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video and sound out of sync

Discussion in 'Tech Talk' started by BSA70, Mar 6, 2014.

  1. BSA70

    BSA70

    1,787
    118
    Aug 14, 2007
    NC
    My video and audio does not match in my pc when playing youtube and netflix. I know it is in the computer because I can have another computer beside it and it is fine. This is a dell 4700, 1 gig, an upgraded video/sound card. The hardware should not be the issue.

    Any idea what may be going on?

    thanks brian n nc
     
  2. Pierre!

    Pierre! NRA Life Member

    3,971
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    Jun 20, 2003
    Lovin Sparks Nv!

  3. BSA70

    BSA70

    1,787
    118
    Aug 14, 2007
    NC
  4. For Netflix, make sure Silverlight (from Microsoft) is up to date if they are still using Silverlight.

    Make sure to update your web browser to the latest version. Also check and disable browser plugins, its possible a poorly coded plugin is interfering with video streaming. Also try a different web browser to see if the problem persists.

    Ensure the video drivers for your PC are updated to the manufacturer's latest drivers. Download/update the drivers from the manufacturer's website (ATI, Nvidia, Intel) not from Microsoft or from Dell's website.

    When streaming video check the memory and processor program usage via the Task Manager's Process tab to see if there are other programs sucking up RAM or using the processor.

    Also scan your PC with Malwarebytes and a good AV scanner like ESET to ensure you don't have any malware on the PC. Sometimes out of sync video/audio is possible sign of an infected PC.
     
    Last edited: Mar 7, 2014
  5. JimmyN

    JimmyN

    1,266
    7
    Sep 29, 2006
    Virginia
    Which one is lagging behind, audio or video?
     
  6. BSA70

    BSA70

    1,787
    118
    Aug 14, 2007
    NC
    The video is lagging.

    Thanks
     
  7. JimmyN

    JimmyN

    1,266
    7
    Sep 29, 2006
    Virginia
    A few things to observe:
    Does the video lag if you switch to a lower resolution?
    If you pause it does the video "catch up" and play OK when you first start it playing again?
    Does it lag if you play it in a window rather than full screen?

    Netflix uses Silverlight, but Youtube can be Flash, H.264, HTML5, or WebM depending on the browser and whether you are watching the video in HD.
    Use this link to make sure your browser supports all the Youtube formats.
    https://www.youtube.com/html5 You should see at least 'HTMLVideoElement' (HTML5), H.264, and MediaSourceExtensions (Flash) listed.

    Let's also check some other stuff to see what's current and their settings.
    Assuming Windows7;
    We'll look at DirectX first to check the version and see if it reports any problems with the install. Click on the Start Menu button. In the search box type in dxdiag and press Enter See which version of DirectX you're using. Click on the Display tab to see if it shows any problems (look in the Notes section) and check the Sound tab as well, just in case.

    Check Silverlight next. You need to have at least version 5.1.x as prior versions have a vulnerability and can be a malware/virus entrance. If you don't have 5.1 you should update it for security reasons.
    Click on the Start Menu button and in the search box type Silverlight and press Enter.
    The About tab will show the version. Click on the Application Storage tab and you should have a 1MB quota for Netflix temporary storage. Click the Playback tab and try turning hardware acceleration on, if it's off, or turn it off if it's on. Then try Netflix to see if it makes a difference. If it does then you'll want to turn off, or on, hardware acceleration for the system and that should fix Youtube as well. You'll need to go to your graphics adapter settings to do that.

    Just some things to try first, video lagging can be hard to track down so like a doctor we need to do some poking and prodding to find the sore spot.:supergrin: