Codec - Video and Sound out of sync

Discussion in 'Amateur Video Production' started by tmuldoon, May 24, 2006.

  1. tmuldoon

    tmuldoon Guest

    Hello,

    I have several .avi that I convert to mpeg2s, the put them through DVD
    Architect to create DVDs.

    Now when I play the .avi - the audio and video are in sync. When I
    convert them to mpeg2 - SOME are not.

    At the beginning the mpegs are fine...but as they progress the video
    seems to creep ahead of the video. In some cases it gets to about 15
    seconds ahead making watching it useless.

    I have no idea what the cause is.

    Is there some standard update to all video and audio codecs I should be
    installing periodically to ensure my video and audio are in sync?

    Any other suggestions?

    MainConcept Mpeg Encoder
    Tools - DVD Architect 2.0
    Gspot Decoder

    Thanks,

    Tmuld

    Video Codecs installed:
    DMO WMVA WMVideo Advanced Decoder DMO Microsoft Corporation qasf.dll
    --> wmvadvd.dll
    DMO MP4S Mpeg4s Decoder DMO Microsoft Corporation qasf.dll -->
    mp4sdmod.dll
    DMO WMVideo 9 Decoder DMO ** File Missing:
    C:\WINDOWS\System32\wmv9dmod.dll
    DMO WMV Screen decoder DMO Microsoft Corporation qasf.dll -->
    wmsdmod.dll
    DMO WMVideo Decoder DMO Microsoft Corporation qasf.dll --> wmvdmod.dll
    DMO MP43 Mpeg43 Decoder DMO Microsoft Corporation qasf.dll -->
    mp43dmod.dll
    DMO MPG4 Mpeg4 Decoder DMO Microsoft Corporation qasf.dll -->
    mpg4dmod.dll
    DSH DV Video Encoder qdv.dll
    DSH ffdshow video encoder ffdshow.ax
    DSH Indeo® video 5.10 Compression Filter Intel Corporation
    DSH MJPEG Compressor quartz.dll
    DSH DIVX DivX Decoder Filter DivXNetworks, Inc. divxdec.ax
    DSH ffdshow MPEG-4 Video Decoder ffdshow.ax
    DSH MPEG1 MPEG Video Decoder quartz.dll
    DSH DirectVobSub (auto-loading version) Gabest VSFilter.dll
    DSH DVSD DV Video Decoder qdv.dll
    DSH MSS1 Microsoft Screen Video Decompressor Microsoft
    Corporation msscds32.ax
    DSH WMV1 Windows Media Video Decoder Microsoft Corporation wmvds32.ax
    DSH WMV2 Windows Media Video Decoder Microsoft Corporation wmv8ds32.ax
    DSH XVID XviD MPEG-4 Video Decoder xvid.ax
    DSH MP43 Microsoft MPEG-4 Video Decompressor Microsoft
    Corporation mpg4ds32.ax
    DSH IV50 Indeo® video 5.10 Decompression Filter Intel Corporation
    DSH MJPG AVI Draw quartz.dll
    DSH Video Port Manager quartz.dll
    DSH DXRE DivX Subtitle Decoder DivXNetworks DivXMedia.ax
    DSH AVI Decompressor quartz.dll
    DSH DVSD MainConcept DV Video Decoder MainConcept AG mcdsdv.ax
    DSH QTRpza QT Decompressor quartz.dll
    DSH Theora Decode Filter dsfTheoraDecoder.dll
    DSH MPEG1 MainConcept MPEG Video Decoder MainConcept AG mcdsmpeg.ax
    DSH MJPG MJPEG Decompressor quartz.dll
    VFW CFHD CineForm HD Codec V1.2 CineForm Inc. qcap.dll --> cfhd.dll
    VFW CVID Cinepak Codec by Radius Radius Inc. qcap.dll --> iccvid.dll
    VFW DIVX DivX® 6.0 Codec DivXNetworks qcap.dll --> DivX.dll
    VFW FFDS ffdshow Video Codec qcap.dll --> ffdshow.ax
    VFW I420 Intel 4:2:0 Video V2.50 Microsoft Corporation qcap.dll -->
    msh263.drv
    VFW IV32 Intel Indeo(R) Video R3.2 qcap.dll --> ir32_32.dll
    VFW IV41 Intel Indeo® Video 4.5 Intel Corporation qcap.dll -->
    ir41_32.ax
    VFW IV50 Indeo® video 5.10 Intel Corporation qcap.dll --> ir50_32.dll
    VFW IYUV Intel IYUV codec Microsoft Corporation qcap.dll -->
    iyuv_32.dll
    VFW M261 Microsoft H.261 Video Codec Microsoft Corporation qcap.dll -->
    msh261.drv
    VFW M263 Microsoft H.263 Video Codec Microsoft Corporation qcap.dll -->
    msh263.drv
    VFW MRLE Microsoft RLE Microsoft Corporation qcap.dll --> msrle32.dll
    VFW MSVC Microsoft Video 1 Microsoft Corporation qcap.dll -->
    msvidc32.dll
    VFW SP54 Sunplus 32-bit Compressor Sunplus qcap.dll --> SP5X_32.DLL
    VFW SP55 Sunplus 32-bit Compressor Sunplus qcap.dll --> SP5X_32.DLL
    VFW SP56 Sunplus 32-bit Compressor Sunplus qcap.dll --> SP5X_32.DLL
    VFW SP57 Sunplus 32-bit Compressor Sunplus qcap.dll --> SP5X_32.DLL
    VFW SP58 Sunplus 32-bit Compressor Sunplus qcap.dll --> SP5X_32.DLL
    VFW VMNC VMnc v2 ** Unknown VFW Driver file missing
    VFW WMV3 Microsoft Windows Media Video 9 Microsoft Corporation qcap.dll
    --> wmv9vcm.dll
    VFW XVID XviD MPEG-4 Codec qcap.dll --> xvidvfw.dll
    VFW YV12 DivX® 6.0 YV12 Codec DivXNetworks qcap.dll --> DivX.dll


