A/V Sync problem.

[Silvereyes]

I've got a rather strange A/V sync problem when using AviSynth to open an XviD/VBR MP3 encoded file for processing.

The file plays ok when used directly in winamp, mediaplayer 9 or powerdvd but has a consistent video lag of approximately 0.95 seconds when opened using either AviSource OR DirectShowSource. EnsureVBRMP3Sync has no effect nor does demultiplexing or decoding the audio.


Software Versions:-

VirtualDub 1.6.11 (build 23774/release)
AviSynth 2.56, build:Oct 28 2005 [18:44:09]
XviD 1.1.0-beta2, Apr 4 2005
Fraunhofer IIS MPEG Layer-3 Codec (professional) 3.3.2 [build 44]


Any assistance would be much appreciated...

[Platin]

I don't know what's wrong but the simple workaround for your problem would to load the video and audio separately and then delay the audio for 0.95 seconds.
You probably already tried this... ?

[Manao]

Load the video using DirectShowSource, instead of using AviSource

[stax76]

You can also try open it with VirtualDubMod, extract audio as wav and then use AudioDub(AVISource,WAVSource)

[Manao]

Somehow, perl's motto could become avisynth's : "there's more than one (clean) way to do it" :p

[Mr_Odwin]

I had some audio video sync problems recently and using besliced to fix the audio did the trick.