DGIndex + Audio

[Delta2]

Hi,

I use DGIndex + Avisynth + AutoCrop to make a good quality AVI

But I have audio sync problems. The source DVD Audio is a AC3. I don't know how to correct this.

What is the best way ? how do I configure VirtualDub to sync audio automatically ?

Interleaved audio per frame or per milliseconds ? preload audio or not ? convert AC3 to WAV or use NIC AUDIO plugin and load AC3 directly on Avisynth ?

And what about DTS audio ? DGIndex can decode this type to WAV ?

thanks for your help

[Guest]

What is the best way ? Please see forum rule 12.

Demux the AC3 in DGIndex. Then dub it with the video in your AVS script using NicAudio. Get the delay value from the fielname of the AC3 file. Then input that in VirtualDub's Audio/Interleaving/Audio skew correction edit box.

DGIndex can demux DTS but not convert it to WAV.

[mgh]

I use following script with vobs and mpgs from vcds for automatic audio delay correction

loadplugin("path\DGDecode.dll")
mpeg2source("__vid__")
aud="__aud__"
a=rightstr(aud,3)
b=rightstr(aud,10)
c=leftstr(b,4)
d=value(c)
e=d/1000
a=="ac3" ?audiodub(last,nicac3source(aud,2)).delayaudio(e):NOP
a=="mpa" ?audiodub(last,nicmpasource(aud)).delayaudio(e):NOP

[Delta2]

I can't sync audio :(

I rip a DVD in IFO mode with DVD Decrypter. The result is a huge VOB file :

VTS_01_PGC_01_1.VOB

then I execute this batch command (DGIndex) :

DGIndex -IA=2 -FO=2 -OM=1 -AIF=[C:\VTS_01_PGC_01_1.VOB] -OF=[C:\movie] -exit

the resulting files :

movie T01 3_2ch 384Kbps DELAY -16ms.ac3
movie.d2v

my AVS script is like this :

LoadPlugin("C:\PLUGINS\dgmpeg\DGDecode.dll")
LoadPlugin("C:\PLUGINS\Audio\NicAudio.dll")
LoadPlugin("C:\PLUGINS\DVDAuthor\AutoCrop.dll")
video=mpeg2source("C:\movie.d2v")
audio=nicac3source("C:\movie T01 3_2ch 384Kbps DELAY -16ms.ac3",2)
AudioDub(audio,video)
Autocrop(mode=0,wMultOf=16,hMultOf=16)
LanczosResize(640,272)

My virtualJob is like this :

VirtualDub.Open("C:\\script.avs");
VirtualDub.audio.SetSource(1);
VirtualDub.audio.SetMode(1);
VirtualDub.audio.SetInterleave(1,0,1,0,-16);
VirtualDub.audio.SetClipMode(1,1);
VirtualDub.audio.SetConversion(0,0,0,0,0);
VirtualDub.audio.SetVolume();
VirtualDub.audio.SetCompression(85,48000,2,0,16000,1,12,"AQACAAAAgAEBAHEF");
VirtualDub.audio.EnableFilterGraph(0);
VirtualDub.video.SetInputFormat(0);
VirtualDub.video.SetOutputFormat(7);
VirtualDub.video.SetMode(1);
VirtualDub.video.SetFrameRate(-1,1);
VirtualDub.video.SetIVTC(0,0,-1,0);
VirtualDub.video.SetCompression(0x64697678,0,10000,0);
VirtualDub.video.SetCompData(3028,"AAAAAKACAAA04ggAXHZpZGVvLnBhc3MALgBwAGEAcwBzAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABAAAAkAEAAEFTIEAgTDUAIABMADUAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADQAAAAAAAAAIERITFRcZGxESExUXGRscFBUWFxgaHB4VFhcYGhweIBYXGBocHiAjFxgaHB4gIyYZGhweICMmKRscHiAjJiktEBESExQVFhcREhMUFRYXGBITFBUWFxgZExQVFhcYGhsUFRYXGRobHBUWFxgaGxweFhcYGhscHh8XGBkbHB4fIQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEAAAACAAAAlgAAAGQAAAABAAAAAQAAAAAAAAAEAAAAAwAAAAEAAAABAAAAAAAAAAEAAAAAAAAAAAAAAAAAAABkAAAA9AEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAAAAZAAAAGQAAAABAAAACgAAAAEAAAAUAAAAAAAAAAAAAAAFAAAABQAAAAUAAAAAAAAAAQAAAAAoCgAAAAAAAQAAAAEAAAAeAAAAAAAAAAIAAAAAAAAAAAAAAIAAAACXSQEABgAAAAEAAAAAAAAAAQAAAAAAAAAAAAAALAEAAAAAAAABAAAAHwAAAAEAAAAfAAAAAQAAAB8AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEAAAAAAAAA9wAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAAAA==");
VirtualDub.video.filters.Clear();
VirtualDub.audio.filters.Clear();
VirtualDub.SaveAVI("c:\\filme_teste_2.avi");
VirtualDub.Close();


If load the AVS SCript in VirtualDub all is OK...but when I encode to AVI...the audio is out of sync

I tried everything....

Like neuron2 said, I include the delay on virtualdub job :

VirtualDub.audio.SetInterleave(1,0,1,0,-16);

I'm stuck with this :(

What's wrong ?

[mgh]

try using virtualdubmod if you are not using it. it is supposed to be better at audio-video sync

[Guest]

If the sync offset is the same throughout, then just try different values for skew correction until it is correct.

[Delta2]

Finally I solved the audio sync problems, here what I did :

- RIP the DVD in a large VOB
- Demuxed files using ProjectX, this tool syncs automatically audio and video offsets, I don't need to care about delays
- Create the D2V with DGIndex
- Transcode Audio to MP3 using Besweet
- last but not least, I cached audio to VirtualDub to avoid more audio sync problems, and set mode=0 (direct stream copy). This is possible with AviSynth plugin MPASource WarpEnterprises from

http://www.avisynth.org/warpenterprises/