My apologies for asking this question, given the number of times audio sync issues seems to be raised in this forum, however despite searching the forum can't find a clear answer to my question.
By way of background, I capture analog video using a anolog to digital converter as an AVI file and get it onto my computer. I then edit that AVI file by cutting out unnecessary scenes etc, before adding slide transition effects and then "sharing" that AVI file into a MPG2 file following the recommended procedure guide.
The MPG file thats created however has audio-video sync issues at times by about 2 seconds - but not consistantly between scenes. My question is, are audio/video sync issues created by adding slide transitions within the AVI file - eg by putting a slide transition of 2 secs, will that in any way cause a sync issue, and will multiple slide transition effects accentuate the problem.
As I mentioned I do follow the recommended procedure, and has set an Video Kbps of 6000, given that 8000 seems to create too big a mpg file to then burn onto a DVD.
Thanks in advance.
Brett
Another Video-Audio out of sync issue
Moderator: Ken Berry
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jchunter
Brett,
First question: what Video Studio version are you using. The only one that ever caused me A/V sync (known as OOS (Out Of Sync)) problems was version 8. 9.0 has been clean as a whistle.
Next question: When is OOS first noticed? Project Playback?, video file? played by what?, DVD?
Inserting slides in sequence with video clips has never caused OOS problems with me. In fact, I usually adjust the duration of my still potos to change on the beat of the music, so any OOS problem would be immediately obvious. However, I don't use transitions between slides. I only use simple cuts. (Viewers sometimes get tired of transitions...)
If you suspect the transitions, you could SaveAs your project to a different name, remove the transitions, create a video file and see if the OOS problem goes away... If it doesn't, you still have your original project intact.
First question: what Video Studio version are you using. The only one that ever caused me A/V sync (known as OOS (Out Of Sync)) problems was version 8. 9.0 has been clean as a whistle.
Next question: When is OOS first noticed? Project Playback?, video file? played by what?, DVD?
Inserting slides in sequence with video clips has never caused OOS problems with me. In fact, I usually adjust the duration of my still potos to change on the beat of the music, so any OOS problem would be immediately obvious. However, I don't use transitions between slides. I only use simple cuts. (Viewers sometimes get tired of transitions...)
If you suspect the transitions, you could SaveAs your project to a different name, remove the transitions, create a video file and see if the OOS problem goes away... If it doesn't, you still have your original project intact.
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zimmebr
Version 9 full versionjchunter wrote:Brett,
First question: what Video Studio version are you using.
post rendering when played as a mpgjchunter wrote: Next question: When is OOS first noticed? Project Playback?, video file? played by what?, DVD?
Will give this a go tonight. Thanksjchunter wrote: If you suspect the transitions, you could SaveAs your project to a different name, remove the transitions, create a video file and see if the OOS problem goes away... If it doesn't, you still have your original project intact.
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jchunter
Brett,
Another thing to try: Uncheck "Use Smart Render" when you create your video file in the original project. This takes more time but recreates the whole file. Sometimes this can repair minor problems in the source clips.
Edit: Cancel this suggestion - I just noticed that you captured as AVI(DV), so Smart Render doesn't apply when you create an Mpeg2 video file.
Another thing to try: Uncheck "Use Smart Render" when you create your video file in the original project. This takes more time but recreates the whole file. Sometimes this can repair minor problems in the source clips.
Edit: Cancel this suggestion - I just noticed that you captured as AVI(DV), so Smart Render doesn't apply when you create an Mpeg2 video file.
Last edited by jchunter on Tue Feb 28, 2006 3:42 pm, edited 1 time in total.
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sjj1805
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zimmebr
Firstly please complete your system details on your profile page to help us help you.
What is the source of the files, I know you said you are using a anologue to digital converter, but are you converting VHS tapes?
When I converted mine a couple of years ago I found that some of the old and worn tapes would produce synch errors whilst others did not despite identicial settings and capture methods.
Building on what jchunter has said, When I experienced out of synch problems I would look at various parts of the finished video and try and narrow down the offending spot(s). I could then tackle the problem accordingly either by removing a transition (if that were the cause) or by cutting out a small bad section of recording (If the VHS tape appeared to be the cause).
Only if all else fails and you have no other choice I have provided a method to get the audio more or less back in synch so that the video is again watchable
http://phpbb.ulead.com.tw/EN/viewtopic.php?t=11524
Steve J
Firstly please complete your system details on your profile page to help us help you.
What is the source of the files, I know you said you are using a anologue to digital converter, but are you converting VHS tapes?
When I converted mine a couple of years ago I found that some of the old and worn tapes would produce synch errors whilst others did not despite identicial settings and capture methods.
Building on what jchunter has said, When I experienced out of synch problems I would look at various parts of the finished video and try and narrow down the offending spot(s). I could then tackle the problem accordingly either by removing a transition (if that were the cause) or by cutting out a small bad section of recording (If the VHS tape appeared to be the cause).
Only if all else fails and you have no other choice I have provided a method to get the audio more or less back in synch so that the video is again watchable
http://phpbb.ulead.com.tw/EN/viewtopic.php?t=11524
Steve J