View Full Version : Audio Compression/Out-Of Sync

26th July 2007, 18:40
Dear Readers,

Not too sure where to put this... But it has to do with Extracting Audio... And I wasn't sure which category it fit under, so I put it here..

Anyway... In regards to extracting audio via VirtualDubMod... I receive this message:

'VirtualDub has detected an improper VBR audio encoding in the source AVI file (audio stream1).
The current preference is to rewrite the audio header with standard CBR values during processing for better compatibility. This may introduce up to 2118 ms of skew fromt he video stream. If this is unacceptable, decompress the *entire* audio stream to an uncompressed WAV file and recompress with a constant bitrate encoder. (bitrate: 147.9 +- 29.4 kbps)

Do you still want to rewrite the header?'

So I extracted it uncompressed and tried playing just that with the Video (.avi rip/ can't find a .vob/.iso) and when playing it through normally it is off... BUT if you skip to ANYwhere on the video then it goes in-sync with the video... Unsure as to how to go about this so that you don't need to manually skip in the video to get it to sync.

If you need more info will be happy to provide it.

26th July 2007, 19:14

Your posting is unclear to me.

1) Is your original .AVI out of synch?

2) If so, what software and procedures did you use to create the .AVI?

3) Load the original .AVI into GSpot and post a screen capture back here

4) Does the source material (presumably a DVD) play properly/synchronized?

5) What do you mean by ".avi rip/ can't find a .vob/.iso"?

26th July 2007, 19:22
1.The original isn't out of sync is it just right.

2. The rip wasn't mind.. It was downloaded off a tracker and the user didn't post any real information in regards to the Video Specs

3. Here is the ScreenCap:
http://img50.imageshack.us/img50/6792/untitledtg7.th.jpg (http://img50.imageshack.us/my.php?image=untitledtg7.jpg)

4. Unsure what you mean on that... It isn't a DVD, was a TV-Rip as it has the Music Stations logo and whatnot.. And yeah that source was in sync.

5. The file is a .avi, and I couldn't find a better source, .vob/.iso to work off of, so I am working with the .avi rip from wherever/whoever they got it from.

26th July 2007, 19:32
forum rules... (http://forum.doom9.org/forum-rules.htm)


26th July 2007, 19:36
If you're still unclear on the scope of rule 6 at this point, then you can check the newbies announcement (http://forum.doom9.org/announcement.php?f=6), but you should know after a few months what's allowed and what isn't.