:32.511 [ 15d0]   Dropped audio data detected: diff: -9.000 ms MAX_SAMPLE_TIME_ERROR: 1.000 ms
12-09-2010 22:24:34.355 [ 1570] WASAPIRenderer::Render thread: Buffer underrun, no new samples available!
12-09-2010 22:24:34.438 [ 15d0]   Dropped audio data detected: diff: -90.000 ms MAX_SAMPLE_TIME_ERROR: 1.000 ms
12-09-2010 22:24:34.438 [ 15d0]   dropping whole sample - late: 242.642 ms dur: 32.000 ms
12-09-2010 22:24:34.439 [ 15d0]   dropping whole sample - late: 211.686 ms dur: 32.000 ms
12-09-2010 22:24:34.440 [ 15d0]   dropping whole sample - late: 180.730 ms dur: 32.000 ms
12-09-2010 22:24:34.440 [ 15d0]   dropping whole sample - late: 148.730 ms dur: 32.000 ms
12-09-2010 22:24:34.441 [ 15d0]   dropping whole sample - late: 117.774 ms dur: 32.000 ms
12-09-2010 22:24:34.441 [ 15d0]   dropping whole sample - late: 85.774 ms dur: 32.000 ms
12-09-2010 22:24:34.442 [ 15d0]   dropping whole sample - late: 54.818 ms dur: 32.000 ms
12-09-2010 22:24:34.442 [ 15d0]   Live stream position after ::Run has been reached
12-09-2010 22:24:45.878 [ 14ac] Pause
12-09-2010 22:24:45.878 [ 14ac] WASAPIRenderer::StopAudioClient
12-09-2010 22:24:45.878 [ 14ac] WASAPIRenderer::PauseRendererThread
12-09-2010 22:24:45.878 [ 1570] WASAPIRenderer::Render thread - pausing
12-09-2010 22:24:45.979 [ 14ac] Stop
12-09-2010 22:24:45.987 [ 14ac] WASAPIRenderer::Stop - releasing WASAPI resources

 

[Freuli]

AW: Re: AW: MediaPortal Audio renderer - better video playback quality

I think you can't reproduce it with the ts file. I don't have the problems with recorded tv. I have this problem only by watching live TV

If you play a TS buffer file (for instructions how to create that see my previous post) it should be reproducible since the it s basicly the same as playing live tv. Only exception to that would be TsReader running out of the material in live tv - this kind of issue cannot be reproduced with playing a timeshifting buffer file in my videos.

Hi Tourettes,

with the recordings I don't have any problems.
Do you know any reason for:"Only exception to that would be TsReader running out of the material in live tv "?

Thanks

Markus

 

[tourettes]

Re: AW: Re: AW: MediaPortal Audio renderer - better video playback quality

with the recordings I don't have any problems.
Do you know any reason for:"Only exception to that would be TsReader running out of the material in live tv "?

In live tv it could be that the PCs clock is running too fast when compared to the broadcaster's clock and that would cause TsReader to run out of data. But it should be visible in the TsReader.log.

 

[tourettes]

Can you ask a little implementation with the new audio renderer during tests? Wuold be possible to name any renderer release with different name so "Media Portal - Audio Renderer V.11" or something like that? Much easier to test and compare..

It would require to provide dshowhelper.dll's that match all combinations with the audio renderer filter's name. So basicly it wont be possible. EVR presenter is looking for the audio renderer by the name.

 

[tourettes]

yes, Tourettes . setting to 500.000 (50 Ms? am I right) the audio delay is about 100 ms. (-100 ms in ffdshow to compensate)

Yep, its 50 ms.

with 50.000 (5 ms) the synch is very good.

Yep, since there should be only 10 ms - 5 ms == 5 ms A/V sync issue.


Currently I have no clue how to solve the issue with these types of audio cards / drivers that have different latency when compared to the buffer size (in ms). The problem is quite easy to understand. Directshow requests the preroll time before we know how big the audio card / driver latency is. This is also an issue with some cards and AC3 encoding since the buffer size will be changed on the fly to match the driver's request.