    Audio:

    ACM 0x0002 Microsoft ADPCM CODEC Microsoft Corporation quartz.dll -->
    msadp32.acm
    ACM 0x0006 Microsoft CCITT G.711 A-Law and u-Law CODEC Microsoft
    Corporation quartz.dll --> msg711.acm
    ACM 0x0007 Microsoft CCITT G.711 A-Law and u-Law CODEC Microsoft
    Corporation quartz.dll --> msg711.acm
    ACM 0x0031 Microsoft GSM 6.10 Audio CODEC Microsoft
    Corporation quartz.dll --> msgsm32.acm
    ACM 0x0022 DSP Group TrueSpeech(TM) Software CODEC DSP GROUP,
    INC. quartz.dll --> tssoft32.acm
    ACM 0x0042 Microsoft G.723.1 CODEC Microsoft Corporation quartz.dll -->
    msg723.acm
    ACM 0x0160 Windows Media Audio Microsoft Corporation quartz.dll -->
    msaud32.acm
    ACM 0x0161 Windows Media Audio Microsoft Corporation quartz.dll -->
    msaud32.acm
    ACM 0x0130 Sipro Lab Telecom ACELP.net audio codec Sipro Lab Telecom
    Inc. quartz.dll --> sl_anet.acm
    ACM 0x0055 Fraunhofer IIS MPEG Layer-3 Codec (advanced) Fraunhofer
    Institut Integrierte Schaltungen IIS quartz.dll --> l3codeca.acm
    ACM 0x0402 Indeo® audio software Intel Corporation quartz.dll -->
    iac25_32.ax
    DMO 0x0160 WMAudio Decoder DMO Microsoft Corporation qasf.dll -->
    wmadmod.dll
    DMO 0x0162 WMAPro over S/PDIF DMO Microsoft Corporation qasf.dll -->
    wmadmod.dll
    DMO 0x000a WMSpeech Decoder DMO Microsoft Corporation qasf.dll -->
    wmspdmod.dll
    DSH 0x0001 Vorbis Encoder Copyright (C) 2002 Tobias Waldvogel OggDS.DLL
    DSH 0x0001 AC3Filter Copyright © 2002-2004 by Alexander
    Vigovsky ac3filter.cpl
    DSH 0x0001 ffdshow Audio Decoder Copyright © 2002-2004 Milan
    Cutka ffdshow.ax
    DSH 0x0050 MPEG Audio Decoder quartz.dll
    DSH 0x0055 MPEG Layer-3 Decoder Fraunhofer Institut Integrierte
    Schaltungen IIS l3codecx.ax
    DSH 0x0161 Windows Media Audio Decoder Microsoft
    Corporation msadds32.ax
    DSH 0x0130 ACELP.net Sipro Lab Audio Decoder Sipro Lab Telecom
    Inc. acelpdec.ax
    DSH CoreVorbis Audio Decoder - CoreVorbis.ax
    DSH 0x00ff CoreAAC Audio Decoder see the about box :p CoreAAC.ax
    DSH FLAC Decode Filter dsfFLACDecoder.dll
    DSH Speex Decode Filter dsfSpeexDecoder.dll
    DSH Vorbis Decode Filter dsfVorbisDecoder.dll
    DSH Vorbis Decoder Copyright (C) 2002 Tobias Waldvogel OggDS.DLL
    DSH 0x0050 MainConcept MPEG Audio Decoder MainConcept AG mcdsmpeg.ax
    DSH CoreFLAC Audio Decoder - CoreFLACDecoder.ax
     
