Welcome to Doom9's Forum, THE in-place to be for everyone interested in DVD conversion.

Before you start posting please read the forum rules. By posting to this forum you agree to abide by the rules.

 

Go Back   Doom9's Forum > Capturing and Editing Video > Capturing Video

Reply
 
Thread Tools Search this Thread Display Modes
Old 20th March 2003, 08:27   #1  |  Link
Kracker
Registered User
 
Join Date: Dec 2002
Posts: 2
VDub audio sync mod caused de-sync!

I started using the VirtualDubVCR that has both the Timer and the audio sync mod built in and I noticed that the mod caused de-sync instead! I followed all the instructions the author mentioned.

The de-sync would show up as a split second of the audio repating itself and skewing the audio from then on by that much eventually though the program would fix the audio, syncing it back up further down the line. This happens even when there was nothing going on in the background.

running XP with a ATI AIW 8500 on dual P3 1.25Ghz capturing on a seperate hard drive

I really only started using it because I needed a Timer and it was suggesting in the FAQ or Q&A in this forum. After I found out it was messing up my captures I wound up starting using VirtualDVR instead but it's a shame I can't seem to use VirtualVCR becuase it was easier and it didn't drop any frames.

Anyone have an explanation for this?
Kracker is offline   Reply With Quote
Old 20th March 2003, 10:42   #2  |  Link
BaronVlad
Jetzt nochmal auf Deutsch
 
BaronVlad's Avatar
 
Join Date: Oct 2001
Location: Berlin, Germany
Posts: 411
Welcome,

normally there should be no such thing with this version. Maybe you have bad (i.g. original XP) drivers for your sound device. I had this once, desync of half a second. I installed the audio drivers of the manufacturer of my sound device and the problem was gone...

Do you have desync with other progs ? Like normal VDub ? or VDub Mod ?
__________________
Hochachtungsvoll

BaronVlad

Deutsch >> Capture FAQ - Capture Guide
Englisch >> Capture FAQ - Capture Guide
BaronVlad is offline   Reply With Quote
Old 20th March 2003, 12:40   #3  |  Link
Didée
Registered User
 
Join Date: Apr 2002
Location: Germany
Posts: 5,389
Re: VDub audio sync mod caused de-sync!

Quote:
Originally posted by Kracker
The de-sync would show up as a split second of the audio repating itself and skewing the audio from then on by that
OMG, this I remember very well from when I started out with capturing. Those repeating fractions of audio - shudder! BRRR!!

For me, the problem was solved by adjusting PCI latency and some other PCI settings in the BIOS, along with George's PCI latency patch.
... BUT, I'm with AMD on a VIA-Board where that problem is known to maybe occur. Since you're driving Intel, it's a bit unusual. E.G. the latency patch is for VIA-boards only.

Oh, furthermore, DON'T put the audio-in into your AIW (or its breakout-box respectively?). Put it directly into your soundcard's line-in.

Honestly, in the beginning I had *major* capturing problems with my AIW 8500DV / Abit KR7A-133R combination. I fiddelt for weeks like crazy, and was about to be going mad.
But now, everything is running perfectly, smooth as silk.
But, I really fiddled so much, that I cannot recall everything I tried ...
__________________
- We´re at the beginning of the end of mankind´s childhood -

My little flickr gallery. (Yes indeed, I do have hobbies other than digital video!)
Didée is offline   Reply With Quote
Old 20th March 2003, 20:18   #4  |  Link
^^-+I4004+-^^
Banned
 
^^-+I4004+-^^'s Avatar
 
Join Date: Aug 2002
Location: Croatia [local name:Hrvatska]
Posts: 551
VD capture unreliability is a known issue on
wdm systems;i'm on intel mobo,bt8x8 and i have it on
w2k....i still didn't find a wdm prog to keep the sync...

after all,VDub is a vfw prog,and introducing
the wrapper and all....well no wonder
it has problems....

if you're on NTFS,try pure wdm
prog's(as i can't recommend wdm progs on
FAT32...they don't split avi correct) ,and if you're on
FAT32
make dual boot....
(or do it all over...)
VDub splits the files(to overcome
2/4Gb barrier..) on
vfw and FAT2 like a charm...
^^-+I4004+-^^ is offline   Reply With Quote
Old 21st March 2003, 03:46   #5  |  Link
Kracker
Registered User
 
Join Date: Dec 2002
Posts: 2
audio capture seems normal with regular VDub. I found it crazy how a mod that was supposed to improve audio-snyc wound up causing de-sync instead.

I am using the sound-card's line-in. Using a Hercules Muse XL. As far as know I have the latest drivers.

Thanks for your input and anybody else who has suggestions/knowledge.
Kracker is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 06:30.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.