We could always set the preroll to be zero ms and then just drop the data to match the latency, but it would be not so good since it would introduce the amount of audio devices latency amount of dropped data in the beginning of playback (mainly silence).

 

[edterbak]

Hi Tourettes,

I ran your wasapi test tool on my asus Xonar DX. Here is the result I have with custom drivers:

Active render endpoints found: 3

• S/PDIF Pass-through Device (ASUS Xonar DX Audio Device)
• ATI HDMI Output (ATI High Definition Audio Device)
• Speakers (ASUS Xonar DX Audio Device)

WASAPI-test.exe version: 3 tested: 2526 ok: 52

Spoiler

..\WASAPI_test_v3>wasapi_test.exe --device "s/pd
if pass-through device (asus xonar dx audio device)"

EXCLUSIVE: off    EVENT DRIVEN: off
-------------------------------------------------------------------------
 44100 16  2   176400  4     1  0         - Format works ok
 44100 16  2   176400  4 65534 22 16    3 - Format works ok
 44100 24  2   264600  6     1  0         - Format works ok
 44100 24  2   264600  6 65534 22 24    3 - Format works ok
 44100 32  2   352800  8 65534 22 24    3 - Format works ok
 44100 32  2   352800  8     1  0         - Format works ok
 44100 32  2   352800  8 65534 22 32    3 - Format works ok
 44100 32  2   352800  8     3  0         - Format works ok
 44100 32  2   352800  8 65534 22 32    3 - Format works ok

EXCLUSIVE: on    EVENT DRIVEN: off
-------------------------------------------------------------------------
 44100 16  1    88200  2     1  0         - Format works ok
 44100 16  2   176400  4     1  0         - Format works ok
 44100 16  2   176400  4 65534 22 16    3 - Format works ok
 44100 24  2   264600  6 65534 22 24    3 - Format works ok
 48000 16  1    96000  2     1  0         - Format works ok
 48000 16  2   192000  4     1  0         - Format works ok
 48000 16  2   192000  4 65534 22 16    3 - Format works ok
 48000 24  2   288000  6 65534 22 24    3 - Format works ok
 96000 16  1   192000  2     1  0         - Format works ok
 96000 16  2   384000  4     1  0         - Format works ok
 96000 16  2   384000  4 65534 22 16    3 - Format works ok
 96000 24  2   576000  6 65534 22 24    3 - Format works ok
192000 16  1   384000  2     1  0         - Format works ok
192000 16  2   768000  4     1  0         - Format works ok
192000 16  2   768000  4 65534 22 16    3 - Format works ok
192000 24  2  1152000  6 65534 22 24    3 - Format works ok

EXCLUSIVE: off    EVENT DRIVEN: on
-------------------------------------------------------------------------
 44100 16  2   176400  4     1  0         - Format works ok
 44100 16  2   176400  4 65534 22 16    3 - Format works ok
 44100 24  2   264600  6     1  0         - Format works ok
 44100 24  2   264600  6 65534 22 24    3 - Format works ok
 44100 32  2   352800  8 65534 22 24    3 - Format works ok
 44100 32  2   352800  8     1  0         - Format works ok
 44100 32  2   352800  8 65534 22 32    3 - Format works ok
 44100 32  2   352800  8     3  0         - Format works ok
 44100 32  2   352800  8 65534 22 32    3 - Format works ok

EXCLUSIVE: on     EVENT DRIVEN: on
-------------------------------------------------------------------------
 44100 16  1    88200  2     1  0         - Format works ok
 44100 16  2   176400  4     1  0         - Format works ok
 44100 16  2   176400  4 65534 22 16    3 - Format works ok
 44100 24  2   264600  6 65534 22 24    3 - Format works ok
 48000 16  1    96000  2     1  0         - Format works ok
 48000 16  2   192000  4     1  0         - Format works ok
 48000 16  2   192000  4 65534 22 16    3 - Format works ok
 48000 24  2   288000  6 65534 22 24    3 - Format works ok
 96000 16  1   192000  2     1  0         - Format works ok
 96000 16  2   384000  4     1  0         - Format works ok
 96000 16  2   384000  4 65534 22 16    3 - Format works ok
 96000 24  2   576000  6 65534 22 24    3 - Format works ok
192000 16  1   384000  2     1  0         - Format works ok
192000 16  2   768000  4     1  0         - Format works ok
192000 16  2   768000  4 65534 22 16    3 - Format works ok
192000 24  2  1152000  6 65534 22 24    3 - Format works ok

