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Sony Vegas Lag Issues

by Sara Young
11 replies
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Does anyone know how to prevent or fix lags in Sony Vegas?

When I capture a video with my webcam, the video lags behind the audio and they are totally out of sync
#issues #lag #sony #vegas
  • Profile picture of the author Hamza
    Originally Posted by Sara Young View Post

    Does anyone know how to prevent or fix lags in Sony Vegas?

    When I capture a video with my webcam, the video lags behind the audio and they are totally out of sync
    It's easy,

    Once you drag the video into Vegas, select it and press "U" and this way you will ungroup the video and audio and you will have the ability to move and reposition the audio track wherever you want, which means that you can drag it forward or backward to sync with what's being said in the video

    Hopefully that helps
    Hamza
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  • Profile picture of the author Sara Young
    Thanks, but it's actually not that easy....

    As time goes on, the lag is greater and greater, so it's not just a matter of moving the audio forward a bit.
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    • Profile picture of the author ExRat
      Hi Sara,

      It sounds like the combination of your webcam/computer is causing the lag to be recorded. I have a lag issue while using my webcam and skype at times.

      Are you -

      a) keeping everything unnecessary off the c drive (where your operating system is) and keeping it on a different drive, preferably external?

      b) ensuring as few programs as possible are running while recording?

      c) disconnecting the internet while recording to ensure that antivirus etc is not updating etc?

      d) running a fast, powerful computer?

      I'm not the world's greatest expert on these things, but I had problems with dropped frames when capturing from a DV tape camera onto Vegas and these kind of measures solved that problem - you need your computer to be dedicated to video work while doing it, because it often needs all of the spare resources available (memory etc) and anything less causes issues.
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      Roger Davis
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    • Profile picture of the author magiclouie
      Originally Posted by Sara Young View Post

      Thanks, but it's actually not that easy....

      As time goes on, the lag is greater and greater, so it's not just a matter of moving the audio forward a bit.
      I assume you have joined the sony vegas forum and posted a thread like this.

      I am a fan of camtasia and it works well for me.
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      • Profile picture of the author Bill Farnham
        Hi Sara,

        As Roger alluded to, your system may be suffering from an overtaxed situation.

        One of the things to keep in mind is that all digital video consists of sequencial images pieced together to create the video. This means your computer needs the power to render complete images one after another in rapid fashion for you to be successful.

        Audio is nowhere near as intensive a resource hog as video is. So what you most likely experiencing is your audio being rendered ahead of the video portion.

        In absence of a more powerful CPU/GPU (chip/graphics card) you may try to render the video at a lower resolution. If you intend to use the video on the web you will need a lower resolution anyway in order to have the video play on a browser.

        Look for your render setting and see if you can render the video starting at around 35% quality and move up in increments of 5% until your quality matches your expectations, or you suffer lag.

        The ideal situation is to have a powerful enough computer and graphics card to get the job done correctly. But that costs money.

        ~Bill
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  • Profile picture of the author freeseotipstk
    Banned
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    • Profile picture of the author ExRat
      Originally Posted by freeseotipstk View Post

      As time goes on, the lag is greater and greater, so it's not just a matter of moving the audio forward a bit.
      Reported for spamming by copy/pasting post#3 for sig file exposure.
      Signature


      Roger Davis
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  • Profile picture of the author SuzanneH
    I'm no expert either, but I had that problem once and found that my microphone setting was off. (Edit: not turned off; setting was wrong.) Unfortunately, I can't remember exact details -- but you may want to experiment with different microphone settings. (In Windows, it's under Manage audio devices -- and then look for the Recording tab. Select your microphone and look at the properties for that microphone and choose a different format.)

    Edit: And by 'experiment', I mean make a few small recordings at different settings and see what happens. I could be very wrong, but my thinking is you may have to re-record your video.

    Suzanne
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  • Profile picture of the author huester
    Hi there. It sounds like your PC. Update as necessary and that means drivers aswell. I found my mic wasnt working correctly due to old drivers installed. Clean Clean and Clean your PC. I use ccleaner and malware bytes to rip it apart and build it back up. Your registry is most important aswell to keep fresh. It sounds to much but you will get the hang of it.
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  • Profile picture of the author Chris Cole
    Sara,

    you can separate the video from the audio track and then compress one of the two tracks independently. It might be a bit awkward to do, but you can split it each time it goes out of sync, then shift the audio to suit the video.

    Another option is to either speed up or slow the audio track/video. This way you can get both into sync. Split the two tracks from each other, then hold ctrl and click to the end of track, you will see a squiggly line appear. You can stretch or compress the track this way to suit.
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  • Profile picture of the author Sara Young
    Thanks everyone. It might be a problem with my computer, but I'm using a new laptop - one that was recommended to me for this kind of stuff. So I'm not sure...

    I'm thinking it has something to do with the bitrates, but I know nothing about this stuff, so here's what I did:

    1. I reencoded the video (using SUPER) to something more reasonable (changed video bitrate to around 2000) - this already made things better but not good enough

    2. Then I unlinked the audio and video in camtasia and made some changes to sync it all.

    I'm pretty sure that I went trough this a year ago when I had a similar problem and the solution was changing a setting in Sony Vegas. But I can't remember what it was...

    Anyway, thanks everyone. And the main thing is that my video is in sync now :-)
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  • Profile picture of the author John M Kane
    Might read this at Creative Cows...something else to check anywho.
    CreativeCOW
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