An audio synchronizer is a tool that makes sure that the sound in a video or movie matches up perfectly with what's happening on the screen. Think about when you watch a movie and you see someone talking, but their lips don't quite match up with what you're hearing. That can be really annoying! An audio synchronizer helps fix that problem.
Here's how it works: when someone makes a video, they record both the video and the audio separately. Then, they put the video and audio together so that they play at the same time. But sometimes, the audio and video don't match up perfectly. Maybe the video was slowed down or sped up a little bit, or maybe the audio was recorded at a different time and doesn't quite match up.
That's where the audio synchronizer comes in. It takes the audio and moves it forwards or backwards in time so that it lines up perfectly with the video. It's like a magic wand that fixes the problem and makes everything look and sound just right.
So, the next time you're watching a movie and the sound doesn't quite match up, just remember that there's a special tool called an audio synchronizer that can fix it!