AC3 - EXCLUSIVE: on     EVENT DRIVEN: off
-------------------------------------------------------------------------
 48000 16  2   192000  4   146  0         - Format works ok

AC3 - EXCLUSIVE: on     EVENT DRIVEN: on
-------------------------------------------------------------------------
 48000 16  2   192000  4   146  0         - Format works ok


WASAPI-test.exe version: 3   tested: 2526 ok: 52

Oe... I just found out.
with speaker set as audio device I get 100 OK.
Here are details again

WASAPI-test.exe version: 3 tested: 2526 ok: 100

Spoiler

..\WASAPI_test_v3>wasapi_test --list-devices
Active render endpoints found: 3
    S/PDIF Pass-through Device (ASUS Xonar DX Audio Device)
    ATI HDMI Output (ATI High Definition Audio Device)
    Speakers (ASUS Xonar DX Audio Device)

..\WASAPI_test_v3>wasapi_test --device "speakers
 (asus xonar dx audio device)"

EXCLUSIVE: off    EVENT DRIVEN: off
-------------------------------------------------------------------------
 44100 16  6   529200 12 65534 22 16 1551 - Format works ok
 44100 16  6   529200 12 65534 22 16   63 - Format works ok
 44100 24  6   793800 18 65534 22 24 1551 - Format works ok
 44100 24  6   793800 18 65534 22 24   63 - Format works ok
 44100 32  6  1058400 24 65534 22 24 1551 - Format works ok
 44100 32  6  1058400 24 65534 22 24   63 - Format works ok
 44100 32  6  1058400 24 65534 22 32 1551 - Format works ok
 44100 32  6  1058400 24 65534 22 32   63 - Format works ok
 44100 32  6  1058400 24 65534 22 32 1551 - Format works ok
 44100 32  6  1058400 24 65534 22 32   63 - Format works ok

EXCLUSIVE: on    EVENT DRIVEN: off
-------------------------------------------------------------------------
 44100 16  1    88200  2     1  0         - Format works ok
 44100 16  2   176400  4     1  0         - Format works ok
 44100 16  2   176400  4 65534 22 16    3 - Format works ok
 44100 24  2   264600  6 65534 22 24    3 - Format works ok
 44100 16  4   352800  8 65534 22 16   51 - Format works ok
 44100 24  4   529200 12 65534 22 24   51 - Format works ok
 44100 16  6   529200 12 65534 22 16 1551 - Format works ok
 44100 24  6   793800 18 65534 22 24 1551 - Format works ok
 44100 16  8   705600 16 65534 22 16 1599 - Format works ok
 44100 24  8  1058400 24 65534 22 24 1599 - Format works ok
 48000 16  1    96000  2     1  0         - Format works ok
 48000 16  2   192000  4     1  0         - Format works ok
 48000 16  2   192000  4 65534 22 16    3 - Format works ok
 48000 24  2   288000  6 65534 22 24    3 - Format works ok
 48000 16  4   384000  8 65534 22 16   51 - Format works ok
 48000 24  4   576000 12 65534 22 24   51 - Format works ok
 48000 16  6   576000 12 65534 22 16 1551 - Format works ok
 48000 24  6   864000 18 65534 22 24 1551 - Format works ok
 48000 16  8   768000 16 65534 22 16 1599 - Format works ok
 48000 24  8  1152000 24 65534 22 24 1599 - Format works ok
 96000 16  1   192000  2     1  0         - Format works ok
 96000 16  2   384000  4     1  0         - Format works ok
 96000 16  2   384000  4 65534 22 16    3 - Format works ok
 96000 24  2   576000  6 65534 22 24    3 - Format works ok
 96000 16  4   768000  8 65534 22 16   51 - Format works ok
 96000 24  4  1152000 12 65534 22 24   51 - Format works ok
 96000 16  6  1152000 12 65534 22 16 1551 - Format works ok
 96000 24  6  1728000 18 65534 22 24 1551 - Format works ok
 96000 16  8  1536000 16 65534 22 16 1599 - Format works ok
 96000 24  8  2304000 24 65534 22 24 1599 - Format works ok
192000 16  1   384000  2     1  0         - Format works ok
192000 16  2   768000  4     1  0         - Format works ok
192000 16  2   768000  4 65534 22 16    3 - Format works ok
192000 24  2  1152000  6 65534 22 24    3 - Format works ok
192000 16  4  1536000  8 65534 22 16   51 - Format works ok
192000 24  4  2304000 12 65534 22 24   51 - Format works ok
192000 16  6  2304000 12 65534 22 16 1551 - Format works ok
192000 24  6  3456000 18 65534 22 24 1551 - Format works ok
192000 16  8  3072000 16 65534 22 16 1599 - Format works ok
192000 24  8  4608000 24 65534 22 24 1599 - Format works ok

EXCLUSIVE: off    EVENT DRIVEN: on
-------------------------------------------------------------------------
 44100 16  6   529200 12 65534 22 16 1551 - Format works ok
 44100 16  6   529200 12 65534 22 16   63 - Format works ok
 44100 24  6   793800 18 65534 22 24 1551 - Format works ok
 44100 24  6   793800 18 65534 22 24   63 - Format works ok
 44100 32  6  1058400 24 65534 22 24 1551 - Format works ok
 44100 32  6  1058400 24 65534 22 24   63 - Format works ok
 44100 32  6  1058400 24 65534 22 32 1551 - Format works ok
 44100 32  6  1058400 24 65534 22 32   63 - Format works ok
 44100 32  6  1058400 24 65534 22 32 1551 - Format works ok
 44100 32  6  1058400 24 65534 22 32   63 - Format works ok

EXCLUSIVE: on     EVENT DRIVEN: on
-------------------------------------------------------------------------
 44100 16  1    88200  2     1  0         - Format works ok
 44100 16  2   176400  4     1  0         - Format works ok
 44100 16  2   176400  4 65534 22 16    3 - Format works ok
 44100 24  2   264600  6 65534 22 24    3 - Format works ok
 44100 16  4   352800  8 65534 22 16   51 - Format works ok
 44100 24  4   529200 12 65534 22 24   51 - Format works ok
 44100 16  6   529200 12 65534 22 16 1551 - Format works ok
 44100 24  6   793800 18 65534 22 24 1551 - Format works ok
 44100 16  8   705600 16 65534 22 16 1599 - Format works ok
 44100 24  8  1058400 24 65534 22 24 1599 - Format works ok
 48000 16  1    96000  2     1  0         - Format works ok
 48000 16  2   192000  4     1  0         - Format works ok
 48000 16  2   192000  4 65534 22 16    3 - Format works ok
 48000 24  2   288000  6 65534 22 24    3 - Format works ok
 48000 16  4   384000  8 65534 22 16   51 - Format works ok
 48000 24  4   576000 12 65534 22 24   51 - Format works ok
 48000 16  6   576000 12 65534 22 16 1551 - Format works ok
 48000 24  6   864000 18 65534 22 24 1551 - Format works ok
 48000 16  8   768000 16 65534 22 16 1599 - Format works ok
 48000 24  8  1152000 24 65534 22 24 1599 - Format works ok
 96000 16  1   192000  2     1  0         - Format works ok
 96000 16  2   384000  4     1  0         - Format works ok
 96000 16  2   384000  4 65534 22 16    3 - Format works ok
 96000 24  2   576000  6 65534 22 24    3 - Format works ok
 96000 16  4   768000  8 65534 22 16   51 - Format works ok
 96000 24  4  1152000 12 65534 22 24   51 - Format works ok
 96000 16  6  1152000 12 65534 22 16 1551 - Format works ok
 96000 24  6  1728000 18 65534 22 24 1551 - Format works ok
 96000 16  8  1536000 16 65534 22 16 1599 - Format works ok
 96000 24  8  2304000 24 65534 22 24 1599 - Format works ok
192000 16  1   384000  2     1  0         - Format works ok
192000 16  2   768000  4     1  0         - Format works ok
192000 16  2   768000  4 65534 22 16    3 - Format works ok
192000 24  2  1152000  6 65534 22 24    3 - Format works ok
192000 16  4  1536000  8 65534 22 16   51 - Format works ok
192000 24  4  2304000 12 65534 22 24   51 - Format works ok
192000 16  6  2304000 12 65534 22 16 1551 - Format works ok
192000 24  6  3456000 18 65534 22 24 1551 - Format works ok
192000 16  8  3072000 16 65534 22 16 1599 - Format works ok
192000 24  8  4608000 24 65534 22 24 1599 - Format works ok

