Look at the example image taken from YouTube

When I watch video file or listen to audio file, there is always a horizontal like which shows how much video/audio has been cached as well as my current location in video/audio.

What is this line called in plain English?

3 Answers

You are only going to get opinions with your question. There is no 'set' word, it's just how different people know it / refer to it.

Personally, a progress bar or timeline. I assume timeline would be more accurate of the two.

You may want to ask as this is for English.

The most common term for it that I know of is seek bar, though some media players (like VLC) call it track slider.

In audio/video editing terminology, the word used for it is timeline. A few related terms include the playhead, which is the symbol that marks your current position on the timeline, and scrubbing, which refers to moving the playhead manually across the timeline.

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I have heard it called a "Buffering Bar" on many occasions.

Dave is right though in saying that it will vary from person to person.

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