Article ID : 00198376 / Last Modified : 04/01/2020

The audio and video are out of sync

    There are a number of circumstances that can cause the audio and video to be out of sync.

    • If watching a TV programme, it could be due to the broadcast or a bad connection between your cable/satellite set-top box (if applicable).
    • If a DVD or Blu-ray Disc player is connected, a poor cable connection or a problem with the disc could be the cause.
    • When connected to a home theater system with a digital optical cable, then there may be an audio delay that requires a manual adjustment on the home theater system. There may even be a setting on the TV causing this issue.

    NOTE: If the TV is connected to a Sound Bar or home theater system (with an HDMI cable or optical cable), then the following may occur.
    The sound may be delayed due to audio processing delays in the Sound Bar or home theater system. In such cases, there are no issues with the TV speakers.

    As each of the steps below represents a possible solution to this issue, please check if the issue is resolved after completing each step.

    1. Make sure that the TV has the latest system software (firmware) installed.

      NOTES:
      • Not all TVs have software that can be updated. To see if your TV can be updated, check the TV specifications. 
      • If the TV is connected to a high-speed Internet connection, a software update can be downloaded from the menu of the TV. 
    2. If watching a TV programme, try changing the channel to see if the problem occurs on other channels; if it only occurs on one channel, then the issue is with the broadcast.

      NOTE: If the issue only occurs on one channel, please contact the broadcast network provider.

    3. Make sure all cables are securely connected to the TV and the source device (set-top box, DVD player, BD player, home theater system, or game console).

    4. Try playing a different video source to determine if the issue occurs with other connected devices.

    5. If your TV has a Game Mode setting, please try one of the following:

      • Set the Game Mode to Off when watching TV or playing a DVD or BD.
      • Set the Game Mode to On when playing a video game.
    6. If the issue is happening when using TV speakers, perform a power reset on the TV. For Android TVs, please refer to How to restart (reset) an Android TV?

    7. If there is a home theater system and a digital optical cable is used in the connection, manually change the Audio/Video Sync or Audio Delay setting on the home theater system (if available).

      NOTES:
      • Audio delay adjustments usually range from 0 ms to approximately 250 ms.
      • For information about the availability of A/V sync or Audio Delay setting, please refer to the operating instructions supplied with the product. 
      • For a third-party home theater system, check the instruction manual or contact the manufacturer for information on how to adjust the A/V sync setting.
    8. If all of the following conditions are met, try changing the Digital audio outA/V sync, and Pass through mode settings.

      • Your TV is an Android TV model.
      • You are connecting an audio system such as a Sound Bar, receiver, or home theater system to the HDMI IN (ARC) or HDMI IN (eARC/ARC) port of the TV.

      Set Digital audio out to PCM

      1. Press the HOME button on the TV remote control.
      2. Select  Settings.
      3. The next steps will depend on your TV menu options:
        • Select Display & Sound — Audio output — Digital audio out — PCM.
        • Select Bravia Settings — Digital audio out — PCM.
        • Select Sound — Digital audio out — PCM.
       

      Try changing the A/V sync setting to Auto or On.
      NOTE: Not all Android TVs have A/V sync setting. Check your manual for model-specific information. Manuals are posted on your model support page.

      1. Press the HOME button on the TV remote control.
      2. Select  Settings.
      3. The next steps will depend on your TV menu options:
        • Select Display & Sound — Audio output — A/V sync — Auto or On.
        • Select Sound — A/V sync — Auto or On.
       

      Set Pass through mode to Auto.

      NOTES:

      • Not all Android TVs have the Pass through mode setting. Check your manual for model-specific information. Manuals are posted on your model support page.
      • The System sounds, the Google Assistant, TalkBack, and Screen reader are not output while playing content with the Pass through mode setting active.
      1. Press the HOME button on the TV remote control.
      2. Select  Settings.
      3. Select Display & Sound — Audio output — Pass through mode — Auto.

      If you are setting TalkBack to On, set it to Off.

      1. Press the HOME button on the TV remote control.
      2. Select  Settings.
      3. Select Device Preference — Accessibility — TalkBack — Off.

    If the issue is still unresolved, service may be required.