AC3 - EXCLUSIVE: on     EVENT DRIVEN: off
-------------------------------------------------------------------------

AC3 - EXCLUSIVE: on     EVENT DRIVEN: on
-------------------------------------------------------------------------


WASAPI-test.exe version: 3   tested: 2526 ok: 100

 

[red5goahead]

Hi Tourettes,

I ran your wasapi test tool on my asus Xonar DX. Here is the result I have with custom drivers:
WASAPI-test.exe version: 3 tested: 2526 ok: 52

Spoiler

..\WASAPI_test_v3>wasapi_test.exe --device "s/pd
if pass-through device (asus xonar dx audio device)"

EXCLUSIVE: off    EVENT DRIVEN: off
-------------------------------------------------------------------------
 44100 16  2   176400  4     1  0         - Format works ok
 44100 16  2   176400  4 65534 22 16    3 - Format works ok
 44100 24  2   264600  6     1  0         - Format works ok
 44100 24  2   264600  6 65534 22 24    3 - Format works ok
 44100 32  2   352800  8 65534 22 24    3 - Format works ok
 44100 32  2   352800  8     1  0         - Format works ok
 44100 32  2   352800  8 65534 22 32    3 - Format works ok
 44100 32  2   352800  8     3  0         - Format works ok
 44100 32  2   352800  8 65534 22 32    3 - Format works ok

EXCLUSIVE: on    EVENT DRIVEN: off
-------------------------------------------------------------------------
 44100 16  1    88200  2     1  0         - Format works ok
 44100 16  2   176400  4     1  0         - Format works ok
 44100 16  2   176400  4 65534 22 16    3 - Format works ok
 44100 24  2   264600  6 65534 22 24    3 - Format works ok
 48000 16  1    96000  2     1  0         - Format works ok
 48000 16  2   192000  4     1  0         - Format works ok
 48000 16  2   192000  4 65534 22 16    3 - Format works ok
 48000 24  2   288000  6 65534 22 24    3 - Format works ok
 96000 16  1   192000  2     1  0         - Format works ok
 96000 16  2   384000  4     1  0         - Format works ok
 96000 16  2   384000  4 65534 22 16    3 - Format works ok
 96000 24  2   576000  6 65534 22 24    3 - Format works ok
192000 16  1   384000  2     1  0         - Format works ok
192000 16  2   768000  4     1  0         - Format works ok
192000 16  2   768000  4 65534 22 16    3 - Format works ok
192000 24  2  1152000  6 65534 22 24    3 - Format works ok

EXCLUSIVE: off    EVENT DRIVEN: on
-------------------------------------------------------------------------
 44100 16  2   176400  4     1  0         - Format works ok
 44100 16  2   176400  4 65534 22 16    3 - Format works ok
 44100 24  2   264600  6     1  0         - Format works ok
 44100 24  2   264600  6 65534 22 24    3 - Format works ok
 44100 32  2   352800  8 65534 22 24    3 - Format works ok
 44100 32  2   352800  8     1  0         - Format works ok
 44100 32  2   352800  8 65534 22 32    3 - Format works ok
 44100 32  2   352800  8     3  0         - Format works ok
 44100 32  2   352800  8 65534 22 32    3 - Format works ok

