Question

Who app slow fast slow motion video but music not position change

Answer 1

Here's a solution:

First extract the MP3 format from the video, then make the video faster/slower.

Atlast merge the MP3 file and the video.

You'll get what you want.

Answer 2

Answer:

I think you can do that in youtube also...

>>Click on a video

>> Click on settings

>>Go to playback speed

>>Select speed.

Explanation: