MediaPortal Audio renderer - better video playback quality (17 Viewers)

[tourettes]

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

One possibility is that the resampling is done, please disable the resampling feature in registry.

You mean "EnableTimestretching"? I set this to 0, no change.

I also enabled FFDShow audio decoder to process uncompressed sound, so it did go into the filter chain. The same happens, the sounds goes away. Video and Audio is in synch the whole time. It just does not play the last 9-10 seconds audio. You can test it yourself now.

I can reproduce the issue on my dev PC. In exlcusive mode audio is stopped approx 9 seconds before the end of the video file (no audio / video sync drifting is happening, sounds like the audio just stops). Something weird going on...

Ok, I think I have found the issue. Source filter / splitter is sending the end of stream even as soon as it has finished reading / splitting the file (see the physical end of the file). At that point the WASAPI (and directsound as well) buffers & client were stopped. At was happening on all files, but since audio is not as much in advance in majority of files as it was in your file (muxing related) the issue was not "visible" with other content. On most of the cases only the last second would get lost.

Please test the attached revision to see if it cures the end of audio missing issue (nothing else is fixed and no one else should bother with this binary. Especially since the binary contains a bit of extra logging - every WASAPI buffer filling request is logged ).

 

[iosub]

hi tourettes

what about donations??? I'm going for holidays in couple of days, so I have to do it now

Iosu

 

[mironicus]

AW: MediaPortal Audio renderer - better video playback quality

tourettes

Thank you! The new mpaudiorenderer.ax works fine with the file. But somehow the logs show this again

24-07-2010 21:08:48.426 [ efc] rtTime: 81293.368 ms rtSampleTime: 90781.250 ms diff -9487.882 ms

 

[tourettes]

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

@tourettes

Thank you! The new mpaudiorenderer.ax works fine with the file. But somehow the logs show this again

24-07-2010 21:08:48.426 [ efc] rtTime: 81293.368 ms rtSampleTime: 90781.250 ms diff -9487.882 ms

That is completely ok. It just tells us that what ever program was used to create the mkv (or the splitter itself) is sending the audio to us quite early. Audio renderer will match those timestamps to the real stream time so the A/V sync itself should be ok.

 

[Seeco]

OK, that fixed it Another question, maybe daft. It says in the install guide that "AC3 encode should be disabled". Does that refer to the AC3 decoder under "codecs" in ffdshow audio?

 

[mironicus]

AW: MediaPortal Audio renderer - better video playback quality

tourettes

Another case solved! You're the man!

 

[tourettes]

what about donations??? I'm going for holidays in couple of days, so I have to do it now

I'm currently trying to search some different amplifier (5.1) models that would be suitable for the job (I don't want to buy something that is just not working in all cases) . Btw HDMI 1.4a would be good to have since it supports 3D. In few next years it could be something that MP needs to have worked on (not nescessary by me, but better to have not to upgrade again to be able to test and debug).

For example Onkyo TX-SR308 or TX-SR508 seem quite promising (but was Onkyo the one people are having issues with Windows 7 and EDID handshake?)

 

[tourettes]

OK, that fixed it Another question, maybe daft. It says in the install guide that "AC3 encode should be disabled". Does that refer to the AC3 decoder under "codecs" in ffdshow audio?

ffdshow -> output

In there only "16 bit integer" and "connect as PCM first" options should be selected. The PCM one is a new feature (half years? ) and it was not there in the previous ffdshow version I had installed on my dev PC.

 

[iosub]

what about donations??? I'm going for holidays in couple of days, so I have to do it now

I'm currently trying to search some different amplifier (5.1) models that would be suitable for the job (I don't want to buy something that is just not working in all cases) . Btw HDMI 1.4a would be good to have since it supports 3D. In few next years it could be something that MP needs to have worked on (not nescessary by me, but better to have not to upgrade again to be able to test and debug).

For example Onkyo TX-SR308 or TX-SR508 seem quite promising (but was Onkyo the one people are having issues with Windows 7 and EDID handshake?)

I have an onkyo TX-NR905, no problems.. is HDMI 1.3 --

just in case I'm out... send me a PM on how to do the donation, ok??

Thanks
Iosu

 

[red5goahead]

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

@tourettes

Thank you! The new mpaudiorenderer.ax works fine with the file. But somehow the logs show this again

24-07-2010 21:08:48.426 [ efc] rtTime: 81293.368 ms rtSampleTime: 90781.250 ms diff -9487.882 ms

That is completely ok. It just tells us that what ever program was used to create the mkv (or the splitter itself) is sending the audio to us quite early. Audio renderer will match those timestamps to the real stream time so the A/V sync itself should be ok.

If that kind of information is avaiable why could not display it on the video renderer display info. Could be usefully.