sound not matching video

bbxrider · Post by **bbxrider** » Mon Feb 04, 2008 8:08 am

i used ulead 8 to create ntsc dvd from 2 avi files that comprised a movie.
then used dvdshrink/nero to burn the .vob files to dvd.
on the first video the audio goes out of sync with the video about 3/4 the way through, the audio is about 1 minute behind the video
the avi's play fine on my pc, audio and video in sync throughout.
any way to tell if my problem was from the ulead, or dvd shrink, or nero?

Post by **Ken Berry** » Mon Feb 04, 2008 9:19 am

We need a lot more information. Please read the top sticky post on this Board which says "Please read this before posting" -- http://phpbb.ulead.com.tw/EN/viewtopic. ... 1454#41454 . Then come back with the information and someone may be able to help.

At the very least we need to know the exact properties of the .avi clips. Unfortunately, there is a wide variety of video formats out there which happen to use .avi as their extension for convenience. In other words, it is merely a carrier format. There is 'true' or uncompressed .avi which is huge -- 65 GB per hour of video. Then there is DV/AVI from a mini DV video camera -- still very large at 13 GB per hour. At the other end of the scale are highly compressed mpeg-4 formats such as DivX and XVid which also use the extension.

So right click on your .avi within Video Studio (either on the timeline or in the Library pane) and copy down ALL its properties here please. That will at least be a start... Note that you have to right click within VS. Doing so just using My Computer/Windows Explorer will not give you all the properties.

I suspect that your AVIs are in reality DivX, which happens to use the .avi extension. This is most likely the source of your problems, rather than the various programs, since DivX is notoriously hard to edit. It is meant for viewing, not editing.

You should probably first use a conversion program like the freeware SUPER from www.erightsoft.com/SUPER.html to convert the files to DVD compatible mpeg-2. Then test the files in a software player to see if there is any out of sync problem. If not, then you can burn the mpeg-2s to DVD.

Black Lab · Post by **Black Lab** » Mon Feb 04, 2008 2:30 pm

Also, v8 was notorious for out of sync audio. Unchecking SmartRender fixed this in some instances.

bbxrider · Post by **bbxrider** » Mon Feb 04, 2008 8:30 pm

thanks for your help, here is the avi property info

so if one knows enough about avi properties, then its possible to tell if they would convert ok? using ulead? or should i assume all avi's are not good candidates for conversion by ulead?

i will try converting with super to the mpeg-2, do you have any recomendations for programs that can burn the mpeg-2 to ntsc dvd?
bob

Post by **Ken Berry** » Mon Feb 04, 2008 8:46 pm

Ah! XVid. That is the open source version of DivX, and so, as I expected! Highly compressed and difficult to edit. Can we assume you have the XVid codec on your computer? Google for small freeware programs Sherlock or GSpot which will find all the audio and video codecs on your computer. That will tell you if you have XVid. You might, for instance, have the DivX codec which is not identical to the XVid one and it is interpreting the original file in a slightly wrong way, and this gets magnified as the video progress.

The frame size for your original file also seems a bit strange to me, and the audio 'Unknown ACM format' also a potential source of problems...

As for burning a DVD, the burning module in VS is perfectly adequate, as is Movie Factory or Nero or a variety of other programs.