EXCLUSIVE: on     EVENT DRIVEN: on
-------------------------------------------------------------------------
 44100 16  1    88200  2     1  0         - Format works ok
 44100 16  2   176400  4     1  0         - Format works ok
 44100 16  2   176400  4 65534 22 16    3 - Format works ok
 44100 24  2   264600  6 65534 22 24    3 - Format works ok
 48000 16  1    96000  2     1  0         - Format works ok
 48000 16  2   192000  4     1  0         - Format works ok
 48000 16  2   192000  4 65534 22 16    3 - Format works ok
 48000 24  2   288000  6 65534 22 24    3 - Format works ok
 96000 16  1   192000  2     1  0         - Format works ok
 96000 16  2   384000  4     1  0         - Format works ok
 96000 16  2   384000  4 65534 22 16    3 - Format works ok
 96000 24  2   576000  6 65534 22 24    3 - Format works ok
192000 16  1   384000  2     1  0         - Format works ok
192000 16  2   768000  4     1  0         - Format works ok
192000 16  2   768000  4 65534 22 16    3 - Format works ok
192000 24  2  1152000  6 65534 22 24    3 - Format works ok

AC3 - EXCLUSIVE: on     EVENT DRIVEN: off
-------------------------------------------------------------------------
 48000 16  2   192000  4   146  0         - Format works ok

AC3 - EXCLUSIVE: on     EVENT DRIVEN: on
-------------------------------------------------------------------------
 48000 16  2   192000  4   146  0         - Format works ok


WASAPI-test.exe version: 3   tested: 2526 ok: 52

About Xonar DX (my card) Could you try , play-exclusive test ? Because our card seems to have a serious problem with Wasapi support and its event driven feature.

Sample - WASAPI exclusive-mode event-driven playback app, including the HD Audio alignment dance - Matthew van Eerde's web log - Site Home - MSDN Blogs

in case use this wav test:
Iggy pop - Tuff Baby 30sec.zip - 4shared.com - online file sharing and storage - download

Usually the play start fine but sound became awful early.

edit : edterbak wasapi test tool result confirm mine.

 

[edterbak]

About Xonar DX (my card) Could you try , play-exclusive test ? Because our card seems to have a serious problem with Wasapi support and its event driven feature.

Sample - WASAPI exclusive-mode event-driven playback app, including the HD Audio alignment dance - Matthew van Eerde's web log - Site Home - MSDN Blogs

in case use this wav test:
Iggy pop - Tuff Baby 30sec.zip - 4shared.com - online file sharing and storage - download

Usually the play start fine but sound became awful early.

edit : edterbak wasapi test tool result confirm mine.

Here is my result.
It plays fine though. Dont like the music though....
I renamed the wav-file for comfort.

..\play-exclusive\x86>play-exclusive.exe --list-
devices
Active render endpoints found: 3
S/PDIF Pass-through Device (ASUS Xonar DX Audio Device)
ATI HDMI Output (ATI High Definition Audio Device)
Speakers (ASUS Xonar DX Audio Device)

..r\play-exclusive\x86>play-exclusive.exe --devic
e "speakers (asus xonar dx audio device)" --file "iggy 30sec.wav"
Opening .wav file "iggy 30sec.wav"...
Wave format in file is smaller than a WAVEFORMATEX; will zero-pad the last 2 byt
es.
The default period for this device is 30000 hundred-nanoseconds, or 132 frames.
We ended up with a period of 29932 hns or 132 frames.
Successfully played all 1322500 frames.


[edit!!!}

Oh my god!!! Iggy always sounded bad... But it gets worse and worse after the first run!!.
First run was flawless... Nice quality sound
second run, the last 5-10 seconds got slowed down
third run, the last 25 seconds were slowed down.... I hate Iggy now how he sounds in slow motion...

Your right. problem here as well.