What to do if there is no sound in the air.

  

The solution for playing the sound without image is as follows:

The reason for this phenomenon may be because the required decoder or graphics driver is not installed. The program needs to be updated, check the graphics card type steps: right click on the desktop blank and select Properties - Settings - Advanced - Adapter to check the graphics card type. More reading reference "Why did Baidu video sound have no sound when playing"

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