Youtube – How exactly YouTube make videos 2x speed

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I think that it's possible for every 2 frames, only 1 frame is played and the second frame is ignored, therefore cost half the data, is that correct?

Best Answer

Very basically, it's not true what you're saying.

If you want to keep the video smooth and good looking you'll have to shorten the time you display each frame, which can lead to some frames neglected - but not every second one.

If you don't want to give up any frame, you can enlarge the FPS and by that have more frames in a each second.

Note: What you say can be achieved on server side, and would probably lead to less data transported. But it's not how YouTube works (cause they don't remove every one of two frames).

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