MediaPortal Audio Renderer (1 Viewer)

[tourettes]

I have one test request. Please try to find as big DevicePeriod setting / value that your HW supports (400 ms on Nvidia GPU) and then try to see if there is A/V sync issue (I would expect the audio to be roughly the 400 ms late if that was the biggest DevicePeriod that works).

PLease report if the A/V sync is correct or not. And then do the same testing with the attached MPAR binary.

 

[HomeY]

Did some testing with an ATi HD5770 + LAV 0.50.5 (no dxva).
DevicePeriod set @ 500ms (Max working setting)

First test with MPAR from v1.3Alpha testbuild was A/V out-of-sync (Audio is late).
Second test was with the attached MPAR_av_sync_test which (at first) gave the same results. But when i used a few skip steps it seemed to get in sync better, but i still didn't have a complete A/V sync (as compared to dsound).

Tested with Beyoncé disc.

 

[elliottmc]

Since this in in 1.3.0alpha, the thread prefix should be set to 'finished' ?

 

[Holzi]

I think there is some work to do for MP 1.3.0 BETA? (e.g. Xonar fixes?)

 

[wouter1971]

Hi Tourettes, i found one trouble movie. It's Tangled (Rapunzel) and reports 26+ fps instead of 25 in the shift+! field. No dropped frames just sawtooth red line.
LAV as prefered decoders. Logs attached. Any clue?

What EVR stats are showing as fps if you don't use MPAR? Logs didn't give any clues why such would happen.

Hi Tourettes, i think i've found something. I played the file using Directsound instead of MPaudiorenderer and found out it was silkysmooth at 25fps, but original framerate stated 23.976 fps. That was realy strange so i checked the mediainfo of this movie compared to a "normal" 23.976 fps movie.

Tangled Video:
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 1h 36mn
Bit rate : 8 500 Kbps
Width : 1 876 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 fps
Original frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive

Other Video:
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 5 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 4h 23mn
Bit rate : 8 599 Kbps
Width : 1 920 pixels
Height : 800 pixels
Display aspect ratio : 2.40:1
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive

Could it be that mpaudiorenderer has a problem with the "frame rate" value, as that is the only difference i see?
If the frame rate is already 25 fps mpaudiorenderer should not act, right? Instead it looks like it's adding the difference between 23.976 and 25 to the 25fps value (26+ fps). Does this all make sense?

 

[craigbeat]

When using this, the video playback is near perfect on every source (DVD rips, BlueRay rips, Live TV). However, when watching live / recorded TV, the audio gradually gets worse and worse, breaking up regularly, and eventually stopping altogether. I cannot see anything in the logs to suggest why this is happening, but I dare say that it is to do with the frame rate. I have resolution / framerate switching enabled, and the sources I watch on Live TV are 25fps (Pal). The audio loses sync when watching both SD and HD channels.

 

[tourettes]

Could it be that mpaudiorenderer has a problem with the "frame rate" value, as that is the only difference i see?
If the frame rate is already 25 fps mpaudiorenderer should not act, right? Instead it looks like it's adding the difference between 23.976 and 25 to the 25fps value (26+ fps). Does this all make sense?

Highly likely. Audio renderer isn't able to analyze the fps in any way - it will just trust what the EVR presenters tells to it. Currently the EVR presenter is using the incoming fps information so if the source filter resports something incorrect the behavior you are seeing is more than likely to happen

Currently there is no plans for changing the EVR presenter side to report the rendering fps to audio renderer since it has it's own issues when trying to detect such... Maybe Tony has some free time later this year to take a peek into it

 

[wouter1971]

Could it be that mpaudiorenderer has a problem with the "frame rate" value, as that is the only difference i see?
If the frame rate is already 25 fps mpaudiorenderer should not act, right? Instead it looks like it's adding the difference between 23.976 and 25 to the 25fps value (26+ fps). Does this all make sense?

Highly likely. Audio renderer isn't able to analyze the fps in any way - it will just trust what the EVR presenters tells to it. Currently the EVR presenter is using the incoming fps information so if the source filter resports something incorrect the behavior you are seeing is more than likely to happen

Currently there is no plans for changing the EVR presenter side to report the rendering fps to audio renderer since it has it's own issues when trying to detect such... Maybe Tony has some free time later this year to take a peek into it

Ok thanks Tourettes, nice to see i can be of help. I'll try to ask Tony nicely

 

[red5goahead]

Tourettes. I have a problem with MPAR configured with Xonar.
If I start for the first time a multimedia file it work . on second time It take a long time and sometimes not start at all.

 

[Sebastiii]

Try : ReleaseDeviceOnStop set to 1 to see if it make difference