    tmuldoon, May 24, 2006
    #1
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  2. tmuldoon

    Ken Maltby Guest

    Hello,

    I have several .avi that I convert to mpeg2s, the put them through DVD
    Architect to create DVDs.

    Now when I play the .avi - the audio and video are in sync. When I
    convert them to mpeg2 - SOME are not.

    At the beginning the mpegs are fine...but as they progress the video
    seems to creep ahead of the video. In some cases it gets to about 15
    seconds ahead making watching it useless.

    I have no idea what the cause is.

    Is there some standard update to all video and audio codecs I should be
    installing periodically to ensure my video and audio are in sync?

    Any other suggestions?

    MainConcept Mpeg Encoder
    Tools - DVD Architect 2.0
    Gspot Decoder

    Thanks,

    Tmuld

    It's not likely that your video and audio being out of sync
    is caused by the separate codec involved. There are two
    places where your audio and video sync is being established
    during the processing you describe. First as the MPEG is
    being encoded, then as the audio stream(s) and the video
    stream are muxed during the authoring process.

    During the MPEG encoding there is sometimes a slight
    difference in the frame rate between the source and the
    MPEG being created. Another common cause of loss
    of sync over time is the result of dropped frames during
    the avi capture. (Frame serving to the MPEG Encoder
    can sometimes eliminate this problem.) The avi will play
    fine, due to the built-in correction in the PC playing
    software, but the encoder will often have to encode it as
    it sees it.

    www.VideoReDo.com has a Quickfix tool that can redo
    the timing data in the MPEG, this may be all the correction
    you need. If the Authoring process were where the loss of
    sync occurred the reapplied sync data will usually correct
    the problem, as well.

    If the timing data of the MPEG were off because the avi
    were corrupted such that the keyframe data changed the
    actual size of the audio and/or video frames ( as relates to
    the time to play each one) then the MPEG encoder would
    have seen the changing sync as valid and the sync data in
    the MPEG would appear correct to Quickfix. To fix that,
    VRD has another tool that lets you adjust the sync manually.

    Try using the free trial to correct your MPEG.

    Luck;
    Ken
     
    Ken Maltby, May 24, 2006
    #2
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