No Audio/Video Sync when Refresh Rate at 24Hz (maybe other RR too) (1 Viewer)

Slurm

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  • December 16, 2006
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    Graz
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    TV-Server Version: 1.0.0.0 RC3
    MediaPortal Version: 1.0.0.0 RC3
    MediaPortal Skin: Monochrome
    Windows Version: XP SP3
    CPU Type: Intel E8400
    HDD: 3x Seagate Barracuda 750GB, 1x Maxtor 750GB
    Memory: 3GB DDR2
    Motherboard: Intel DP35DP
    Video Card: EVGA e-GeForce 8600 GTS
    Video Card Driver: Nvidia Forceware 179.13
    Sound Card: Onboard
    Sound Card AC3: Onboard optical out
    Sound Card Driver: 5790_5713_v83
    1. TV Card: Terratec Cinergy S2 CI
    1. TV Card Type: DVB-S2
    1. TV Card Driver: 1.1.0.601 BDA
    2. TV Card:
    2. TV Card Type:
    2. TV Card Driver:
    3. TV Card:
    3. TV Card Type:
    3. TV Card Driver:
    4. TV Card:
    4. TV Card Type:
    4. TV Card Driver:
    MPEG2 Video Codec: PowerDVD 8
    MPEG2 Audio Codec: AC3filter 1.51a
    h.264 Video Codec: Core AVC 1.8.0.0
    Satelite/CableTV Provider: Astra 19.2°E
    HTPC Case: OrigenAE X15e
    Cooling: 3x Smartcooler LFM1580M, Zalman CNP S9500
    Power Supply: Corsair 550W
    Remote: OrigenAE Remote (irtrans)
    TV: Samsung LE-40A656
    TV - HTPC Connection: DVI->HDMI

    When RR at 24Hz there's no sync between audio and video in MP. Other applications play well with correct audio/video sync.
     

    Slurm

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  • December 16, 2006
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    Some more info on it (copied from another discussion about it):

    Only 24Hz RR seems to have this problem (haven't seen it with 50Hz or 60Hz).
    The problem occurs with vmr and exclusive mode enabled.
    Some codecs are more affected than others (cyberlink seems to perform best).
    Using reclock solves the problem but media start is slow.
    Disabling exclusive mode solves the problem too but causes tearing and sometimes media won't start (in my case - not sure if this is common).
    Haven't tested evr because of heavy tearing.
    Outside of MP there's no problem regardless of the codecs used.
     

    psykoman

    Portal Pro
    August 30, 2006
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    1
    Graz
    Austria Austria
    What I can tell from my experience

    Only 24Hz RR seems to have this problem (haven't seen it with 50Hz or 60Hz).
    Same here

    The problem occurs with vmr and exclusive mode enabled.
    Disagree. I'm using Vista SP1 with EVR getting the same problems.

    Some codecs are more affected than others (cyberlink seems to perform best).
    True. Playing back HD material with CoreAVC is the worst case. SD with ffdshow is a little bit better but also noticeable.

    Using reclock solves the problem but media start is slow.
    Disabling exclusive mode solves the problem too but causes tearing and sometimes media won't start (in my case - not sure if this is common).
    Haven't tested with reclock, wasn't available for Vista recently.

    Haven't tested evr because of heavy tearing.
    I get same results using EVR and VMR with exklusive mode.

    Outside of MP there's no problem regardless of the codecs used.
    Absolutely true. Neither with WMP nor VLC I get this lag.

    :D in advance for any help!
     

    gibman

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  • October 4, 2006
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    We highly recommend "ffdaudio decoder filter".
    Try this instead of ac3filter etc.

    I'm using pdvd8 filters for mpeg2 and h264, and ffdaudio as audiofilter.
    xp + vmr9 + excl. mode (ati hd3650 cats 8.10)

    I change between 24hz, 50hz and 60hz...no problems with a/v synch here.

    /gibman
     

    Slurm

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    We highly recommend "ffdaudio decoder filter".
    Try this instead of ac3filter etc.

    I'm using pdvd8 filters for mpeg2 and h264, and ffdaudio as audiofilter.
    xp + vmr9 + excl. mode (ati hd3650 cats 8.10)

    I change between 24hz, 50hz and 60hz...no problems with a/v synch here.

    /gibman
    Thanks, I'll try it when I'm at home and report back here.
     

    psykoman

    Portal Pro
    August 30, 2006
    64
    1
    Graz
    Austria Austria
    We highly recommend "ffdaudio decoder filter".
    Try this instead of ac3filter etc.

    I'm using pdvd8 filters for mpeg2 and h264, and ffdaudio as audiofilter.
    xp + vmr9 + excl. mode (ati hd3650 cats 8.10)

    I change between 24hz, 50hz and 60hz...no problems with a/v synch here.

    /gibman
    Hi, thx for the hint, but I tested every popular audio codec previously. 5 minutes ago I tested with ffdaudio again, just to find the same problem of lagging audio again.
    Also I tested pdvd8 and coreavc for hd decoding, no change. The only different setting I have is the EVR renderer. Couldn't remember if I tested 24Hz lag with VMR before, so I also gave it a try. Result: The lag is MUCH smaller/shorter, but it is definitively there, getting bigger along with the amount of played time.

    As I mentioned in the other lag thread, with WMP/VLC the lag doesn't appear.

    Can we provide something for finding the bug? I could record a demo video, showing the normal behaviour of MP under 60Hz, showing normal behaviour of WMP/VLC under 24Hz as well as the lag within MP.
    Had a look at logs, don't think thats anything useful for this bug in there.

    Thx and cheers.
     

    Slurm

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    I've tested extensivly with ffdaudio and have to say: The lag is gone!

    It just works perfect.

    As psykoman still has problems even with the recommended settings I'm not adding a fixed to this bug.
     

    psykoman

    Portal Pro
    August 30, 2006
    64
    1
    Graz
    Austria Austria
    Hi infinity,

    yes, the issue even occured in windowed mode.

    But I think I might have figured out the problem in the meanwhile. I had a look with graphstudio on the graph, and figured out that mpa was in use (ffdshow was loaded, but not included in the graph). Actually I had ffdshow audio selected in preferences. I kicked MPA out of my system, and now an MS decoder was in use in the graph. MP didn't want to use ffdshow. I tried to change merit –*nothing.
    I got angry and uninstalled ffdshow tryouts, and reinstalled it, guess what: it worked.

    I started a few movies to test, and couldn't spot any lag. Later that evening, my computer crashed and MP installation was destroyed, had to reinstall MP, MPA was installed again (how can I deselect MPA to install with MP?) –*same issue as before. Lag is back, I can select any decoder I want, same problem. Well with the reinstallation of MP also graphstudio stopped working, it won't display any graph if I want to connect, so I cant check which codec is in use, but i assume MPA or another audio decoder available on my system.

    Tried to reinstall ffdshow again, but this time without success…

    Story continues another day.
     

    Jeditrav

    Portal Pro
    May 17, 2007
    319
    20
    New Zealand New Zealand
    Hi,

    been using (well, trying to) the refresh rate changer since it's inclusion in latest svn. Everything seems to be working correctly, except 23.976fps files. These files, all .avi format, when played back with the screen changed to a 24hz refresh rate, keep getting further and further out of sync with the audio. This happens whether I use the refresh rate changer or set the refresh rate in the nVidia control panel. These files play back fine (barring the judder) when screen is set to 50hz.
    Is this a codec issue? I've been using ffdshow for .avi files.
    Any thoughts on how to deal with this issue would be greatly appreciated.:D

    I'm having this problem too - reported here

    Any progress on fixing this?
     

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