Modern operating systems treat audio input as a privacy-sensitive resource, and the default state is often denied. Loopback Audio Confusion Advanced users sometimes attempt to record system sound by selecting a "loopback" or "what U hear" option.
Why Your Screen Recording Sound Is Missing and How to Fix It
Conversely, if the level is too high, it can cause clipping, resulting in a distorted mess that is difficult to listen to or may trigger automatic gain controls that mute the track entirely. If the player lacks the necessary decoder, it may refuse to play the audio track, skipping it silently while displaying the video.
Ensure that the toggle for your specific recording application is enabled. If the slider is too low, the signal might be recorded but lost in the background noise floor.
Why Screen Recording Sound Is Missing and How to Fix It
If the system microphone access is blocked at this level, the recording software is effectively deaf. If the system volume is muted or the application volume is turned down to zero, the recording software will capture an empty audio channel, leaving you with video but no sound.
More About Why is my screen recording not playing sound
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